Cobalt(III) complexes with (N6-nXn) type ligands. IV. The preparation and properties of tetraammine(salicylideneaminato)cobalt(III) and diamminebis(salicylideneaminato)cobalt(III) complexes.

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概要

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• Tetraammine(salicylideneaminato)cobalt(III) complexes, (<U>Remark: Graphics omitted.</U>) (X: Cl, NO<SUB>3</SUB>, ClO<SUB>4</SUB>, and picrate) and diamminebis(salicylideneaminato)cobalt(III) complexes, (<U>Remark: Graphics omitted.</U>) (X: Cl, NO<SUB>3</SUB>, ClO<SUB>4</SUB>, and picrate), have been isolated from a reaction mixture of CoCl<SUB>2</SUB>·6H<SUB>2</SUB>O, 25% aqueous ammonia, 30% H<SUB>2</SUB>O<SUB>2</SUB> and salicylaldehyde, and characterized. In the latter complexes, the three isomers of green, orange and brown color have been isolated by column chromatography on alumina and their configurations have been established by their NMR spectra, <I>i.e.</I>, the configuration of the green complex is in the <I>trans-trans-trans</I> positions for two ammine ligands, and two phenoxyl groups and two CH=NH groups of the coordinated salicylideneaminato ligands, respectively, while those of the orange and brown complexes are in the <I>trans-cis-cis</I> and <I>cis-cis-trans</I> positions, respectively.

• 公益社団法人 日本化学会の論文

著者

• Yamamoto Yoshihisa

  Faculty Of Engineering Kyushu University

• Toyota Eiko

  Faculty of Pharmaceutical Science, Higashi Nippon Gakuen University

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