72476-68-7

Basic information

• Product Name: dppm(AuBr)2
• Synonyms: [(Diphenylphosphino)methyl] (diphenyl)phosphine compound with bromogold (1:2);Bis(bromogold(I)) bis(diphenylphosphino)methane;Bis(diphenylphosphino)methane bis(gold(I) bromide);dppm(AuBr)2
• CAS NO: 72476-68-7
• Molecular Formula: C₂₅H₂₂Au₂Br₂P₂
• Molecular Weight: 938.130802
• Mol File: 72476-68-7.mol
• Article Data: 4

Chemical Properties

• Melting Point: 275-278°C
• Appearance: /
• CAS DataBase Reference: dppm(AuBr)2(CAS DataBase Reference)
• NIST Chemistry Reference: dppm(AuBr)2(72476-68-7)
• EPA Substance Registry System: dppm(AuBr)2(72476-68-7)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 72476-68-7(Hazardous Substances Data)

Upstream product

• 15189-51-2 sodium tetrachloroaurate(III) 
• 2071-20-7 bis-diphenylphosphinomethane 
• 7550-35-8 lithium bromide 
• 37095-27-5 (bis(diphenylphosphino)methane)bis(chlorogold(I)) 
• 7558-02-3 potassium bromide 
• 1190715-84-4 [Au(III)2(bis(diphenylphosphino)methane)Br₆] 

Downstream Products

• 164363-47-7 [Au3Br2(μ-DPPM)2]ClO4 
• 178314-61-9 [Au2(μ-8-thiotheophyllinate(2-))(μ-bis(diphenylphosphino)methane)] 
• 2071-21-8 bis(diphenylphosphoryl)methane 

Relevant articles and documents

Halogen photoreductive elimination from gold(III) centers

Monomeric complexes of the type Au III (PR 3 )X 3 and bimetallic complexes of the type Au 2 I,III [μCH 2 (R 2 P) 2 ]X 4 and Au 2 III,III [μ-CH 2 (R 2 P) 2 ]X 6 (R = Ph, Cy, X = Cl - , Br - ) undergo facile photoelimination of halogen. M-X bond activation and halogen elimination is achieved upon LMCT excitation of solutions of Au III complexes in the presence of olefin chemical traps. As opposed to the typical one-electron redox transformations of LMCT photochemistry, the LMCT photochemistry of the Au III centers allows for theunprecedented (i) two-electron photoelimination of X 2 from a monomeric center and (ii) four-electron photoelimination of X 2 from a bimetalllic center. The quantum yields for X 2 photoproduction, in general, are between 10percent and 20percent for all species, showing only minimal dependence on the identity of the ligands about gold, or the nuclearity of the complex. Efficient X 2 photoelimination is observed in the absence of a chemical trap, providing a rare example of authentic, trap-free halogen elimination from a transitionmetal center.

Bidentate Ligand Transfer Reactions between Gold(I) Complexes

Reactions of the cationic derivative 2 with (1-) (X = Cl or Br) in a 1:1 or a 1:2 molar ratio afforded tri- or di-nuclear derivatives, respectively.Neutral complexes or n(μ-L-L)n> react with the cationic 2>ClO4 in 1:2 molar ratio, to give open-ring complexes ClO4.Reactions of the neutral complexes (R = Me or CH2Ph) with cationic 2 (P-P = Ph2PCH2PPh2 or Ph2PCH2CH2PPh2) led to the heterobridged dinuclear complexes ClO4.All these processes proceed via donor-acceptor intermediates, with bidentate ligand transfer.