|
|||||
|
|
Synthesis, structure and reactivity of [(CF3)3GePt(PPh3)2]2Hg |
|
| Authors: | M N Bochkarev N L Ermolaev L N Zakharov Yu N Saf'Yanov G A Razuvaev |
| Institution: | Institute of Chemistry, U.S.S.R. Academy of Sciences, Gorky U.S.S.R. A.N. Nesmeyanov Institute of Organoelement Compounds, U.S.S.R. Academy of Sciences, Moscow U.S.S.R. |
| Abstract: | The reaction of Pt(PPh3)n (n = 3 or 4) with (CF3)3Ge]2Hg or (CF3)3GeHgPt(PPh3)2Ge(CF3)3 (I) gives a stable diplatinum complex (CF3)3GePt(PPh3)2]2Hg (II). X-Ray analysis has established that compound II contains a Ge---Pt---Hg---Pt---Ge chain of C2 symmetry. Both of the Pt atoms have distorted square-planar coordinations. The bond lengths are: Pt---Hg, 2.630(2) and 2.665(2) Å; Ge---Pt, 2.410(4) and 2.407(4) Å. Compound II reacts with dihydrogen in THF solution under mild conditions to give mercury and the hydride (CF3)3GePt(PPh3)2H. On interaction of II with R2Hg organomercurials (R = Cl, Et, GeEt3, Ge(CF3)3, Ge(C6F5)3) an unknown reaction takes place: Pt(PPh3)2 moieties migrate from the polymetallic grouping into the substrate with the formation of the corresponding RHgPt(PPh3)2R complexes or their demercuration products, R2Pt(PPh3);, (R = Cl, Et). The latter react further with complex I formed in the first step of the process to give Hg and (CF3)3GePt(PPh3)2R. The reaction schemes are discussed. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |