82307-36-6Relevant academic research and scientific papers
A route to trinuclear platinum-gold clusters
Arsenault, G. J.,Puddephatt, R. J.
, p. 1800 - 1806 (2007/10/02)
New A-frame cluster complexes have been prepared by addition of electrophilic gold fragments to the Pt-Pt bond of , dppm = Ph2PCH2PPh2.For example, gave and gave NO3.The complexes reacted with to give BF4 when n = 1 or 2, but the bridged bis(A-frame) cluster complex 2CH2>(BF4)2 when n = 3.In contrast, CuCl reacted with to give .Attempts to synthesize A-frame clusters containing Pt2Ag, Pt2Cu, Pd2Au, or PdPtAu units were unsuccessful, and it is concluded that these units are considerably weaker than the analogous 3-center 2-electron bond of the Pt2Au unit.The AuCl unit is displaced from on reaction with diazomethane, with formation of .Key words: platinum, gold, cluster, copper, silver.
Synthesis and Reactions of the Heterobimetallic Complex
Pringle, Paul G.,Shaw, Bernard L.
, p. 889 - 896 (2007/10/02)
New methods of preparing (1b) (dppm = Ph2PCH2PPh2) are described, such as reduction of with zinc dust, formic acid, or hydrazine.Treatment of 3-allyl)2> with an excess of dppm gives pure (1b) readily, albeit in only 45 percent yield. 3-C3H5)ClPd(μ-dppm)PdCl(η3-C3H5)> is also described.The best route to (1b) is to treat and dppm with giving yields of 80-90 percent.Similar treatment of and dppm with t)2> gives (1a), often contaminated, however, with ca. 10 percent of .Treatment of dppm and with t)2> gives the previously unknown heterobimetallic complex (1c) in excellent yield (83-92 percent) and purity.The corresponding dibromide, di-iodide, and dithiocyanate were prepared from (1c) by metathesis.Complex (1c) readily reacts with some small molecules, SO2, CO, MeO2CCCCO2Me or CS2, to give 'A-frames' , , , and respectively.The addition of SO2, CO, or CS2 is reversible and SO2 promotes or catalyses the displacement of CO.Hydrogen-1, 31P-, and 195Pt n.m.r. data are given and discussed as are some i.r. data.
