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Far IR spectra of dithiocarbamate complexes correlations with structure parameters

1981; Pergamon Press; Volume: 43; Issue: 6 Linguagem: Inglês

10.1016/0022-1902(81)80014-0

1878-1225

Robert Kellner, George St. Nikolov,

Chemical Thermodynamics and Molecular Structure

The far IR spectra (32–500cm−1) of N,N-disubstituted dithiocarbamate complexes, M(R2dtc)n (n = 3, M Mn, Fe, Co; n = 2, M  Ni, Cu, Zn, Cd, Hg, Pb; R  Et, n-Pr, i-Pr, n-Bu, i-Bu; R2N  pyrrol, pyrrolidyl) have been studied with the purpose of locating the modes involving displacement of the central atom. The IR bands related to changes in R(MS) and SMS have been found by comparing the IR spectra with M  const and R  variable, and those related to internal ligand modes with R  const and Mvariable. The spectral assignment thus obtained have been found to produce correlations with a number of structural parameters (vivs CFSE, v2ivs R(MS) and ∡ SMS). The correlations reveal that the modes involving displacement of the central atom are coupled to a large extent.