Spectroscopic studies on organometallic compounds. Part XII. Infrared spectra of tetracarbonylcobalt complexes in the carbonyl stretching region
- 1 January 1968
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1199-1202
- https://doi.org/10.1039/j19680001199
Abstract
An analysis has been made of the carbonyl stretching frequencies of complexes of formula R3MCo(CO)4(M = Si, Ge, Sn, or Pb; R = Cl, Br, I, Me, Et, Ph, and MeO) and of some mixed derivatives R1 2R2GeCo(CO)4. Force constants have been calculated for these compounds, and for the complexes Fe(CO)5, LFe(CO)4(L = Et3P and Ph3P), using CO stretch–stretch interaction relationships derived from elementary bonding considerations. The force constants obtained show a linear dependence upon the Taft polarity constants of the groups attached to the particular ligand atom M.Keywords
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