Decarboxylation of vinylene carbonate at triosmium clusters; X-ray crystal structure of the µ3-formylmethylidene compound [Os3(CHCHO)(CO)10]
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8,p. 1861-1864
- https://doi.org/10.1039/dt9870001861
Abstract
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).Keywords
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