14692-78-5Relevant articles and documents
Syntheses of gold-manganese and gold-rhenium clusters, and + (M = Mn, Re), and the crystal structure of BF4
Nicholson, Brian K.,Bruce, Michael I.,Shawkataly, Omar bin,Tiekink, Edward R. T.
, p. 411 - 418 (2007/10/02)
The specific additions of one, three or four Ph3PAu groups to - (M = Mn, Re) are described.Thus - in THF reacts with BF4 to give BF4.An X-ray crystal structure of the M = Mn example shows the cation to have a trigonal bipyramidal Au4Mn core with the Mn in an equatorial site.The previously known neutral (Ph3PAu)3M(CO)4 clusters are formed by addition of two Ph3PAu groups, using the mixed reagent BF4/, to Ph3PAuM(CO)5, which itself is readily prepared from - and Ph3PAuCl.
A Radical-Chain Mechanism for Dinuclear C-H Bond Formation
Edidin, Robin T.,Norton, Jack R.
, p. 948 - 953 (2007/10/02)
Both the formation of (Ph3PAu)2Os(CO)4 from Ph3PAuCH3 and H2Os(CO)4 and the formation of (Ph3PAu)Mn(CO)5 from Ph3PAuCH3 and HMn(CO)5 occur by radical-chain mechanisms.The chain carriers are .Mn(CO)5 and .Os(H)(CO)4, respectively, arising from hydrogen atom abstraction from the initial hydrides.Photolysis of a small amount of the appropriate dimer (Mn2(CO)10 or H2Os2(CO)8) generates the chain carrier and thus initiates the reaction.No such reaction occurs between Ph3PAuCH3 and HRe(CO)5, even in the presence of substantial amounts of .Re(CO)5.The formation of H2Os(CO)3PPh3 from Ph3P and H2Os(CO)4 also occurs by a radical-chain mechanism with .Os(H)(CO)4 as the chain carrier, and the reactions of Ph3PAuCH3 and Ph3P with H2Os(CO)4 can be simultaneously initiated.
