Vibrational studies on bis-terpyridine-ruthenium(II) complexes

The behaviour of the bis-terpyridine-ruthenium(II) complex is studied with IR and Raman measurements followed by a normal coordinate analysis. Both in-plane and out-of-plane vibmtions of the 2,2′,6′,2″-terpyridine unit are analysed. The observed frequencies are reproduced with an average error of 1....

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Bibliographic Details
Published in:Spectrochimica acta. Part A: Molecular spectroscopy 1994, Vol.50 (1), p.169-183
Main Authors: Hansen, Per Waaben, Jensen, Palle Waage
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Infrared spectra
Molecular properties and interactions with photons
Molecular spectra
Physics
Raman and rayleigh spectra (including optical scattering)
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Summary:The behaviour of the bis-terpyridine-ruthenium(II) complex is studied with IR and Raman measurements followed by a normal coordinate analysis. Both in-plane and out-of-plane vibmtions of the 2,2′,6′,2″-terpyridine unit are analysed. The observed frequencies are reproduced with an average error of 1.3 % for in-plane and 1.9 % for out-of-plane vibrations. The force field and the potential energy distribution are presented using a 30 atomic approximation of the molecule. The results are compared to the resonance Raman data, giving a qualitative description of the MLCT resonant state. In order to obtain the results two specific deuterated analogues of the bis-terpyridine-ruthenium(II) complex were synthesized.
ISSN:0584-8539
DOI:10.1016/0584-8539(94)80125-8