Electronic absorption and circular dichroism spectra of Δ-[Os(bipy) 2(bipy −)] +, Δ-[Os(bipy)(bipy −) 2] 0 and Δ-[Os(bipy −) 3]

The electronic absorption and circular dichroism spectra of the complexes produced by the one-, two- and three-electron reduction of Δ-[Os(bipy) 3] 2+ are reported for the first time. The spectra confirm that, as in the cases of the Fe II and Ru II analogues, the electrons are localised on the bipyr...

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Bibliographic Details
Published in:Spectrochimica acta. Part A: Molecular spectroscopy 1994-09, Vol.50 (10), p.1777-1781
Main Authors: Noble, Brian C, Peacock, Robert D
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Molecular spectra
Optical activity and dichroism
magnetooptical and electrooptical spectra
Optical activity, optical rotation
circular dichroism
Physics
Ultraviolet spectra
Visible spectra
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Summary:The electronic absorption and circular dichroism spectra of the complexes produced by the one-, two- and three-electron reduction of Δ-[Os(bipy) 3] 2+ are reported for the first time. The spectra confirm that, as in the cases of the Fe II and Ru II analogues, the electrons are localised on the bipyridine ligand and the complexes are correctly formulated [Os(bipy) 2(bipy −)] +, [Os(bipy)(bipy −) 2] 0 and [Os(bipy −) 3] −. The absorption spectra of the series of fully reduced complexes [M(bipy −) 3] −: M  Fe, Ru, Os are compared.
ISSN:0584-8539
DOI:10.1016/0584-8539(94)80182-7