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Polarized Raman and resonance Raman spectra of single crystals of mixed valence metal complexes
Author(s) -
Papavassiliou G. C.,
Layek D.,
Theophanides T.
Publication year - 1980
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250090202
Subject(s) - raman spectroscopy , valence (chemistry) , chemistry , ethylenediamine , resonance (particle physics) , metal , halide , platinum , spectral line , crystallography , analytical chemistry (journal) , inorganic chemistry , atomic physics , biochemistry , physics , organic chemistry , chromatography , astronomy , optics , catalysis
Polarized Raman and resonance Raman spectra of single crystals of one‐dimensional mixed valence platinum complexes have been recorded and studied. Polarized Raman spectra of single crystals of [M(II) (en) 2 M(IV)(en) 2 X 2 ](ClO 4 ) 4 , where X = Cl or Br, M = Pt or Pd and en = ethylenediamine, show strong resonance enhancement of the…XM(IV)X…symmetric stretching vibration in the chain. Analysis of the spectra shows that the metals are coupled in the chain through the halide atoms. The coupling occurs by electron charge transfer via the d z 2 ‐orbitals of the metal from the lower to the higher oxidation state.