The Crystal Structure of (−)<SUB>589</SUB>-Dinitrobis(ethylenediamine)cobalt(III) (+)<SUB>589</SUB>-Bis(malonato)ethylenediaminecobaltate(III)

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概要

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• The crystal structure of (−)<SUB>589</SUB>-[Co(NO<SUB>2</SUB>)<SUB>2</SUB>en<SUB>2</SUB>] (+)<SUB>589</SUB>-[Co mal<SUB>2</SUB> en] has been investigated by the X-ray method. Crystal data: triclinic, space group <I>P</I>1; <I>a</I>=10.58(2)Å, <I>b</I>=7.98(1)Å, <I>c</I>=7.99(1)Å, α=122.8(2)°, β=105.3(2)°, γ=74.6(2)°; <I>Z</I>=1. The crystal structure was determined by the Fourier technique and was refined by the leastsquares method to an <I>R</I> factor of 0.101. The <I>Δ</I> configuration has been assigned to both the complex cation and anion, (−)<SUB>589</SUB>-[Co(NO<SUB>2</SUB>)<SUB>2</SUB>en<SUB>2</SUB>]<SUP>+</SUP> and (+)<SUB>589</SUB>-[Co mal<SUB>2</SUB>en]<SUP>−</SUP>. The two Co-mal chelate rings are nearly planar. The O–Co–O angle in this ring is 96°, slightly larger than the N–Co–N angle observed in the cobalt(III)-trimethylenediamine chelate ring. All the ethylenediamine ligands in the two complex ions have the <I>ob</I>-conformation.

• 公益社団法人 日本化学会の論文

著者

• Matsumoto Keiji

  Department Of Applied Physics Graduate School Of Engineering Yokohama National University

• Kuroya Hisao

  Department of Chemistry, Okayama University of Science

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