Evidence for near-neighbour interactions in some substituted methyl derivatives of transition metals including the molecular crystal structure determinations of (π-C5H5)Fe(CO)2CH2·CO2H and (π-C5H5)Mo(CO)3CH2·CO2H
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1309-1321
- https://doi.org/10.1039/j19690001309
Abstract
The preparation and properties of the acids, M–CH2·CO2H, and amides, M–CH2·CONH2 are described, where M =π-C5H5Fe(CO)2, π-C5H5Mo(or W)(CO)3, Mn(or Re)(CO)5, or (DMG)2Co py (DMG = dimethylglyoximate). pKa Determinations show that the acids are very weak. The crystal structures of the iron and molybdenum acids have been determined; unusual distances are found in the former. It is suggested that there is direct interaction between the metal and β-substituents in these complexes. By calculations, the possible extent of overlap between an iron atom and either a β-carbon atom or a hydrogen atom attached to a β-carbon is estimated.Keywords
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