The Absorption Spectra of Cobalt(III) Complexes. IV. The Preparation and the Absorption Spectra of Monohalogenomonoamine-bis (ethylenediamine)-cobalt(III) Complexes

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概要

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• The four iodo-amine complexes and some chloro- and bromo-amine complexes belonging to [CoX(NH<SUB>2</SUB>-R)en<SUB>2</SUB>]X<SUB>2</SUB> type have been newly synthesized to complete the series.<BR>From the measurements of the near-infrared, visible and ultraviolet absorption spectra, the geometrical structures of the complexes have been determined. The ammine complexes, [CoX(NH<SUB>3</SUB>)en<SUB>2</SUB>]X<SUB>2</SUB>, exist in both the cis- and the trans-forms, but the organic amine complexes, [CoX(NH<SUB>2</SUB>-R)en<SUB>2</SUB>]X<SUB>2</SUB>, exist only in the cis-form.<BR>The weak splitting of the A band has been observed for the first time in the bromo-amine complexes.

• 公益社団法人 日本化学会の論文

著者

• Shimura Yoichi

  Department of Chemistry Faculty of Science Osaka University

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