Crystal Structure of μ-Peroxo-bis[nitrobis(ethylenediamine)cobalt(III)] Dinitrate Tetrahydrate

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概要

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• The crystal and molecular structure of μ-peroxo-bis[nitrobis(ethylenediamine)cobalt(III)] dinitrate tetrahydrate, [NO<SUB>2</SUB>(en)<SUB>2</SUB>CoO<SUB>2</SUB>Co(en)<SUB>2</SUB>NO<SUB>2</SUB>](NO<SUB>3</SUB>)<SUB>2</SUB>·4H<SUB>2</SUB>O has been determined using visual intensity data of three dimensional Weissenberg photographs taken with Ni-<I>K</I>α radiation. The brown-black salt is monoclinic with space group P2<SUB>1</SUB>/n and cell dimensions <I>a</I>=10.755±0.011, <I>b</I>=12.941±0.008, <I>c</I>=9.709±0.006 Å, and β=100.4±0.1°. The least-squares refinement with anisotropic temperature factors gave an <I>R</I> index of 0.106. The coordinating ligands form nearly regular octahedra about the cobalt atoms, with Co–N(en), Co-N(NO<SUB>2</SUB>), and Co–O distances of about 1.95, 1.94, and 1.89 Å, respectively. Both NO<SUB>2</SUB><SUP>−,</SUP>s are <I>trans</I> to the O–O bridge, and the geometry of Co-O-O-Co is <I>trans</I> planar with O–O distance of 1.53 Å and Co–O–O angle of 110°. The two Co–(en)<SUB>2</SUB> moieties have δδ and λλ conformations.

• 公益社団法人 日本化学会の論文

著者

• Mori Masayasu

  Faculty of Science Osaka City University

• Shibahara Takashi

  Faculty of Science, Osaka City University

• Koda Shigetaka

  Faculty of Science, Osaka City University

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