J. Am. Chem. SOC.1981,103, 1279-1281
1279
Note that according to this mechanism, both methylene hydrogens derive from the [BHR3]- reducing agent, via the intermediacy of [OS~(CO)~~(CHO)]-, in accord with the experimental observations. When O S ~ ( C O ) ~ ~was C Hheated ~ to 70-80 OC under an H2 atmosphere, CH4 was evolved in -20% yield, as evidenced by n mass spectral analysis of the gases above such solution^.^^ Only CH2D2was produced when O S ~ ( C O ) ~ , Cwas H ~heated under a D2 atmosphere. The only Os-containing products from these reactions which could be identified were small amounts of Os3(CO)12(
