Silyl-, Germyl-, and Stannyl-Pentacarbonylmetalates Of Chromium, Molybdenum, and Tungsten
Open Access
- 15 February 1975
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 53 (4) , 467-473
- https://doi.org/10.1139/v75-065
Abstract
The new anions [R3M′M(CO)5]− (R3M′ = Ph3Si, MePh2Si, Ph3Ge, Ph3Sn, Me3Sn, and Ph3Pb; M = Cr, Mo, W) have been prepared as tetraethylammonium salts by reaction of R3M′Li with [Et4N(ClM(CO)5]. The redistribution reaction between [Ph3SnW(CO)5]− and [Cl3SnW(CO)5]− affords [PhCl2SnW(CO)5]− or [Ph2ClSnW(CO)5]−. Anhydrous HCl reacts with [Ph3SiW(CO)5]− and [Ph3GeW(CO)5]− to form [ClW(CO)5]− but with [Ph3SnW(CO)5]−to form [Cl3SnW(CO)5]−. An insertion reaction of SnBr2 with [BrW(CO)5]− forms the new anion [Br3SnW(CO)5]− while SnCl2 and GeCl2 (from HGeCl3) react with [ClM(CO)5]− to produce the known species [Cl3M'M(CO)5]− (M′ = Ge, Sn; M = Cr, Mo, W). Infrared spectra in the carbonyl stretching region are reported for all anions.Keywords
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