Article ID Journal Published Year Pages File Type
1327977 Journal of Organometallic Chemistry 2008 13 Pages PDF
Abstract

The mechanism of conversion of terminal alkynes RCCH to coordinated carbyne OsCCH2R by Os(H)2ClXL2 (L = PiPr3) has been studied for X = OTf and BArF4 (ArF = 3,5-di(CF3)2(C6H3). Ready loss of these X makes possible detection of η2-RCCH (4-electron donor) and CH(CH2R) intermediates, and D-labeling (RCCD) gives OsDClX(CCH2R)L2. The energy of various intermediates, including the only experimentally unobserved one, η2-vinyl, was evaluated with DFT(PBE) calculations.

Graphical abstractThe mechanism of conversion of terminal alkynes RCCH to coordinated carbyne OsCCH2R by Os(H)2ClXL2 (L = PiPr3) has been studied for X = OTf and BArF4 (ArF = 3,5-di(CF3)2(C6H3). Ready loss of these X makes possible detection of η2-RCCH (4-electron donor) and CH(CH2R) intermediates, and D-labeling (RCCD) gives OsDClX(CCH2R)L2. The energy of various intermediates, including the only experimentally unobserved one, η2-vinyl, was evaluated with DFT(PBE) calculations.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Inorganic Chemistry
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