Decarboxylation of vinylene carbonate at triosmium clusters; X-ray crystal structure of the µ3-formylmethylidene compound [Os3(CHCHO)(CO)10]

Autor:	Alejandro J. Arce, Antony J. Deeming, Nigel P. C. Walker, Michael B. Hursthouse
Rok vydání:	1987
Předmět:	chemistry.chemical_classification Stereochemistry Decarboxylation Decarbonylation chemistry.chemical_element General Chemistry Crystal structure Medicinal chemistry chemistry.chemical_compound chemistry X-ray crystallography Molecule Osmium Inorganic compound Carbene
Zdroj:	J. Chem. Soc., Dalton Trans.. :1861-1864
ISSN:	1364-5447 0300-9246
DOI:	10.1039/dt9870001861
Popis:	Vinylene carbonate [graphic omitted]O reacts at room temperature with [Os2H3(CO)10] to give a good yield of the vinyloxy cluster [Os3H(OCHCH2)(CO)10](1). A similar decarboxylation occurs on reaction with [Os3(CO)10(MeCN)2] to give the formylmethylidene cluster [OS3µ3-CHCHO)(µ-CO)(CO)9](2). The single-crystal X-ray structure of (2) is closely related to those of [Os3(µ-CHR)(µ-CO(CO)10](R = H or SiMe3) with two osmium atoms bridged both by CO and an alkylidene group. In (2) this group is part of a four-electron-donating µ3 bridge. Hydrogenation of (2) or decarbonylation of (1) leads to the formylmethylidene compound [Os3H2(CHCHO)(CO)9](3).
Databáze:	OpenAIRE
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