7784-33-0

Basic information

• Product Name: ARSENIC (III) BROMIDE
• Synonyms: ARSENIC (OUS) BROMIDE;ARSENIC TRIBROMIDE;ARSENIC BROMIDE;ARSENIC (III) BROMIDE;Arsenic(ii) bromide;arsenic(ii)bromide;arsenicbromide(asbr3);arseniousbromide
• CAS NO: 7784-33-0
• Molecular Formula: AsBr₃
• Molecular Weight: 314.63
• EINECS: 232-057-4
• Product Categories: metal halide
• Mol File: 7784-33-0.mol
• Article Data: 4

Chemical Properties

• Melting Point: 31 °C
• Boiling Point: 221 °C
• Appearance: /yellow orthorhombic crystals
• Density: 3,54 g/cm3
• Vapor Pressure: 0.163mmHg at 25°C
• Water Solubility: decomposed in H2O, forming HBr, As2O3; miscible with ether, benzene [MER06]
• Sensitive: moisture sensitive
• CAS DataBase Reference: ARSENIC (III) BROMIDE(CAS DataBase Reference)
• NIST Chemistry Reference: ARSENIC (III) BROMIDE(7784-33-0)
• EPA Substance Registry System: ARSENIC (III) BROMIDE(7784-33-0)

Safety Data

• Hazard Codes: N-T,N,T
• Statements: 50/53-45-34-23/25
• Safety Statements: 61-60-53-36/37/39-28A-20/21-45-28
• RIDADR: 1555
• HazardClass: 6.1(a)
• PackingGroup: II
• Hazardous Substances Data: 7784-33-0(Hazardous Substances Data)

Usage

Chemical Properties

Faintly yellow solid

Uses

Analytical chemistry, medicine.

Safety Profile

Confirmed human carcinogen. A poison. See also ARSENIC COMPOUNDS and BROMIDES. When heated to decomposition it emits very toxic fumes of As and Br-.

Purification Methods

It hydrolyses in H2O, but less readily than AsCl3. POISONOUS. [Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 597 1963.]

InChI:InChI=1/AsBr3/c2-1(3)4

Synthetic route

hydrogen bromide (10035-10-6, 12258-64-9) + arsenic(III) trioxide → arsenic(III) bromide (7784-33-0)

Conditions	Yield
at 100℃; for 0.5h; Temperature;	92%
In hydrogen bromide aq. HBr; As2O3 dissoln. with heating;

tributoxyarsane (3141-10-4) + boron tribromide (10294-33-4) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent) dropwise addn. of BBr3 with continuous stirring to tributyl arsenite at -5 to -7°C under dry Ar or N2, additional stirring (20 min), decanting the liquid phase; distg. the solid at reduced pressure in a CO2 stream; elem. anal.;	68.9%

arsenic + selenium oxibromide → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In further solvent(s) byproducts: Se2Br2; from SeOBr2 and As;;

arsenic + bromine (7726-95-6) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent) from As and bromine vapor;;
In carbon disulfide from As and bromine dild. with CS2;;
In neat (no solvent) addition of small amounts of powdered As to Br2, until no more inflammation takes place;; distillation;;

bromine (7726-95-6) + arsenic(III) trioxide → arsenic(V) oxide + arsenic(III) bromide (7784-33-0)

Conditions	Yield
In not given byproducts: O2;
In neat (no solvent) byproducts: O2; room temperature;;
In neat (no solvent) byproducts: O2; room temperature;;

bromine (7726-95-6) + arsenic(III) trioxide → arsenic(III) bromide (7784-33-0)

Conditions	Yield
With sulfur In neat (no solvent) byproducts: SO2;
With sulfur In neat (no solvent) byproducts: SO2; heating of a mixture of As, Br2 and S for 7 hours;; pptn.; melting and filtation through glass wool;;	>99
With S In neat (no solvent) byproducts: SO2; heating of a mixture of As, Br2 and S for 7 hours;; pptn.; melting and filtation through glass wool;;	>99
With sulfur In not given as in: G. Oddo and U.Giachery, Gazz. Chim. Ital., 1924, 53, 56;

arsenic trichloride (7784-34-1) + potassium bromide (7558-02-3) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
byproducts: KCl; heated for some hours at 200 °C in closed tube;
In neat (no solvent) heating, exclusion of H2O and O2;;

arsenic + ethyl bromide (74-96-4) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In not given byproducts: C2H4;

arsenic + disulphur dibromide (13172-31-1) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In further solvent(s) byproducts: As sulfide; from S2Br2 and excess of As;;
In further solvent(s) byproducts: As sulfide; from S2Br2 and excess of As;;
In neat (no solvent) byproducts: arsenic sulfide; exothermic reaction;;

boron tribromide (10294-33-4) + arsenic trichloride (7784-34-1) → boron trichloride (10294-34-5) + arsenic(III) bromide (7784-33-0)

BBr3*AsH3 → arsenic + arsenic(III) bromide (7784-33-0)

Conditions	Yield
With O2 In neat (no solvent) byproducts: B2O3, BO(OH), HBr; slow addn. of O2; cooling;;

BBr3*AsH3 + arsenic trichloride (7784-34-1) → arsenic + arsenic(III) bromide (7784-33-0)

Conditions	Yield
In not given byproducts: HCl, BCl3; also at -50°C;;

bromine (7726-95-6) + arsenic trisulfide → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In not given at ambient temp.;;

arsenic trisulfide + boron tribromide (10294-33-4) → diboron trisulfide + arsenic(III) bromide (7784-33-0)

Conditions	Yield
heating several h at 120-140°C;	A >99 B n/a
heating several h at 120-140°C;	A >99 B n/a

selenyl bromide (7789-51-7) + arsenic trisulfide → arsenic(III) bromide (7784-33-0) + diselenium dibromide (1015938-55-2, 7789-52-8)

Conditions	Yield
In not given
In not given

arsenic (III) oxide + bromine (7726-95-6) → arsenic(V) oxide + arsenic(III) bromide (7784-33-0)

Conditions	Yield
In not given byproducts: O2;

arsenic + bromine (7726-95-6) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent) passing very pure Br2 vapor over metallic As;; repeated distillation; removal of Br2 by distillation over Cu; very pure;;
In neat (no solvent) passing very pure Br2 vapor over metallic As;; repeated distillation; removal of Br2 by distillation over Cu; very pure;;

arsenic trichloride (7784-34-1) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
With antimony bromide or titanium bromide In not given byproducts: SnCl4;
With antimony bromide or titanium bromide In not given byproducts: SnCl4;

phosphorus tribromide (7789-60-8) + arsenic trichloride (7784-34-1) → arsenic(III) bromide (7784-33-0) + phosphorus trichloride (7719-12-2, 52843-90-0)

Conditions	Yield
In neat (no solvent) mixing starting material;;

arsenic trichloride (7784-34-1) + stannic bromide (7789-67-5) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In not given byproducts: SnCl4;
In not given byproducts: SnCl4;

carbon tetrabromide (558-13-4) + arsenic trichloride (7784-34-1) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent) heating to 105 - 216°C for some weeks;;

{PCl4}(1+)*{PCl5Br}(1-)={PCl4}{PCl5Br} + arsenic(III) fluoride (7784-35-2) → {PCl4}(1+)*{PF6}(1-)={PCl4}{PF6} (16919-35-0) + arsenic trichloride (7784-34-1) + arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent)

{PCl4}(1+)*{PCl5Br}(1-)={PCl4}{PCl5Br} + arsenic(III) fluoride (7784-35-2) → phosphorus pentafluoride (7647-19-0, 874483-74-6) + arsenic trichloride (7784-34-1) + arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent) vigorous reaction with excess AsF3;;

arsenic(III) fluoride (7784-35-2) + phosphorus tribromide (7789-60-8) → arsenic(III) bromide (7784-33-0) + trifluorophosphane (7783-55-3)

Conditions	Yield
In neat (no solvent)

phenylarsinic acid (25400-22-0) + hydrogen bromide (10035-10-6, 12258-64-9) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent)
In neat (no solvent)

hydrogen bromide (10035-10-6, 12258-64-9) + (4-aminophenyl)arsenous acid → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent)
In neat (no solvent)

AsBr4(1+)*AlBr4(1-)={AsBr4}{AlBr4} (119484-32-1) → bromine (7726-95-6) + aluminium bromide (7727-15-3) + arsenic(III) bromide (7784-33-0)

Conditions	Yield
equilibrium at room temp.;

AgAsS + bromine (7726-95-6) → silver(I) bromide + disulphur dibromide (13172-31-1) + arsenic(III) bromide (7784-33-0)

{PBr4}(1+)*{PF6}(1-)={PBr4}{PF6} (12514-48-6) + arsenic(III) fluoride (7784-35-2) → phosphorus pentafluoride (7647-19-0, 874483-74-6) + arsenic(III) bromide (7784-33-0)

Conditions	Yield
In neat (no solvent) reaction at ambient temperature;;

Phosphorus - arsenic + bromine (7726-95-6) → arsenic(III) bromide (7784-33-0)

Conditions	Yield
In not given byproducts: PBr3;
In not given byproducts: PBr3;

4-methylpyridine-1-oxide (1003-67-4) + arsenic(III) bromide (7784-33-0) → 2 arsenic tribromide * 3 γ-picoline-N-oxide

Conditions	Yield
In tetrachloromethane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	88%
In tetrachloromethane; hexane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	88%
In chloroform described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	88%

tetrahydrofuran (109-99-9) + silver tetrakis([2,2,2-trifluoro-1,1-bis(trifluoromethyl)ethyl]oxy)aluminate (428441-32-1) + arsenic(III) bromide (7784-33-0) → [((CF3)3CO)2Al(μ-F)(THF)]2 (851428-34-7) + AsBr2(1+)*Al(OC(CF3)3)4(1-)=AsBr2Al(OC(CF3)3)4 (851428-58-5)

Conditions	Yield
In neat (no solvent, solid phase) byproducts: AgBr; (Ar); keeping a mixt. of silver salt and AsBr3 at room temp.; extn. with pentane, concn., evapn., dissolving in CH2Cl2/THF 3:1, storage at -30°C;	A 88% B 0%

arsenic(III) bromide (7784-33-0) + triethylamine hydrobromide (636-70-4) → 3(C2H5)3NH(1+)*{As3Br12}(3-)={(C2H5)3NH}3{As3Br12}

Conditions	Yield
In nitromethane cooling;	86%
In nitromethane all manipulations under inert atmosphere; adding (Et3NH)Br to a soln. of AsBr3 (molar ratio), stirring (3 h, room temp.); filtering, crystn. (cooling to -20°C, 2 - 3 d); elem. anal.;

piperidine hydrobromide (14066-85-4) + arsenic(III) bromide (7784-33-0) → (pipH)3(As2Br9)*(pipH)Br

Conditions	Yield
In acetonitrile (Ar); addn. of AsBr3 in absolute CH3CN to suspension of (pipH)Br in CH3CN; a stirred suspension was heated under reflux for 3 d; filtn. at room temp.; slowly cooling of the yellow soln. to -30°C; yielded crystals; elem. anal.;	83%

arsenic(III) bromide (7784-33-0) + tetraphenylphosphonium bromide (2751-90-8) → (Ph4P)2(As2Br8)

Conditions	Yield
In acetonitrile (Ar); addn. of AsBr3 in absolute CH3CN to suspension of (Ph4P)2Br in CH3CN; stirred suspension is heated under reflux for 3 d; filtn. at room temp.; slow cooling of the yellow soln. to -30°C; elem. anal.;	82%

3-picoline-N-oxide (1003-73-2) + arsenic(III) bromide (7784-33-0) → arsenic tribromide * β-picoline-N-oxide

Conditions	Yield
In tetrachloromethane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	78%
In tetrachloromethane; hexane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	78%
In chloroform described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	78%

tetra-n-propylammonium bromide (1941-30-6) + arsenic(III) bromide (7784-33-0) → {(n-prop)4N}2(As2Br8)

Conditions	Yield
In acetonitrile (Ar); addn. of AsBr3 in absolute CH3CN to suspension of ((n-prop)4N)Br in CH3CN; a stirred suspension was heated under reflux for 3 d; filtn. at room temp.; slowly cooling of the yellow soln. to -30°C; yielded crystals; elem. anal.;	72%

arsenic(III) bromide (7784-33-0) + (tert-butylimino)(2,2,6,6-tetramethylpiperidino)borane (89201-97-8) → tert-butyl-((bromo(2,2,6,6-tetramethylpiperidino)boryl)amino)arsenic dibromide (113748-60-0)

Conditions	Yield
In hexane oxygen and moisture exclusion, stirring (room temp., 2 h); solvent removal, recrystn. (hexane, -78°C); elem. anal.;	71%

tetraethylammonium bromide (71-91-0) + arsenic(III) bromide (7784-33-0) → (Et4N)3(As3Br12)

Conditions	Yield
In acetonitrile (Ar); addn. of AsBr3 in absolute CH3CN to suspension of (Et4N)3Br in CH3CN; a stirred suspension was heated under reflux for 3 d; filtn. at room temp.; slowly cooling of the yellow soln. to -30°C; yielded crystals; elem. anal.;	70%

2-methylpyridine N-oxide (931-19-1) + arsenic(III) bromide (7784-33-0) → arsenic tribromide * 2 α-picoline-N-oxide

Conditions	Yield
In tetrachloromethane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	68%
In tetrachloromethane; hexane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	68%
In chloroform described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	68%

bis(trifluoromethylseleno)mercury (870-61-1) + arsenic(III) bromide (7784-33-0) → tris(trifluoromethylseleno)arsine

Conditions	Yield
In carbon disulfide 0°C, 3 h;	65.7%

arsenic pentafluoride (7784-36-3) + arsenic(III) bromide (7784-33-0) → AsBr4(1+)*AsF6(1-)={AsBr4}{AsF6} (119484-31-0) + arsenic(III) fluoride (7784-35-2)

Conditions	Yield
With bromine Condensing of AsF5 onto Br2 and AsBr3 at -196°C, warming to -5°C until a clear soln. is formed (1 min), cooling (-196°C), repeating of process in excess of 10 times.; Evapn. of volatiles in vac (-5°C, 10 min).;	A 60% B n/a

2-methylpyridine N-oxide (931-19-1) + arsenic(III) bromide (7784-33-0) → arsenic tribromide * α-picoline-N-oxide

Conditions	Yield
In tetrachloromethane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	60%
In tetrachloromethane; hexane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	60%
In chloroform described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	60%

silver tetrakis([2,2,2-trifluoro-1,1-bis(trifluoromethyl)ethyl]oxy)aluminate (428441-32-1) + bromine (7726-95-6) + arsenic(III) bromide (7784-33-0) → AsBr4(1+)*Al(OC(CF3)3)4(1-)=AsBr4Al(OC(CF3)3)4 (825633-59-8)

Conditions	Yield
In dichloromethane byproducts: AgBr; (N2 or Ar); addn. of AsBr3 and Br2 to silver salt, addn. of CH2Cl2 at -78°C, storage at -80°C for 3 d; filtration, concn., crystn. (CH2Cl2);	54%
In dichloromethane-d2 byproducts: AgBr; (N2 or Ar); addn. of CD2Cl2 to silver salt and AsBr3 in NMR tube at -78°C, addn. of Br2, sealing, storage overnight at -78°C, warming to -20°C; detected by NMR;

pyridine N-oxide (694-59-7) + arsenic(III) bromide (7784-33-0) → arsenic tribromide * 2 pyridine-N-oxide

Conditions	Yield
In tetrachloromethane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	50%
In tetrachloromethane; hexane described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	50%
In chloroform described by Dunston, P. O. and Airoldi, C., J. Chem. Eng. Data, 33 (1983) 93 and Dunstan, P. O. and Santos, L. C. R. dos, Thermochim. Acta, 156 (1989) 163;; elem. anal.;;	50%

(2,6-diisopropylphenylimino)(2,2,6,6-tetramethylpiperidino)borane (113748-54-2) + arsenic(III) bromide (7784-33-0) → ((bromo(2,2,6,6-tetramethylpiperidino)boryl)(2,6-diisopropylphenyl)amino)arsenic dibromide (113748-66-6)

Conditions	Yield
In hexane oxygen and moisture exclusion, mixing of solns. (room temp.), stirring (12 h); conc. (pptn.), washing (hexane), drying (high vacuum); elem. anal.;	41%

dipotassium sulfur diimide + arsenic(III) bromide (7784-33-0) → As4S5N10*0.5CH2Cl2

Conditions	Yield
In diethyl ether; acetonitrile byproducts: KBr; addn. of AsBr3 in Et2O to suspn. of K2SN2 in MeCN (-40°C), warming to room temp., stirring (2 h); filtration (over Na2SO4), crystn. by concn. and cooling (-30°C),recrystn. (CH2Cl2 or ether/CH2Cl2 (5:1));	40%

arsenic(III) bromide (7784-33-0) + chromium(0) hexacarbonyl (199620-14-9, 13007-92-6) → μ-Bromoarsandiyl-bis(pentacarbonylchrom)

Conditions	Yield
With tetrahydrofuran In tetrahydrofuran Irradiation (UV/VIS); Cr-comlex irradiated in THF, AsBr3 was added, the soln. was stirred for10 h at 20°C under N2; evapd. in vac., dissolved in toluene, filtered (silicagel), crystd. from CH2Cl2; elem anal.;	40%

gallium(III) trichloride + arsenic(III) bromide (7784-33-0) + 2,4,6-tri-tert-butyl-1,3,5-triphosphinine (173166-52-4) → C15H27AsBr2P3(1+)*Cl4Ga(1-)

Conditions	Yield
In hexane; dichloromethane at 35℃; for 40h; Inert atmosphere; Schlenk technique; Glovebox;	40%

tris(4-fluorophenyl)phosphine selenide (54300-47-9) + arsenic(III) bromide (7784-33-0) → C18H12F3PSe*AsBr3 (1394247-61-0)

Conditions	Yield
In diethyl ether at 20℃; for 48h; Inert atmosphere;	39%

dipotassium tetracarbonyl(1,1',3,3'-tetra-tert-butyl-5,5'-pentafulvalene)diferrate + arsenic(III) bromide (7784-33-0) → bis-(dibromoarsenido)tetracarbonyl(1,1',3,3'-tetra-tert-butyl-5,5'-pentafulvalene)diiron * THF

Conditions	Yield
In tetrahydrofuran under Ar: dropwise addn. of a soln. of AsBr3 in THF to a soln. of the diiron compound in THF at -40°C; stirring for 3 d at room temperature; distillation of the solvent in vac.;; dissolving of the residue in dichloromethane; filtration; reducing and covering with petroleum ether; cooling to -30°C; recrystallization in THF/petroleum ether; elem. anal.;;	19%

[Ga(2-((2,6-diisoproylphenyl)amino)-4-((2,6-diisopropylphenyl)imino)-2-pentene)] (317322-17-1) + arsenic(III) bromide (7784-33-0) → HC[C(Me)N(2,6-iPr2-C6H3)]2(Br)GaSiBr3 (879329-55-2) + C58H82AsBrGa2N4

Conditions	Yield
Stage #1: [Ga(2-((2,6-diisoproylphenyl)amino)-4-((2,6-diisopropylphenyl)imino)-2-pentene)]; arsenic(III) bromide In toluene for 240h; Stage #2: In hexane at 20℃; for 21h;	A n/a B 10%

silver(I) bromide + arsenic(III) bromide (7784-33-0) → AgAlBr4

Conditions	Yield
With aluminum tri-bromide

Upstream product

• 7726-95-6 bromine 
• 7784-34-1 arsenic trichloride 
• 12514-48-6 {PBr₄}⁽¹⁺⁾*{PF₆}^(1-)={PBr₄}{PF₆} 
• 7784-35-2 arsenic(III) fluoride 
• 119484-32-1 AsBr₄⁽¹⁺⁾*AlBr₄^(1-)={AsBr₄}{AlBr₄} 
• 10035-10-6 hydrogen bromide 
• 25400-22-0 phenylarsinic acid 
• 3141-10-4 tributoxyarsane 
• 10294-33-4 boron tribromide 
• 7789-60-8 phosphorus tribromide 
• 558-13-4 carbon tetrabromide 
• 7789-67-5 stannic bromide 
• 7789-51-7 selenyl bromide 

Downstream Products

• 119484-31-0 AsBr₄⁽¹⁺⁾*AsF₆^(1-)={AsBr₄}{AsF₆} 
• 7784-35-2 arsenic(III) fluoride 
• 131484-81-6 trans-[(Cy₃P)₂PtBr₂] 
• 7784-34-1 arsenic trichloride 
• 7784-45-4 arsenic triiodide 
• 10294-28-7 gold bromide 
• 7440-57-5 gold 
• 7789-67-5 stannic bromide 
• 124-38-9 carbon dioxide 
• 7647-15-6 sodium bromide 
• 1394247-61-0 C₁₈H₁₂F₃PSe*AsBr₃ 
• 506-83-2 methylmercury(II) bromide 

Relevant articles and documents

Synthetic and structural study of peri-substituted phosphine-arsines

A series of phosphorus-arsenic peri-substituted acenaphthene species have been isolated and fully characterised, including single crystal X-ray diffraction. Reactions of EBr3 (E = P, As) with iPr2PAcenapLi (Acenap = acenaphthene-5,6-diyl) afforded the thermally stable peri-substitution supported donor–acceptor complexes, iPr2PAcenapEBr2 3 and 4. Both complexes show a strong P→E dative interaction, as observed by X-ray crystallography and31P NMR spectroscopy. DFT calculations indicated the unusual As???As contact (3.50 ?) observed in the solid state structure of 4 results from dispersion forces rather than metallic interactions. Incorporation of the excess AsBr3 in the crystal structure of 3 promotes the formation of the ion separated species [iPr2PAcenapAsBr]+Br? 5. A decomposition product 6 containing the rare [As6Br8]2– heterocubane dianion was isolated and characterised crystallographically. The reaction between iPr2PAcenapLi and EtAsI2 afforded tertiary arsine (BrAcenap)2AsEt 7, which was subsequently lithiated and reacted with PhPCl2 and Ph2PCl to afford cyclic PhP(Acenap)2AsEt 8 and acyclic EtAs(AcenapPPh2)2 9.

Preparation of stable AsBr4+ and I2As-PI 3+ salts. Why didn't we succeed to prepare AsI 4+ and As2X5+? A combined experimental and theoretical study

In analogy to our successful PX2+ insertion reactions, an AsX2+ insertion route was explored to obtain new arsenic halogen cations. Two new salts were prepared: AsBr4+[Al(OR)4]-, starting from AsBr3, Br2 and Ag[Al(OR)4], and I 2As-PI3+[Al(OR)]4 from AsI 3, PI3 and Ag[Al(OR)4] (R = C(CF 3)3). The first cation is formally a product of an AsBr2+ insertion into the Br2 molecule and the latter clearly a PI2+ insertion into the As-I bond of the AsI3 molecule. Both compounds were characterized by IR and NMR spectroscopy, the first also by its X-ray structure. Reactions of Ag[Al(OR)4] with AsI3 do not lead to ionization and Agi formation but rather lead to a marginally stable Ag(AsI3)2+[Al(OR)]4 salt. Despite many attempts we failed to prepare other PX-cation analogues such as AsI 4+, As2X5+ and P 4AsX2+ (X = Br, I). To explain these negative results the thermodynamics of the formation of EX2+, EX4+ and E2X5+ (E = As, P; X = Br, I) was carefully analyzed with MP2/TZVPP calculations and inclusion of entropy and solvation effects. We show that As2Br5 + is in very rapid equilibrium with AsBr2+ and AsBr3 (ΔG°(CH2Cl2) = +30 kJ mol -1). The extremely reactive AsBr2+ cation available in the equilibrium accounts for the observed decomposition of the [Al(OR)4]- anion. By contrast, the stability of AsI 3 against Ag[Al(OR)4] appears to be kinetic and, if prepared by a suitable route, As2I5+ would be expected to have a stability intermediate between the known P2I 5+ and P2Br5+. The Royal Society of Chemistry 2005.