161265-03-8

Basic information

• Product Name: 4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene
• Synonyms: XANT PHOS;4,5-BIS-DIPHENYLPHOSPHANYL-9,9-DIMETHYL-9H-XANTHENE;4,5-BIS(DIPHENYLPHOSPHINO)-9,9-DIMETHYLXANTHENE;9,9-DIMETHYL-4,5-BIS(DIPHENYLPHOSPHINO)XANTHENE;(9,9-DIMETHYL-9H-XANTHENE-4,5-DIYL)BIS[DIPHENYL PHOSPHINE];Dimethylbisdiphenylphosphinoxanthene;9,9-Dimethyl-4,5-bis(diphenylphosphino)xanthene, XANTPHOS;4,5-BIS(DIPHENYLPHOSPHINO)-9,9-DIMETHYLX
• CAS NO: 161265-03-8
• Molecular Formula: C₃₉H₃₂OP₂
• Molecular Weight: 578.62
• EINECS: 1308068-626-2
• Product Categories: Phosphines;Amino Acid Derivatives;Phosphine Ligands;Synthetic Organic Chemistry;organophosphine ligand;Achiral Phosphine;Aryl Phosphine
• Mol File: 161265-03-8.mol
• Article Data: 18

Chemical Properties

• Melting Point: 224-228 °C(lit.)
• Boiling Point: 665.7 °C at 760 mmHg
• Flash Point: 450℃
• Appearance: White to light yellow/Crystals
• Vapor Pressure: 7.61E-17mmHg at 25°C
• Storage Temp.: Room temperature.
• Solubility: Soluble in organic solvents.
• CAS DataBase Reference: 4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene(CAS DataBase Reference)
• NIST Chemistry Reference: 4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene(161265-03-8)
• EPA Substance Registry System: 4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene(161265-03-8)

Safety Data

• Hazard Codes: Xn
• Statements: 37-20/22
• Safety Statements: 37/39-26
• WGK Germany: 3
• TSCA: No
• Hazardous Substances Data: 161265-03-8(Hazardous Substances Data)

Usage

Application

4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene is an organophosphorus compound derived from the heterocycle xanthene. It is used as a bidentate ligand and is noteworthy for having a particularly wide bite angle. Such ligands are useful in the hydroformylation of alkenes.

Chemical Properties

White to light yellow crystals

Uses

Different sources of media describe the Uses of 161265-03-8 differently. You can refer to the following data:
1. suzuki reaction
2. 4,5-Bis(diphenylphosphino)-9, 9-dimethylxanthene is used as a bidentate ligand, which finds application in hydroformylation of alkenes.
3. 1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis[1,1-diphenyl-phosphine is an organophosphorus compound derived from the heterocycle xanthene. It is used as a bidentate ligand and is noteworthy for having a particularly wide bite angle. Such ligands are useful in the hydroformylation of alkenes.

Reactions

Ligand used for the hydroformylation of alkenes. Ligand used in the intermolecular coupling of amides and hydrazones with aryl halides. Ligand used in the intermolecular coupling of amides with aryl halides or triflates. Ligand used in the coupling of heteroarylamines and aryl halides. Ligand used in the hydrophosphinylation of alkenes and alkynes. Ligand used for the Au(I)-catalyzed dehydrogenative silation of alcohols. Ligand used for the sulfinylation of aryl iodides. Ligand used for the Pd-catalyzed carbonylation reaction of aryl bromides and amines. Ligand used for the Ni-cataltzed alkynylcyanation of alkynes. Ligand used for the Pd-catalyzed N-arylation of 3-amino-1H-pyrazole. Ligand used for the Rh-catalyzed dehydrogenation borylation of cyclic alkenes. Ligand used for the Pd-catalyzed intermolecular coupling of H-Phosphonate diesters with benzyl halides. Ligand used for the Pd-catalyzed one pot synthesis of 4-aryl-1H-1,2,3-triazoles. Ligand used for the Pd-catalyzed intermolecular addition of formamides to alkynes. Ligand used for the Pd-catalyzed decarboxylative couplings of 2-(2-azaaryl)acetates with aryl halides and triflates. Ligand used for the Pd-catalyzed benzylic arylation of 2-methyl azaarenes Ligand used for the Pd-catalyzed α-arylation of heteroaromatic ketones. Ligand used for the Pd-catalyzed direct alkynlation of both azoles and azolines. Ligand used for the Cu-catalyzed intermolecular coupling of alkynes with aryl iodides. Ligand used for the Pd-catalyzed ene-type reaction of aldehydes with 1,3-diene. Ligand used for the Ru-catalyzed intermolecular addition of 2-phenylbenzoic acid onto unactivated olefins. Ligand used for the Pd/Cu-catalyzed direct arylation of heteroarenes. Ligand used for the Pd-catalyzed reaction of propargyl-substituted malonate esters with aryl halides. Ligand used for the Pd-catalyzed decarboxylative coupling of tertiary cyanoacetate salts with aryl halides and triflates. Ligand used for the Pd-catalyzed hydroesterification of alkynes. Ligand used for the Cu-catalyzed arylation of arylboronic acids with aldehydes. Ligand used for the Ru-catalyzed oxidative synthesis of heterocycles from alcohols. Ligand used for the Rh-catalyzed borylation of nitriles. Ligand used in the Pd-catalyzed α-arylation of benzylic phosphine oxides. Ligand used in the Pd-Catalyzed Oxidative Coupling of Enamides and Alkynes. Ligand used in the Pd-catalyzed difunctionalization of enol ethers to amino acetals with aminals and alcohols. Ligand used in the Pd-catalyzed alkoxycarbonylation of α-chloroketones.

InChI:InChI=1/C39H32OP2/c1-39(2)33-25-15-27-35(41(29-17-7-3-8-18-29)30-19-9-4-10-20-30)37(33)40-38-34(39)26-16-28-36(38)42(31-21-11-5-12-22-31)32-23-13-6-14-24-32/h3-28H,1-2H3

Synthetic route

9,9-dimethyl-4,6-bis(diphenyloxyphosphino)xanthene → 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8)

Conditions	Yield
With tributylphosphine; iodine In tetrahydrofuran; acetonitrile at 20℃; for 0.166667h; Inert atmosphere;	95%

acetone (67-64-1) + bis[2-(diphenylphosphino)phenyl] ether (166330-10-5) → 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8)

Conditions	Yield
With trifluorormethanesulfonic acid In toluene at 200℃; for 16h; Temperature; Inert atmosphere;	95%

1,1'-(9,9-dimethyl-9H-xanthene-4,5-diyl)bis-1,1-diphenylphosphine oxide (808142-24-7) → 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8)

Conditions	Yield
With bis(2-chlorophenyl)borinic acid; phenylsilane In toluene at 80℃; for 18h; Inert atmosphere;	89%
With 1,3-diphenyl-disiloxane In toluene at 110℃; Sealed tube; chemoselective reaction;	79%

9,9-dimethylxanthene (19814-75-6) + chloro-diphenylphosphine (1079-66-9) → 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8)

Conditions	Yield
Stage #1: 9,9-dimethylxanthene With N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium In tert-butyl methyl ether; cyclohexane at 6 - 10℃; Stage #2: In cyclohexane; water at 20℃; for 14h; Stage #3: chloro-diphenylphosphine In cyclohexane; water at 10 - 20℃; for 5.16667h;	88%
Stage #1: 9,9-dimethylxanthene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane at -78 - 25℃; for 17h; Stage #2: chloro-diphenylphosphine In hexane at 25℃; for 16h; Cooling with ice;	84%
Stage #1: 9,9-dimethylxanthene With N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium In tert-butyl methyl ether; cyclohexane at 10 - 20℃; for 16h; Stage #2: chloro-diphenylphosphine In cyclohexane; water at 20℃; for 5.75h;	77%

9,9-dimethylxanthene (19814-75-6) + diphenylphosphonium chloride → 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8)

Conditions	Yield
Stage #1: 9,9-dimethylxanthene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane at -78 - 25℃; for 17h; Stage #2: diphenylphosphonium chloride In hexane at 25℃; for 16h; Cooling with ice;	84%

9,9-dimethylxanthene (19814-75-6) → 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8)

Conditions	Yield
Stage #1: 9,9-dimethylxanthene With bis 1,2-(dimethylamino)ethylene; sec.-butyllithium In tert-butyl methyl ether at 10 - 20℃; for 16h; Stage #2: With chloro-diphenylphosphine at 20℃; for 6.25h;

4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → 1,1'-(9,9-dimethyl-9H-xanthene-4,5-diyl)bis-1,1-diphenylphosphine oxide (808142-24-7)

Conditions	Yield
With dihydrogen peroxide In dichloromethane at 0℃; for 2h;	100%
With dihydrogen peroxide In dichloromethane; water at 0℃; for 4h;	99%
With dihydrogen peroxide In 1,4-dioxane; water for 2h;	95%

dichlorotetrakis(triphenylphosphine)ruthenium(II) (15555-77-8, 86470-43-1) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → RuCl2(PPh3)(Xantphos) (1579977-69-7)

Conditions	Yield
In (2)H8-toluene for 3h; Inert atmosphere; Schlenk technique; Reflux;	100%
In (2)H8-toluene for 5h; Inert atmosphere; Schlenk technique; Reflux;	100%

iron(dichloride)*1.5(tetrahydrofuran) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → FeCl2(Xantphos)

Conditions	Yield
In toluene at 60℃; for 4h;	100%

copper diacetate (142-71-2) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → C43H38CuO5P2

Conditions	Yield
In tetrahydrofuran	100%

copper (I) acetate (598-54-9, 142-71-2, 4180-12-5, 24381-58-6, 66760-61-0, 66760-62-1) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → Cu(OAc)(Xantphos)

Conditions	Yield
In tetrahydrofuran	100%
In tetrahydrofuran at 20℃; for 4h; Schlenk technique; Inert atmosphere; Glovebox;	74%

tetrakis(acetonitrile)copper(I)tetrafluoroborate + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → [Cu(NCMe)2(Xantphos)]BF4

Conditions	Yield
In dichloromethane for 2h;	100%

copper(l) iodide (7681-65-4) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → Cu[9,9-dimethyl-4,5-bis(diphenylphosphine)xanthene]I (1218788-80-7)

Conditions	Yield
In acetonitrile	99%
In CH2Cl2	99%
In acetonitrile at 50℃; for 2h;	99%

tetrakis(acetonitrile)copper(I)tetrafluoroborate + 2.9-dimethyl-1,10-phenanthroline (484-11-7) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → [Cu(2,9-dimethyl-1,10-phenanthroline)(4,5-bis(diphenylphosphino)-9,9-dimethylxanthene)](BF4) (1251536-86-3)

Conditions	Yield
Stage #1: tetrakis(acetonitrile)copper(I)tetrafluoroborate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In dichloromethane at 20℃; for 1h; Stage #2: 2.9-dimethyl-1,10-phenanthroline In dichloromethane for 1h;	99%
In dichloromethane Cu complex added to a soln. of (CH3)2C13H6O(P(C6H5)2)2, C12H6N2(CH3)2 added; pptd. with Et2O, filtered, dried (vac.);	70%
Stage #1: tetrakis(acetonitrile)copper(I)tetrafluoroborate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In dichloromethane at 20℃; for 1h; Stage #2: 2.9-dimethyl-1,10-phenanthroline In dichloromethane at 20℃; for 1h;	46%

C24H26N2O6Pd2S2 + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → C51H45NO4P2PdS

Conditions	Yield
In tetrahydrofuran at 20℃; for 1.5h; Inert atmosphere;	99%

tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → [Cu(4,5-bis(diphenylphosphino)-9,9-dimethylxanthene)(CH3CN)2]PF6

Conditions	Yield
In dichloromethane at 20℃; for 1h;	99%
Inert atmosphere; Schlenk technique;
In dichloromethane at 20℃; for 0.25h; Darkness;

tetrakis(acetonitrile)copper(I)tetrafluoroborate + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) + 4,4'-di-tert-butyl-2,2'-bipyridine (72914-19-3) → C57H56CuN2OP2(1+)*BF4(1-)

Conditions	Yield
Stage #1: tetrakis(acetonitrile)copper(I)tetrafluoroborate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In dichloromethane at 20℃; for 1h; Stage #2: 4,4'-di-tert-butyl-2,2'-bipyridine In dichloromethane at 20℃; for 1h;	99%

tetrakis(acetonitrile)copper(I)tetrafluoroborate + 4,4'-Dimethoxy-2,2'-bipyridin (17217-57-1) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → C51H44CuN2O3P2(1+)*BF4(1-)

Conditions	Yield
Stage #1: tetrakis(acetonitrile)copper(I)tetrafluoroborate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In dichloromethane at 20℃; for 1h; Stage #2: 4,4'-Dimethoxy-2,2'-bipyridin In dichloromethane at 20℃; for 1h;	99%

dichloro bis(acetonitrile) palladium(II) (21264-30-2, 90243-59-7, 14592-56-4) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → dichloro[9,9-dimethyl-4,5- bis(diphenylphosphino)xanthene]palladium (II) (205319-10-4)

Conditions	Yield
In benzene at 110℃; for 48h; Schlenk technique; Reflux; Inert atmosphere;	98%
In benzene at 110℃; for 48h; Inert atmosphere; Schlenk technique;	98%
In benzene at 110℃; for 48h; Schlenk technique; Inert atmosphere;

tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + 4,4'-bis(4-chlorophenyl)-6,6'-dimethyl-2,2'-bipyridine (517919-24-3) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → C63H50Cl2CuN2OP2(1+)*F6P(1-)

Conditions	Yield
In dichloromethane at 20℃; for 1.5h;	98%

tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + 4,4’-di(4-bromophenyl)-6,6’-dimethyl-2,2’-bipyridine (1427205-00-2) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → C63H50Br2CuN2OP2(1+)*F6P(1-)

Conditions	Yield
In dichloromethane at 20℃; for 1.5h;	98%

tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) + 6-phenyloxy-2,2'-bipyridine → C55H44CuN2O2P2(1+)*F6P(1-)

Conditions	Yield
Stage #1: tetrakis(actonitrile)copper(I) hexafluorophosphate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In dichloromethane at 20℃; for 0.5h; Stage #2: 6-phenyloxy-2,2'-bipyridine In dichloromethane at 20℃; for 1h;	98%

tris(dibenzylideneacetone)dipalladium(0) chloroform complex (52522-40-4) + 4-methyl-benzoyl chloride (874-60-2) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → (Xantphos)Pd(CO(C6H4CH3))(Cl)

Conditions	Yield
In benzene at 20℃; for 18h; Glovebox; Inert atmosphere;	98%

tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + C20H20N2 + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → C59H52CuN2OP2(1+)*F6P(1-)

Conditions	Yield
Stage #1: C20H20N2; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene In dichloromethane at 20℃; for 0.5h; Stage #2: tetrakis(actonitrile)copper(I) hexafluorophosphate In dichloromethane at 20℃; for 1h;	98%

dichlorotetrakis(dimethylsulfoxide)ruthenium(II) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → Ru(P,O,P-xantphos)(S-dmso)Cl2 (1313371-86-6)

Conditions	Yield
In dichloromethane mixt. of Ru complex and xantphos (1 equiv.) in CH2Cl2 refluxed; evapn. under vac., washed with Et2O, recrystn. from CH2Cl2; elem. anal.;	97.8%

dichloro( 1,5-cyclooctadiene)platinum(ll) (12080-32-9) + dichloromethane (75-09-2) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → Pt(xantphos)Cl2*(dichloromethane)

Conditions	Yield
In chloroform Pt complex and ligand dissolved in CHCl3, stirred at room temp. for 1.5 h; evapd. (vac.), washed (hexane/CH2Cl2), dried; elem. anal.;	97%

di(rhodium)tetracarbonyl dichloride + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → [Rh(CO)(4,5-bis(diphenylphosphino)-9,9'-dimethylxanthene)Cl] (1241951-62-1)

Conditions	Yield
In ethanol using Schlenk techniques; addn. of xantphos to stirred soln. of (RhCl(CO)2)2 in EtOH, pptn., stirring for 10 min; collection on a sinter, washing with ice-cold EtOH and Et2O;	97%

tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + 2,3,5,6-tetrakis(2-pyridyl)pyrazine (25005-97-4) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → [Cu2(2,3,5,6-tetra(pyridin-2-yl)pyrazine)(4,5-bis(diphenylphosphino)-9,9-dimethylxanthene)2][PF6]2

Conditions	Yield
Stage #1: tetrakis(actonitrile)copper(I) hexafluorophosphate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In dichloromethane for 2h; Stage #2: 2,3,5,6-tetrakis(2-pyridyl)pyrazine In dichloromethane for 2h;	97%

tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) + 6-eethoxy-2,2'-bipyridine (54015-97-3) → C51H44CuN2O2P2(1+)*F6P(1-)

Conditions	Yield
Stage #1: tetrakis(actonitrile)copper(I) hexafluorophosphate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In dichloromethane at 20℃; for 0.5h; Stage #2: 6-eethoxy-2,2'-bipyridine In dichloromethane at 20℃; for 1h;	97%

bis[(trimethylsilyl)methyl](1,5-cyclooctadiene)palladium(II) (225931-80-6) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → C47H54OP2PdSi2

Conditions	Yield
In tetrahydrofuran for 0.0833333h; Solvent; Temperature; Milling;	97%

tris-(dibenzylideneacetone)dipalladium(0) (52409-22-0, 51364-51-3) + ethyl 4-bromo-1-ethyl-5-nitro-1H-pyrrole-2-carboxylate + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → C48H43BrN2O5P2Pd

Conditions	Yield
In benzene-d6 at 20℃; for 24h;	96%

6-(naphthalen-2-yl)-2,2′-bipyridine + tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → [Cu(2-Naphbpy)(xantphos)][PF6]

Conditions	Yield
In dichloromethane at 20℃; for 2h;	96%

tetrakis(actonitrile)copper(I) hexafluorophosphate (64443-05-6) + 6,6'-Dibromo-2,2'-bipyridine (49669-22-9) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → [Cu(xantphos)(6,6′-dibromo-2,2′-bipyridine)][PF6]

Conditions	Yield
In dichloromethane for 2h;	96%

N,N'-ethylenethiourea (96-45-7) + copper(l) iodide (7681-65-4) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → iodo(4,5-bis(diphenylphosphano)-9,9-dimethylxanthene)(imidazolidine-2-thione)copper(I) (905816-32-2)

Conditions	Yield
In acetonitrile diphosphine added to suspn. of CuI in dry MeCN; stirred at 50°C for 2 h; soln. of thione in small amt. of MeOH added; heated under refluxfor 2 h; soln. filtered; left to evapd. at ambient temp. for several d; filtered;solid dried in vac.; elem. anal.;	95%

tris(triphenylphosphine)ruthenium(II) chloride (15529-49-4, 41756-81-4) + 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (161265-03-8) → RuCl2(xantphos)PPh3

Conditions	Yield
In chloroform for 3h; Inert atmosphere; Reflux;	95%

Upstream product

• 19814-75-6 9,9-dimethylxanthene 
• 1079-66-9 chloro-diphenylphosphine 
• 67-64-1 acetone 
• 166330-10-5 bis[2-(diphenylphosphino)phenyl] ether 
• 14243-64-2 (triphenylphosphine)gold(I) chloride 
• 855-38-9 P(p-CH₃OC₆H₄)3 
• 808142-24-7 1,1'-(9,9-dimethyl-9H-xanthene-4,5-diyl)bis-1,1-diphenylphosphine oxide 

Downstream Products

• 6631-37-4 2-(phenylamino)pyridine 
• 227805-75-6 2-(3',5'-dimethylphenylamino)pyridine 
• 4300-33-8 N-(4-methylphenyl)-N'-phenylurea 
• 102-07-8 bis(diphenyl)urea 
• 13140-49-3 N-(2-methylphenyl)-N'-phenylurea 
• 13285-01-3 2-(phenylsulfinyl)naphthalene 
• 7417-81-4 benzyl phenyl sulfoxide 
• 127594-87-0 benzyl 4-methoxyphenyl sulfoxide 
• 879689-49-3 (C₃H₅)Pd(4,5-bis(diphenylphosphino)-9,9-dimethylxanthene)BF₄ 
• 261926-98-1 (xantphos)Rh(CO)2H 
• 439587-87-8 (Xantphos)Pd(4-cyanophenyl)I 
• 166330-14-9 Rh(H)(⁽¹³⁾CO)(P(C₆H₅)3)(((C₆H₅)2PC₆H₃)2OC(CH₃)2) 
• 166330-13-8 Rh(H)(CO)(P(C₆H₅)3)(((C₆H₅)2PC₆H₃)2OC(CH₃)2) 
• 905816-37-7 bromo(4,5-bis(diphenylphosphano)-9,9-dimethylxanthene)(tetrahydropyrimidine-2-thione)copper(I) 

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A phosphine oxide (PO) host containing planar xanthene (XantPO) was chosen to investigate the influence of the structure of chromophores on the properties of the host. Owing to the multi-insulating linkages, the planar structure of XantPO also realizes high first triplet excited level (T1) of 2.92 eV, and supports excellent morphological and thermal stability with the high temperature of glass transition (Tg, 135°C) and temperature of decomposition (Td, 369°C). On the basis of theoretical simulation and electrochemical analysis and bright and efficient green and blue phosphorescent organic light-emitting diodes (PHOLEDs) of XantPO, it indicated that the configuration of chromophores in hosts can remarkably influence the device performance even if their optical properties were very approximate.

A new series of tetrahedral Co(II) complexes [CoLX2] (X = NCS, Cl, Br, I) manifesting single-ion magnet features

A series of tetrahedral CoII complexes [CoLX2] (X = NCS (1), Cl (2), Br (3) and I (4); L = 9,9-dimethyl-4,5-bis(diphenylphosphino) xanthene) based on a P-donor ligand has been prepared to investigate the influence of terminal ligand field strength on the anisotropy of CoII single-ion magnets. It has been observed that heavier and softer terminal ligands are able to decrease the anisotropy of the tetrahedral CoII centers. Thorough analyses of experimental and theoretical studies show that all complexes have an easy-axis type magnetic anisotropy and slow relaxation behaviors of tetrahedral CoII centers. Detailed ab initio theory studies disclose that the changes in the ligand field strength imposed by the terminal ligands result in modifying the single ion anisotropy (D) of polyhedra 1-4. Furthermore, the isostructural ZnII analogue (5) has been prepared to examine the influence of dipolar interactions between adjacent CoII centres and magnetic dilution experiments were performed.

Novel phosphine oxide bidentate neutral manganese complex as well as preparation method and application thereof

The invention provides a novel phosphine oxide bidentate neutral manganese complex as well as a preparation method and application thereof. A light-emitting manganese complex is formed through the action of a bidentate phosphine oxide bond and manganese metal, and the ligand can change two benzene rings on P into cyclohexyl to form another novel structure; the structures can be used for carrying out optical regulation and control on the metal manganese complex by adjusting a ligand field and a ligand proportion; because the metal manganese has the advantages of low price, low cost, simple synthesis and the like, the neutral manganese complex has wide application and can be applied to the fields of anti-counterfeiting printing, illumination display and the like.

Heteronuclear bimetallic complexes, preparation method thereof and application of complexes in preparation of bimodal-distribution olefin polymers

The invention relates to the field of catalysts for olefin polymerization, in particular to heteronuclear bimetallic complexes, a preparation method thereof and application of the complexes in preparation of bimodal-distribution olefin polymers. The heteronuclear bimetallic complexes are complexes shown in a formula (1). The heteronuclear bimetallic complexes exhibit high catalytic activity in catalysis of olefin polymerization, and can be used as a main catalyst for polymerization, and when the heteronuclear bimetallic complexes are used as a main catalyst, only one catalyst system is used for preparing the olefin polymers with distinct bimodal distribution in a singular reactor.