Hypercoordinated gold (i) compounds |
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| Authors: | T V Baukova L G Kuz'mina A V Churakov N A Oleinikova P V Petrovskii |
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| Institution: | (1) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813 Moscow, Russian Federation;(2) N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 117907 Moscow, Russian Federation |
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| Abstract: | The reaction of O(AuPPh3)3]+BF4
− with a Li, K derivative ofo-cresol followed by the interaction of the reaction product with CO2 gave (triphenylphosphine)gold acetate. The reaction of ClAuPPh3 witho-LiC6H4SLi afforded (triphenylphosphine)gold thiophenoxide. According to the data of X-ray structural analysis, the latter occurs
as a dimer formed through an intermolecular secondary Au…Au bond. The reaction of this complex with diazomethane was accompanied
by insertion of carbene into the Au−S bond to form a new gold complex, PhSCH2AuPPh3. The reactions with PPh3Au+BF4
− or HBF4 yielded a new tetranuclear gold thiocluster, {PhS(AuPPh3)2]2+(BF4
−)}2, which involves Au…Au bonds that differ in strength. The structures of the compounds obtained were established by X-ray structural
analysis1H and31P NMR spectroscopy, and FAB mass spectrometry.
For Part 4, seeIzv. Akad. Nauk, Ser. Khim., 1997, 2244 Russ. Chem. Bull., 1997,46 2127 (Engl. Transl)].
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2 pp. 350–355, February, 1998. |
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| Keywords: | synthesis hypercoordinated organogold(r) compounds (triphenylphosphine)gold thiophenoxide tetranuclear gold thiocluster secondary bonds X-ray diffraction study |
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