A NEW ROUTE TO MANGANESE AND RHENIUM CARBONYL TETRAFLUOROBORATE SALTS AND AN IMPROVED PROCEDURE FOR PREPARING THEIR PRECURSOR HYDRIDES

Tetrafluoroborate salts of substituted Mn and Re carbonyls can be prepared in almost quantitative yield from their corresponding hydrides by the following reaction: where P 2 are either the chelating phosphines, 1,2-bis(diphenylphosphino)ethane or 1,3-bis(diphenyi-phosphino)propane, or triphenylphosphine. The hydrides may be prepared from M 2 (CO) 10 in a single reaction by refluxing the decacarbonyl in 1-pentanol in the presence of the desired phosphine.