14104-20-2

Basic information

• Product Name: Silver tetrafluoroborate
• Synonyms: Silver(I) tetrafluoroborate anhydrous, AgBF4;Silvertetrafluoroborate,99%;Silver tetrafluoroborate 99%;SLIVER TERTRAFLUOROBORATE;Silver tetrafluoroborate ,99% [55.6% Ag];Silver tetrafluoroborate/ 95+%;Silver tetrafluoroborate,Silver borofluoride;Silver tetrafluoroborate ,99% [55.4% Ag]
• CAS NO: 14104-20-2
• Molecular Formula: Ag*BF₄
• Molecular Weight: 194.67
• EINECS: 237-956-5
• Product Categories: Ag (Silver) Compounds;B (Classes of Boron Compounds);Classes of Metal Compounds;Tetrafluoroborates;Transition Metal Compounds;halometallate salts;Catalysis and Inorganic Chemistry;Chemical Synthesis;Materials Science;Metal and Ceramic Science;Salts;Silver;Silver Salts;Gold Catalysis;Silver Additives
• Mol File: 14104-20-2.mol
• Article Data: 15

Chemical Properties

• Melting Point: 70-73 °C(lit.)
• Appearance: White to pale brown/Crystalline Powder
• Storage Temp.: Store below +30°C.
• Water Solubility: SOLUBLE
• Sensitive: Hygroscopic
• CAS DataBase Reference: Silver tetrafluoroborate(CAS DataBase Reference)
• NIST Chemistry Reference: Silver tetrafluoroborate(14104-20-2)
• EPA Substance Registry System: Silver tetrafluoroborate(14104-20-2)

Safety Data

• Hazard Codes: C
• Statements: 34-22-20/21/22
• Safety Statements: 26-36/37/39-45-27
• RIDADR: UN 3260 8/PG 2
• WGK Germany: 3
• RTECS: ED2875000
• F: 3-8-10-21
• TSCA: T
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 14104-20-2(Hazardous Substances Data)

Usage

Chemical Properties

beige crystalline powder

Uses

Silver tetrafluoroborate finds applications as a useful reagent in inorganic, organic and organomettalic chemistry. It acts as a moderately strong oxidant in dichloromethane, replaces halide anions and ligands with weakly coordinating tetrafluoroborate anions, and behaves as a catalyst for cyclization reactions. It is a potent promoter for chemical glycosylation.

Application

Silver tetrafluoroborate is a transition metal salt extensively used in organic syntheses.Gold Catalysts — 21st Century ′Gold Rush′Displaces chloride from precious metal complexes used in the oxidation of alcohols by persulfate.Provides a silver-ion template for improved macrolatamization of a linear dipeptide.

General Description

Silver tetrafluoroborate (AgBF4) is used as a Lewis acid in organic synthesis. It is known to have a high affinity towards organic halides. It is employed in organic reactions like activation of acyl chlorides, nucleophilic substitution, rearrangement, cycloaddition, cyclization, ring expansion and oxidation.

Safety Profile

Poison by intravenous route. When heated to decomposition it emits toxic fumes of F-. Used for plating baths. See also SILVER COMPOUNDS, BORON COMPOUNDS, and FLUORIDES.

Synthesis

Preparation of silver tetrafluoroborate and MBDPThis reaction is completed with the lights off. In a 25 mL round-bottom flask covered with aluminum foil, AgBF4 (0.0397 g (0.20 mmol) is dissolved in 10 mL CH3CN. To the solution MBDP (0.0645 g, 0.20 mmol) is added and allowed to stir for 3 hours. The solution is concentrated under vacuum to approximately 3 mL then layered with Et2O. The flask is placed in the freezer. X-ray quality crystals are formed.

InChI:InChI=1/8Ag.4BFO2/c;;;;;;;;4*2-1(3)4/q8*+1;4*-2

Synthetic route

silver fluoride + trifluoroborane diethyl ether (109-63-7) → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In diethyl ether BF3*C2H5OC2H5 was aded to a suspn. of AgF in diethyl ether, stirred until a clear soln. was obtained; the solvent was removed in vac.;	89.7%
In not given

hydrogen fluoride (7664-39-3) + boron trifluoride (7637-07-2) + silver nitrate → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
solvation of AgNO3 in HF not above 0°C under stirring and introduction of BF3;; precipitation; washing with liquid HF and drying in a stream of N2 (12 hours), later in vacuum (12 hours);;	85%
In hydrogen fluoride react. mechanism discussed;;
In hydrogen fluoride HF (liquid); react. mechanism discussed;;
In hydrogen fluoride HF (liquid); High Pressure; in FEP vessel liquid HF was condensed onto AgNO3 at 77 K and warmed to room temp., BF3 was added for 12 h (2 bar); liquid phase was decanted, residue was dried by pumping for 3 h; X-ray powder diffraction;

boron trifluoride (7637-07-2) + xenon + silver fluoride + fluorine (7782-41-4) → silver tetrafluoroborate (14104-20-2) + xenon difluoride (13709-36-9)

Conditions	Yield
In hydrogen fluoride HF (liquid); treatment AgF with BF3 in HF, pptn. of AgBF4, adnn. of F2, removal of volatiles, addn. of Hf, BF3 and xenon (condensed in reactor, -100°C), warming to 20°C with stirring (thermal cycling repeated 3-4 times, in 2 h); removal of volatile (vac., -45°C, 5 h), XeF2 (U trap, -78°C); x-ray photography;	A n/a B 66%

silver(II) fluoride + boron trifluoride (7637-07-2) + xenon → silver tetrafluoroborate (14104-20-2) + xenon difluoride (13709-36-9)

Conditions	Yield
With HF In hydrogen fluoride HF (liquid); mixing of AgF2 and BF3 in HF (-100°C), warming(to room temp., stirring), addn. of xenon (stirring 12 h); removal of volatile (-45°C, vac.), XeF2 (U trap, -78°C); x-ray powder photography and Raman spectroscopy; novolatile AgBF4; x-ray powder photography;	A n/a B 57.9%

silver(l) oxide (20667-12-3) + tetrafluorohydroboric acid → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In water Ag2O reacted with 48% H2O-soln. of HBF4;

boron trioxide + sulfur tetrafluoride (7783-60-0) + silver fluoride → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In neat (no solvent) heating a mixture of AgF and B2O3 (molar ratio 2 : 1) with an excess of SF4 in a closed steel tube at 175°C;;

boron trioxide + silver fluoride → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In neat (no solvent) heating at 175°C;;
In neat (no solvent) heating at 175°C;;

boron trifluoride (7637-07-2) + silver(I) chloride → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In neat (no solvent) byproducts: Cl2; evaporation of an excess of BF3;;

boron trifluoride (7637-07-2) → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
With Ag borate
With Ag borate

hydrogen fluoride (7664-39-3) + boron trifluoride (7637-07-2) + silver (7440-22-4) → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In nitromethane addition of powdered Ag to a solution of HF and BF3 in CH3NO2;;

boron trifluoride (7637-07-2) + silver fluoride → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In neat (no solvent) evaporation of an excess of BF3;;
In ethylbenzene introduction of gaseous BF3 into a suspension of AgF in ethylbenzene;; not isolated;;
In toluene introduction of gaseous BF3 into a suspension of AgF in toluene and evaporation in vacuum;;

bromine trifluoride (7787-71-5) + silver fluoride → silver tetrafluoroborate (14104-20-2)

tetrafluoroboric acid + silver (7440-22-4) → silver tetrafluoroborate (14104-20-2)

tetrafluoroboric acid + silver(l) oxide (20667-12-3) → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In water 48 % HBF4 was added to Ag2O; MeOH was added, solvent was removed under vac., residue was washed with acetone;
In water	23.3 g

ammonium tetrafluroborate (13826-83-0) + silver nitrate → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In acetonitrile byproducts: NH4NO3; N2 atmosphere; pptn. of NH4NO3; filtn. (removal of pptd. NH4NO3), pptn. on cooling (liq. N2) and solvent evapn., separated salt dried (vac.), recrystd. by addn. of acetone/methanol to the salt soln. in acetonitrile; Ag anal.;	92.9 - 96.5

silver fluoride → silver tetrafluoroborate (14104-20-2)

silver(l) oxide (20667-12-3) → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
With boron trifluoride diethyl etherate In nitromethane byproducts: AgBO2; addition of 60 g boron fluoride etherate to a suspension of 51.5 g Ag2O in 100 ml CH3NO2 and boiling under stirring for 1.5 hours;; removing CH3NO2 in vacuum; drying in vacuum at 60°C over P2O5 and activated carbon;;

Ag(1+)*BF4(1-)*2C3H6=AgBF4*2C3H6 → silver tetrafluoroborate (14104-20-2) + propene (187737-37-7)

Conditions	Yield
In neat (no solvent) investigation of dissociation;;
In neat (no solvent) investigation of dissociation;;

2Ag(1+)*2BF4(1-)*3C4H6=2AgBF4*3C4H6 → silver tetrafluoroborate (14104-20-2) + buta-1,3-diene (106-99-0)

Conditions	Yield
In neat (no solvent) at 45°C in 72h;;

uranium pentafluoride (13775-07-0) + AgFBF4 → silver tetrafluoroborate (14104-20-2) + uranium hexafluoride (7783-81-5)

Conditions	Yield
In hydrogen fluoride HF (liquid); room temp.; detd. by IR spectroscopy and X-ray diffraction;

Ag(1+)*BF4(1-)*CH2CHC3H7=AgBF4*CH2CHC3H7 (26318-29-6) → silver tetrafluoroborate (14104-20-2) + Ag(1+)*BF4(1-)*2CH2CHC3H7=AgBF4*2CH2CHC3H7

Conditions	Yield
In neat (no solvent) decompn. at about -10°C;;

Ag(1+)*BF4(1-)*C6H5C4H4C6H5=AgBF4*C6H5C4H4C6H5 (26100-18-5) → silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In water partial decompn. in H2O;;

Ag(1+)*BF4(1-)*2C4H8=AgBF4*2C4H8 → silver tetrafluoroborate (14104-20-2) + isobutene (115-11-7)

Conditions	Yield
In neat (no solvent) investigation of dissociation;;
In neat (no solvent) investigation of dissociation;;

Ag(1+)*BF4(1-)*2C4H8=AgBF4*2C4H8 → 1-butylene (106-98-9) + silver tetrafluoroborate (14104-20-2)

Conditions	Yield
In neat (no solvent) investigation of dissociation;;
In neat (no solvent) investigation of dissociation;;

Ag(1+)*BF4(1-)*2C4H8=AgBF4*2C4H8 → silver tetrafluoroborate (14104-20-2) + (Z)-2-Butene (590-18-1)

Conditions	Yield
In neat (no solvent) investigation of dissociation;;
In neat (no solvent) investigation of dissociation;;

Ag(1+)*BF4(1-)*2C4H8=AgBF4*2C4H8 → silver tetrafluoroborate (14104-20-2) + trans-2-Butene (624-64-6)

Conditions	Yield
In neat (no solvent) investigation of dissociation;;
In neat (no solvent) investigation of dissociation;;

Ag(1+)*BF4(1-)*3C4H8=AgBF4*3C4H8 → silver tetrafluoroborate (14104-20-2) + (Z)-2-Butene (590-18-1)

Conditions	Yield
In neat (no solvent) investigation of dissociation;;
In neat (no solvent) investigation of dissociation;;

Ag(1+)*BF4(1-)*3C4H8=AgBF4*3C4H8 → silver tetrafluoroborate (14104-20-2) + isobutene (115-11-7)

Conditions	Yield
In neat (no solvent) investigation of dissociation;;
In neat (no solvent) investigation of dissociation;;

({(η-C5(CH3)5)2Fe2(CO)2(CS)2}Ag)BF4 → silver tetrafluoroborate (14104-20-2) + {(η-C5(CH3)5)Fe(CO)2(CS)}BF4

Conditions	Yield
In acetone dissociation on dissoln.;;
In dichloromethane dissociation on dissoln.;;

Ag([Au(μ-C(2),N(3)-1-benzylimidazolato)]3)2BF4*dichloromethane → silver tetrafluoroborate (14104-20-2) + tris{μ-(1-benzylimidazolato-N(3),C(2))}tri-gold(I)

Conditions	Yield
In dimethyl sulfoxide decompn.;

silver tetrafluoroborate (14104-20-2) + acetonitrile (75-05-8) + palladium dichloride → tetrakis(acetonitrile)palladium(II) tetrafluoroborate (21797-13-7)

Conditions	Yield
for 1.5h; Inert atmosphere;	100%
In acetonitrile byproducts: AgCl; N2-atmosphere; addn. of PdCl2 to 2 equiv. of AgBF4, stirring (45 min, pptn.); filtration off of AgCl, concn. (vac.), addn. of ether (pptn.), recrystn. (MeCN/ether); elem. anal.;	88%
for 2h; Inert atmosphere; Schlenk technique;

silver tetrafluoroborate (14104-20-2) + trans-{RhCl(CO)(DMPM)}2 (114445-93-1) → {Rh2(CO)2(μ-Cl)(DMPM)2}{BF4} (114446-02-5)

Conditions	Yield
In tetrahydrofuran byproducts: AgCl; stirring for 40 min; removal of solvent under vac., dissoln. in CH2Cl2, filtn. through Celite, redn. of vol. by a stream of N2, addn. of diethyl ether;	100%

silver tetrafluoroborate (14104-20-2) + bis(ethylene)rhodium(I) chloride dimer + bicyclo[2.2.1]hepta-2,5-diene (121-46-0) → di(norbornadiene)rhodium(I) tetrafluoroborate

Conditions	Yield
In dichloromethane under N2 or Ar, addn. of diene in CH2Cl2 to Rh-complex in CH2Cl2, then addn. of solid AgBF4, soln. is stirred for 45 min; filtn. through Celite, addn. of THF to the filtrate, concn., filtn. of deep red crystals, washed with THF, air-dried;	100%

silver tetrafluoroborate (14104-20-2) + trans-dichlorobis(ethyl diphenylphosphinoacetate)palladium(II) (64492-09-7) → {cis-Pd(Ph2PCH2C(O)OEt)2}(BF4)2 (113379-43-4)

Conditions	Yield
In dichloromethane 2 equiv. AgBF4; elem. anal.;	100%

silver tetrafluoroborate (14104-20-2) + [RuCl2(hexamethylbenzene)]2 + phenanthrene (85-01-8) + trifluoroacetic acid (76-05-1) → (η6-hexamethylbenzene)(η6-phenanthrene)ruthenium(II) bis(tetrafluoroborate)

Conditions	Yield
In acetone stirring at room temperature for 30 min, phenanthrene and trifluoroacetic acid were added to the filtrate, boiled under reflux for 2h, cooled; filtered, washed with ether; NMR, UV;	100%

silver tetrafluoroborate (14104-20-2) + iron(II) octaethyltetraazaporphyrin (169697-22-7) + benzyltrimethylammonium chloride (56-93-9) → chloroiron(III) 2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraazaporphyrinate (141045-99-0)

Conditions	Yield
In dichloromethane; toluene byproducts: Ag; inert atmosphere; addn. of AgBF4 to the Fe-complex in toluene; stirred for 30 min; filtration off of Ag (Celite), evapn. (vac.), dissoln. in CH2Cl2, addn. of PhCH2N(CH3)3Cl, stirring (15 min);; filtration (Celite), partial evapn. (vac.), crystn. (hexane/C6H6, slow evapn.);;	100%

silver tetrafluoroborate (14104-20-2) + iron(carbonyl)2(trimethylphosphine)2(methyl)I (33542-07-3) → {Fe(CH3)(CO)3(P(CH3)3)2}(1+)*BF4(1-)={Fe(CH3)(CO)3(P(CH3)3)2}BF4

Conditions	Yield
With carbon monoxide In dichloromethane; acetone under argon; stirred for 13 h at room temp.;; filtn.; dried;;	100%

silver tetrafluoroborate (14104-20-2) + [(((CH3)3C)3P)2Au](1+)*Cl(1-)=[(((CH3)3C)3P)2Au]Cl (159161-46-3) → bis(tri-t-butylphosphine)gold(I) tetrafluoroborate (168000-65-5)

Conditions	Yield
In ethanol byproducts: AgCl; N2 atm., protection agains light; 1 equiv. of AgBF4, room temp., stirring (30 min); filtn., evapn. (vac.), crystn. (CH2Cl2/Et2O, -30°C), drying (vac.); elem. anal.;	100%

dichloro(benzene)ruthenium(II) dimer (37366-09-9) + silver tetrafluoroborate (14104-20-2) + <23>(1,3,5)-cyclophane (27165-88-4) → (η6-benzene)(η6-[2(3)](1,3,5)cyclophane)ruthenium(II) bis(tetrafluoroborate) (101810-15-5)

Conditions

Yield

In acetone; trifluoroacetic acid byproducts: AgCl; a soln. of Ru2-compd. and AgBF4 in acetone was stirred at room temp. for 30 min; after removing AgCl by filtration (2(3))(1,3,5)cyclophane and CF3CO2H were added; the mixt. was boiled under reflux for 1 h; the mixt. was cooled to 0°C and dild. with ether; the ppt. was collected by filtration and washed with ether, then dissolved in CH3NO2 and reprecipitated by addn. of ether; elem. anal.;

100%

silver tetrafluoroborate (14104-20-2) + fac-IrH3(PMe2Ph)3 (12099-83-1, 92621-06-2) → [(fac-IrH3(PMe2Ph)3)2Ag]BF4

Conditions	Yield
In tetrahydrofuran	100%

silver tetrafluoroborate (14104-20-2) + [Pt(8-methylquinolinyl)Me2(2,2'-bipyridine)]Br → [Pt(8-methylquinolinyl)Me2(2,2'-bipyridine)]BF4

Conditions	Yield
In acetone byproducts: AgBr; addn. of stoich. amt. of AgBF4 to metal complex, stirring for 5 min; filtartion off of AgBr (Celite), vol. reduction, Et2O addn., cooling to -30°C overnight, collection (filtration), drying (vac.); elem. anal.;	100%

silver tetrafluoroborate (14104-20-2) + [Pd(Me)(1,3-dimethylimidazolin-2-ylidene)(μ-Cl)]2 + 1,5-dicyclooctadiene (5259-72-3, 10060-40-9, 111-78-4) → [Pd(Me)(1,3-dimethylimidazol-2-ylidene)(1,5-cyclooctadiene)]BF4

Conditions	Yield
In dichloromethane byproducts: AgCl; absence of air and moisture; addn. of 1 equiv. COD to Pd-complex soln. at -15°C, stirring for 10 min, addn. of equimolar amt. of AgBF4 soln. at -20°C, stirring (-20°C, 1 h); filtration (Celite), solvent removal (vac., -15 to -20°C); elem. anal.;	100%

silver tetrafluoroborate (14104-20-2) + di(rhodium)tetracarbonyl dichloride + 1,1′,2,2′-tetrakis(diphenylphosphino)-4,4′-di-tert-butylferrocene (403815-19-0) → Fe(C5H2C(CH3)3(P(C6H5)2)2)2Rh(CO)2(1+)*BF4(1-)=Fe(C5H2C(CH3)3(P(C6H5)2)2)2Rh(CO)2BF4 (403815-23-6)

Conditions	Yield
In methanol; toluene (Ar); addn. of a soln. of silver salt in methanol to a soln. of iron complex in toluene, addn. of a soln. of rhodium complex in toluene, stirring for 30 min; filtration, evapn.;	100%

silver tetrafluoroborate (14104-20-2) + 5-(4-pyridyl)-10,15,20-triphenylporphyrin + [(PdCl(C6H5SCH2)2C6H2OCH2)2C6H3CH2CN] (178438-03-4) → ((C4H2NHCC6H5)2(C4H2NCC6H5)(C4H2NCC5H4N))2C6H3(CH2OC6H2(CH2SC6H5)2Pd)2CH2CN(2+)*2BF4(1-)=[C136H99N11O2Pd2S4][BF4]2

Conditions	Yield
In nitromethane; dichloromethane; water stirring (5 min); solvent removal (vac.), dissolving in MeNO2 and evpn. to dryness (repeated twice), dissolving (MeNO2), filtn.;	100%

silver tetrafluoroborate (14104-20-2) + [(PdCl(C6H5SCH2)2C6H2OCH2)3C6H3] (178438-02-3) + ((C4H2NHCC6H5)2(C4H2NCC6H5)(C4H2NCC5H4N))2C6H3(CH2OC6H2(CH2SC6H5)2Pd)2CH2CN(2+)*2BF4(1-)=[C136H99N11O2Pd2S4][BF4]2 → C69H57O3Pd3S6(3+)*3C50H41NO2Pd2S4(2+)*6C43H29N5*9BF4(1-) = [(C69H57O3Pd3S6)(C50H41NO2Pd2S4)3(C43H29N5)6][BF4]9

Conditions	Yield
In nitromethane; dichloromethane; water stirring (5 min); solvent removal (vac.), dissolving in MeNO2 and evpn. to dryness (repeated twice), dissolving (MeNO2), filtn.;	100%

silver tetrafluoroborate (14104-20-2) + 5-(4-pyridyl)-10,15,20-triphenylporphyrin + [(PdCl(C6H5SCH2)2C6H2OCH2)3C6H3] (178438-02-3) → 3((C4H2NHCC6H5)2(C4H2NCC6H5)(C4H2NCC5H4N))*C6H3(CH2OC6H2(CH2SC6H5)2Pd)3(3+)*3BF4(1-)=[(C43H29N5)3(C69H57O3Pd3S6)][BF4]3

Conditions	Yield
In nitromethane; dichloromethane; water stirring (5 min); solvent removal (vac.), dissolving in MeNO2 and evpn. to dryness (repeated twice), dissolving (MeNO2), filtn.;	100%

silver tetrafluoroborate (14104-20-2) + ((C4H2NHCC6H5)2(C4H2NCC6H5)(C4H2NCC5H4N))2C6H3(CH2OC6H2(CH2SC6H5)2Pd)2CH2CN(2+)*2BF4(1-)=[C136H99N11O2Pd2S4][BF4]2 + C69H57O3Pd3S6(3+)*3C50H41NO2Cl2Pd2S4*3BF4(1-) = [(C69H57O3Pd3S6)(C50H41NO2Cl2Pd2S4)3][BF4]3 → C69H57O3Pd3S6(3+)*9C50H41NO2Pd2S4(2+)*12C43H29N5*21BF4(1-) = [(C69H57O3Pd3S6)(C50H41NO2Pd2S4)9(C43H29N5)12][BF4]21

Conditions	Yield
In nitromethane; dichloromethane; water stirring (5 min); solvent removal (vac.), dissolving in MeNO2 and evpn. to dryness (repeated twice), dissolving (MeNO2), filtn.;	100%

silver tetrafluoroborate (14104-20-2) + [(PdCl(C6H5SCH2)2C6H2OCH2)2C6H3CH2CN] (178438-03-4) + [(PdCl(C6H5SCH2)2C6H2OCH2)3C6H3] (178438-02-3) → 9Pd(2+)*C69H57O3S6(3-)*3C50H41NO2S4(2-)*6Cl(1-)*3BF4(1-)*CH3NO2=C219H180B3N3O9F12S18Cl6Pd9*CH3NO2

Conditions	Yield
In nitromethane; dichloromethane byproducts: AgCl; 3 equiv. of AgBF4, 3 equiv. of R-CN block, stirring (ratio CH2Cl2/CH3NO21/1); filtration (over hyflo), chromatography (SiO2, CH3NO2);	100%

silver tetrafluoroborate (14104-20-2) + [(PdCl(C6H5SCH2)2C6H2OCH2)2C6H3CH2CN] (178438-03-4) + 9Pd(2+)*C69H57O3S6(3-)*3C50H41NO2S4(2-)*6Cl(1-)*3BF4(1-)*CH3NO2=C219H180B3N3O9F12S18Cl6Pd9*CH3NO2 → 21Pd(2+)*C69H57O3S6(3-)*9C50H41NO2S4(2-)*12Cl(1-)*9BF4(1-)*2CH3NO2=C519H426B9N9O21F36S42Cl12Pd21*2CH3NO2

Conditions	Yield
In nitromethane; dichloromethane byproducts: AgCl; 3 equiv. of AgBF4, 3 equiv. of R-CN block, stirring (ratio CH2Cl2/CH3NO21/1); filtration (over hyflo), chromatography (SiO2, CH3NO2);	100%

silver tetrafluoroborate (14104-20-2) + [(PdCl(C6H5SCH2)2C6H2OCH2)2C6H3CH2CN] (178438-03-4) + 21Pd(2+)*C69H57O3S6(3-)*9C50H41NO2S4(2-)*12Cl(1-)*9BF4(1-)*2CH3NO2=C519H426B9N9O21F36S42Cl12Pd21*2CH3NO2 → 45Pd(2+)*C69H57O3S6(3-)*21C50H41NO2S4(2-)*24Cl(1-)*21BF4(1-)*10CH3NO2=C1119H918B21N21O45F84S90Cl24Pd45*10CH3NO2

Conditions	Yield
In nitromethane; dichloromethane byproducts: AgCl; 3 equiv. of AgBF4, 3 equiv. of R-CN block, stirring (ratio CH2Cl2/CH3NO21/1); filtration (over hyflo), chromatography (SiO2, CH3NO2);	100%

silver tetrafluoroborate (14104-20-2) + N,N,N,N,-tetramethylethylenediamine (110-18-9) + di-μ-chloro-bis[η**3-2-butenyl]dipalladium → [η**3-2-butenyl](N,N,N',N'-tetramethylethylenediamine)palladium(II) tetrafluoroborate

Conditions	Yield
In tetrahydrofuran byproducts: AgCl; π-2-butenylpalladium chloride dimer dissolved in THF; AgBF4 added; stirred 10 min; AgCl removed and washed with THF; TMEDA added dropwise toTHF extracts, stirred 10 min; solvent vac. removed; elem. anal.;	100%

pyridine (110-86-1) + silver tetrafluoroborate (14104-20-2) + Pd(C5H3N(CH2P(C6H5)2)2)Cl2 (331861-55-3, 104578-19-0) → Pd(C5H3N(CH2P(C6H5)2)2)(C5H5N)(2+)*2BF4(1-)=[Pd(C5H3N(CH2P(C6H5)2)2)(C5H5N)](BF4)2

Conditions	Yield
In dichloromethane byproducts: AgCl; Ar-atmosphere; filtering, concg., crystn. on Et2O addn. (2 - 3 h, -20°C), filtering, washing (Et2O), drying (vac.); elem. anal.;	100%

5,17-diisocyanato-25,26,27,28-tetrapropoxycalix[4]arene (655244-42-1) + silver tetrafluoroborate (14104-20-2) → poly[(5,17-diisocyanato-25,26,27,28-tetrapropoxycalix[4]arene) silver(I)] tetrafluoroborate (655244-44-3)

Conditions	Yield
In acetonitrile soln. calix(4)arene in MeCN was added to soln. AgBF4 in MeCN and stirredfor 1 h at room temp.; solvent was evapd.; elem. anal.;	100%

5,11-diisocyanato-25,26,27,28-tetrapropoxycalix[4]arene (655244-36-3) + silver tetrafluoroborate (14104-20-2) → poly[(5,11-diisocyanato-25,26,27,28-tetrapropoxycalix[4]arene) silver(I)] tetrafluoroborate (655244-38-5)

Conditions	Yield
In acetonitrile soln. calix(4)arene in MeCN was added to soln. AgBF4 in MeCN and stirredfor 1 h at room temp.; solvent was evapd.; elem. anal.;	100%

silver tetrafluoroborate (14104-20-2) + [Cu(C12H6N2)4(C6H4)6(OCH2CH2)12O2](1+)*BF4(1-)=[Cu(C12H6N2)4(C6H4)6(OCH2CH2)12O2][BF4] (178690-91-0) → [CuAg(C12H6N2)4(C6H4)6(OCH2CH2)12O2](2+)*2BF4(1-)=[CuAg(C12H6N2)4(C6H4)6(OCH2CH2)12O2][BF4]2

Conditions	Yield
In dichloromethane; benzene excess of AgBF4, stirring (room temp., overnight); pptn., addn. of H2O, decantation, washing (H2O), drying (MgSO4), crystn.(C6H6/CH2Cl2);	100%

silver tetrafluoroborate (14104-20-2) + 1,5-dithia-7-cyclononyne (153615-59-9) → Ag(1+)*C7H10S2*BF4(1-) = [Ag(C7H10S2)]BF4 (188485-85-0)

Conditions	Yield
In tetrahydrofuran (N2); elem. anal.;	100%

silver tetrafluoroborate (14104-20-2) + 1,6-dithiacyclodec-8-yne (180135-36-8) → Ag(1+)*C8H12S2*BF4(1-) = [Ag(C8H12S2)]BF4 (188485-89-4)

Conditions	Yield
In tetrahydrofuran (N2); elem. anal.;	100%

silver tetrafluoroborate (14104-20-2) + 1,5-dithiacyclonon-7-yne-3-ol (180135-35-7) → Ag(1+)*C7H10OS2*BF4(1-) = [Ag(C7H10OS2)]BF4 (188485-97-4)

Conditions	Yield
In tetrahydrofuran (N2); elem. anal.;	100%

silver tetrafluoroborate (14104-20-2) + 1,7-dithia-4-oxa-cycloundec-9-yne (153615-60-2) → Ag(1+)*C8H12OS2*BF4(1-) = [Ag(C8H12OS2)]BF4 (188486-01-3)

Conditions	Yield
In tetrahydrofuran (N2); elem. anal.;	100%

silver tetrafluoroborate (14104-20-2) + 1,4,9,12-tetrathiacyclohexadec-6,14-diyne (180135-32-4) → 2Ag(1+)*C12H16S4*2BF4(1-) = [Ag2(C12H16S4)](BF4)2

Conditions	Yield
In tetrahydrofuran (N2); elem. anal.;	100%

Upstream product

• 20667-12-3 silver(l) oxide 
• 7637-07-2 boron trifluoride 
• 7664-39-3 hydrogen fluoride 
• 7440-22-4 silver 
• 11113-87-4 silver fluoride 
• 109-63-7 trifluoroborane diethyl ether 
• 13826-83-0 ammonium tetrafluroborate 
• 7782-41-4 fluorine 
• 13775-07-0 uranium pentafluoride 
• 7787-71-5 bromine trifluoride 

Downstream Products

• 5239-43-0 7-(5-oxo-1-cyclopenten-1-yl)heptanoic acid 
• 75646-05-8 methyl 3-methyl-3-anilino-7-(2-phenoxyacetamido)cepham-4-carboxylate 
• 75646-04-7 Methyl 3-methoxy-3-methyl-7-(2-phenoxyacetamido) cepham-4-carboxylate 
• 879689-50-6 [((R)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl)Pd(η3-allyl)][BF4] 
• 75-19-4 cyclopropane 
• 287-23-0 cyclobutane 
• 287-92-3 Cyclopentane 
• 7789-20-0 water-d2 
• 136723-40-5 {Rh(1,5-cyclooctadiene)((4-CH₃C₆H₄N=PPh₂)2CH₂)}BF₄ 
• 145116-90-1 AuC₅H₁₁NP(C₆H₅)3⁽¹⁺⁾*BF₄^(1-)={C₅H₁₁NAuP(C₆H₅)3}BF₄ 
• 26042-64-8 silver hexafluoroantimonate 
• 7637-07-2 boron trifluoride 

Relevant articles and documents

Ethylene sensing by silver(I) salt-impregnated luminescent films

Luminescent oligomers and polymers doped with silver(I) salts were used as optical sensors for ethylene and other gaseous small molecules. Films of poly(vinylphenylketone) (PVPK) or 1,4-bis(methylstyryl)benzene (BMSB) impregnated with AgBF4, AgSbF6, or AgB(C6F 5)4 respond to ethylene exposures with a reversible emission quenching that is proportional to the pressure of the gas. Experiments with various analytes revealed that only gases capable of forming coordinate bonds with Ag(I) ions (i.e., ethylene, propylene, and ammonia) produced a sensing response. Comparison of the effects of ethylene and tetradeuterioethylene revealed that the emission quenching was due to enhanced vibrational relaxation. The Ag(I) ions are essential to the observed optical response. The oligomer/polymer support enhances the response characteristics of the impregnated salt by promoting separation of Ag(I) from its anion, a separation that improves accessibility of the Ag(I) ion to the gaseous analytes. Salts with large lattice energies, where the anion is not dissociated from Ag(I) in the matrix, fail to sensitize film responses. Photoluminescence experiments with Ag(I)-impregnated BMSB films established that the Ag(I) ions serve to communicate the analyte-binding signal to the support by altering the support-based emission. These experiments demonstrate a sensing paradigm where simultaneous coordination of Ag(I) ions to the support matrix and to a gaseous analyte enables the optical response.

Carbon-ionic liquid double-layer capacitors

A series of electrochemical capacitors, based on activated carbon powders (ACP, specific surface area 870 and 2600 m2/g) and ionic liquids as electrolytes, were prepared and tested. The ionic liquids consisted of 1-ethyl-3-methyl imidazolium (EMIm+), 1-butyl-3-methyl imidazolium (BMIm+) and 1-methyl-1-propyl pyrrolidinium (BMPy+) cations, as well as of tetrafluoroborate, hexafluorophosphate and bis((trifluoromethyl)sulfonyl) imide anions. A typical capacitor consisted of two electrodes each with a mass of ca. 15-30 mg, and showed a capacity of ca. 0.35-1.5F; this leads to a specific capacity of the carbon electrode material within the range of 45 (ACP 870 m2/g)-180 F/g (ACP 2600 m 2/g). The specific capacity expressed versus total surface of carbon material was within the range of 5.2-6.9 μF/cm2. The electrochemical stability window of ionic liquids determined at the glassy carbon electrode is within the range of ca. 3.0-4.2 V. The energy stored in a capacitor based on activated carbons and ionic liquids may be high, due to a broad practical electrochemical stability window of ca. 3 V. Ionic liquids are characterised by negligible vapour pressure; such a capacitor emits no volatile organic compounds and may be regarded as environmentally friendly.

Luminescent chains formed from neutral, triangular gold complexes sandwiching Tl(I) and Ag(I)

It has been found that several trinuclear complexes of Au(I) interact with silver and thallium salts to intercalate Ag+ and Tl+ cations, thereby forming chains. The resulting sandwich clusters center the cations between the planar trinuclear moieties producing structures in which six Au(I) atoms interact with each cation in a distorted trigonal prismatic coordination. The resultant (B3AB3B3AB3)(∞) pattern of metal atoms also shows short (~3.0 A) aurophilic interactions between BAB molecular centers. These compounds display a strong visible luminescence, under UV excitation, which is sensitive to temperature and the metal ion interacting with the gold. X-ray crystal structures are reported for Ag([Au(μ-C2,N3-bzim)]3)2BF4·CH2Cl2 (P1, Z = 2, a = 14.4505(1)A; b = 15.098(2)A; c = 15.957(1)A; α = 106.189(3)°; β = 103.551(5)°; γ = 101.310(5)°); Tl([Au(μ-C2,N3-bzim)]3)2PF6·0.5C4H8O (P1, Z = 2, a = 15.2093(1)A; b =15.3931(4)A; c = 16.1599(4)A; α = 106.018(1)°; β = 101.585(2)°; γ=102.068(2)°); and Tl([Au(μ-C(OEt)=NC6H4CH3)]3)2PF6·C4H8O (P2(1)/n, Z = 4, a = 16.4136(3)A; b = 27.6277(4)A; c = 16.7182(1)A; β = 105.644(1)°). Each compound shows that the intercalated cation, Ag+ or Tl+, coordinates to a distorted trigonal prism of six Au(I) atoms. The counteranions reside well apart from the cations between the cluster chains.

catena-poly[silver-μ-(di-2-pyridyl ketone)-N,O:N′,O] tetrafluoroborate

The title complex, [Ag(C11H8N2O)]n+. n(BF4)-, contains polymeric [silver(di-2-pyridyl ketone)]n+ zigzag chains, counterbalanced by BF4-/sup

Synthesis of new allyl palladium complexes bearing purine-based NHC ligands with antiproliferative and proapoptotic activities on human ovarian cancer cell lines

A series of new palladium allyl complexes bearing purine-based carbenes derived from caffeine, theophylline and theobromine have been prepared and characterized by NMR spectroscopy, and elemental analysis and in two cases by single crystal X-ray diffraction. The cytotoxic and proapoptotic activities of compounds have been determined in vitro on human ovarian cancer A2780 and SKOV-3 cell lines. These experiments have shown that the palladium-allyl fragment induces a general cytotoxicity, but the choice of the supporting ligands is of paramount importance for achieving the best results. In particular complexes 4c, 4d and 5d exhibit a higher antiproliferative effect (IC50: 0.09, 0.81 and 0.85 μM respectively) than cisplatin (IC50: 1.5 μM) on A2780 cells, and 4d (IC50: 1.7 μM vs. 5.94 μM) on SKOV-3 cell line. Moreover in many cases it has been proved that the cytotoxicity of our complexes is associated with the induction of apoptosis.