64466-40-6Relevant academic research and scientific papers
New aspect on di-μ-[bis(diphenylphosphino)methane]dichlorotrigold(I) chloride, including its crystal and molecular structure
Lin, Ivan J. B.,Hwang,Feng, Da-Fa,Cheng,Wang, Yu
, p. 3467 - 3472 (2008/10/08)
The reaction of H AuCl4-4H2O with dppm (PPh2CH2PPh2) in ethanol produces [Au3(dppm)2Cl2]Cl,3. This compound equilibrates with Au2(dppm)Cl2, 1, and Au2(dppm)2 Cl2, 2, in solution. 31P NMR studies at various temperatures suggest that the exchange rate between compounds 1 and 3 is faster than that between compounds 2 and 3. The free chloride anion in 3 is responsible for these exchanges. The strong emission of 3 in solid is attributed to the short Au?Au distances. Crystal structure data for compound 3-EtOH: space group C2/c, with a = 14.184(3) ?, b = 18.556(6) ?, c = 20.597(6) ?, β = 97.56(2)°, Z = 4, and V = 5285(3) ?3.
Heterodinuclear bis(diphenylphosphino)methane-bridged molybdenum (d6)-gold (d10) complexes: Metal-metal interactions and ligand oxidation
Balch, Alan L.,Noll, Bruce C.,Olmstead, Marilyn M.,Toronto, Dawn V.
, p. 5226 - 5230 (2008/10/08)
Reinvestigation of the reaction between Ph3PAuCl and mer-Mo(dpm-P,P′)(dpm-P)(CO)3 (dpm = bis(diphenylphosphino)methane) has shown it to be solvent dependent. The reaction in benzene yields orange {(OC)3ClMo-(μ-dpm)2Au} as reported before. Crystallization from benzene/diethyl ether gives {(OC)3ClMo(μ-dpm)2Au}·2-(C2H 5)2O, which forms in the triclinic space group P1 with a = 13.699 (3) A?, b = 14.159 (4) A?, c = 16.187 (3) A?, α = 90.84 (2)°, β = 112.11 (2)°, and γ = 103.34 (2)° at 130 K with Z = 2. Refinement of 9985 reflections and 658 parameters yielded R = 0.051 and Rw = 0.049. The structure consists of trans-P2Mo(CO)Cl and trans-P2An units with a long, nonbonded Mo?Au separation of 3.302 (1) A?. In dichloromethane solution the same reaction produces yellow [(dpm-O)2Mo(CO)2AuPPh3](PF6) after the addition of ammonium hexafluorophosphate. Some gold metal precipitates and the dpm ligand is oxidized to Ph2P(O)CH2PPh2 (dpm-O). [(dpm-O)2Mo-(CO)2AuPPh3](PF 6)·CH2Cl2·0.25CH 3OH·0.25H2O crystallizes in the monoclinic space group P21/c with a = 27.489 (8) A?, b = 24.472 (5) A?, c = 22.085 (11) A?, and β = 102.07 (3)° at 130 K with Z = 8. Refinement of 9202 reflections and 576 parameters yielded R = 0.092 and Rw = 0.091. The structure consists of a seven-coordinate molybdenum that is coordinated by two chelating dpm-O ligands, two terminal carbon monoxide ligands, and the AuPPh3 unit. The Mo-Au distances (2.691 (3), 2.709 (3) A?) in the two independent catioas found in the asymmetric unit are consistent with the presence of a single bond between these atoms.
Photoinduced C-C Bond Formation from Alkyl Halides catalysed by Luminescent Dinuclear Gold(I) and Copper(I) Complexes
Li, Dan,Che, Chi-Ming,Kwong, Hoi-Lun,Yam, Vivian Wing-Wah
, p. 3325 - 3330 (2007/10/02)
The photoluminescent properties of (2+) , (2+) and (2+) have been investigated.Irradiation of a degassed acetonitrile solution of benzyl chloride or 1-bromopentane in the presence of a sacrificial electron donor such as triethylamine and a catalytic amount of (2+) led to the formation of bibenzyl or n-decane.Similar photoreactions with much lower yields of the C-C bond coupling products have also been observed with (2+) and (2+) as catalysts.The mechanism of the photoreaction between alkyl halides and (2+) has been investigated by steady-state photolysis, Stern-Volmer quenching and flash-photolysis studies.
Binuclear and trinuclear gold-platinum complexes: The crystal structures of [PtCl(CE≡C-t-Bu)(μ-dppm)2Au][Cl]·CH 2Cl2 and [Pt(C≡C-t-Bu)2{(μ-dppm)AuCl2] (dppm = Ph2PCH2PPh2)
Manojlovi?-Muir, Ljubica,Henderson, Allan N.,Treurnicht, Ilse,Puddephatt, Richard J.
, p. 2055 - 2061 (2008/10/08)
Reactions of trans-[PtCl2(SMe2)2] with 1 or 2 equiv of AuC≡C-t-Bu give unstable complexes formulated as [PtCl(C≡C-t-Bu)(SMe2)2(AuCl)] and [Pt(C≡C-t-Bu)2(SMe2)2(AuCl)2] with the AuCl units probably bonded to the alkynylplatinum groups. Further reaction of these complexes with dppm, Ph2PCH2PPh2, gave the binuclear trans-[PtCl(C≡C-t-Bu)(μ-dppm)2Au]+Cl- and trans-[Pt(C≡C-t-Bu)2(μ-dppm)2Au] +Cl- and the trinuclear trans-[Pt(C≡C-t-Bu)2{(μ-dppm)AuCl}2]. A number of other routes to these and related complexes have been developed. The structures of trans-[PtCl(C≡C-t-Bu)(μ-dppm)2Au][Cl]·CH 2Cl2 [space group P21/a, Z = 4, a = 23.144 (5) A?, b = 23.752 (3) A?, c = 10.474 (4) A?, β = 99.15 (2)°, R = 0.034] and of trans-[Pt(C≡C-t-Bu)2{(μ-dppm)AuCl}2] [space group P1, Z = 2, a = 9.703 (3) A?, b = 14.362 (1) A?, c = 23.646 (3) A?, α = 75.805 (8)°, β = 83.87 (2)°, γ = 70.09 (2) A?, R = 0.027] were determined by X-ray crystallography.
