Syntheses, structures and reactivities of [Os6Pd(CO)18(bipy)] and [{(bipy)Pd}20s3(CO)12]: Crystal and molecular structures of [{(bipy)Pd}2(μ-H)(μ-CO)][H3Os4(CO)12] and [(C4H9)4N]2[Pd2I6]

Autor: Siu Ming Lee, Suzanna Chan, Wing Tak Wong, Zhenyang Lin
Rok vydání: 1996
Předmět:
Zdroj: Journal of Organometallic Chemistry. 510:219-231
ISSN: 0022-328X
DOI: 10.1016/0022-328x(95)05901-z
Popis: The complex [(bipy)Pd(C02Me)2] reacts with [Os3(CO)10(NCMe)2] in a 1 : 1 molar ratio to give [Os6Pd(CO)18(bipy)] (1) with a moderate yield, and the crystal structure of 1 is presented. Complex 1 is separately treated with an excess of iodine and tetra-n-butylammonium iodide, giving0 [Os6(CO)18] and [(nBu)4N]2[Pd2I6] (2) respectively. Complex 2 is characterized by X-ray crystallography. The cyclic voltammogram of 1 reveals an irreversible oxidation at a potential of around 0.75 V and no reduction wave is observed. On the contrary, the reaction of [(bipy)Pd(CO2Me)2] with [H2OS3(CO)10] in a 1:2 molar ratio gives [{(bipy)Pd)2}Os3(CO)12) (3) with a 25% yield. The X-ray crystallographic study of 3 reveals a stacking situation of the molecules along the c axis. Treatment of 3 with an excess of chloride salt leads to the formation of the cationic species [{(bipy)Pd}2(μ-H)(μ-CO)]+ (4) the [H3Os4(CO)12]− salt of which is isolated. Again, a stacking of the dinuclear cations is observed from the X-ray structural analysis of 4.
Databáze: OpenAIRE
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