1965 Volume 38 Issue 10 Pages 1688-1693
Continuing our previous studies of the Mössbauer spectra of inorganic iron compounds, we have found some characteristic features of the spectra of some organic iron compounds. There is a general tendency, in a series of related compounds, for the isomer shift and the quadrupole splitting to increase regularly with increase in the structural complexity of the compounds.
The data for iron(III) acetate, benzoate and salicylate suggest the polynuclear structure of these compounds. The observed isomer shifts for other organic iron compounds may also be interpreted in terms of the chemical binding in the molecule.
No resonance absorption was observed for a few groups of organic iron chelates (1,3 diketone derivatives, etc.). Though our interpretation is still conjectual, the reason for this is believed to rest in the high recoil probability of these compounds.
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