The Crystal and Molecular Structure of Bis(2-hydroxyethylimino-salicylaldehydato)copper(II)

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概要

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• The crystal structure of bis(2-hydroxyethyliminosalicylaldehydato)copper(II) has been determined by means of an X-ray diffraction study of a single-crystal specimen. Four formula units are contained in the monoclinic unit cell, the <I>P</I>2<SUB>1</SUB>⁄<I>c</I> space group, with lattice parameters of: <I>a</I>=18.41 A, <I>b</I>=4.82 Å, <I>c</I>=19.86 Å, and β=99.1° (<I>Dm</I>=1.50 g·cm<SUP>−3</SUP>; <I>Dx</I>=1.50 g·cm<SUP>−3</SUP>). The structure has been refined, by means of three-dimensional difference syntheses and the least-squares method, to <I>R</I>=0.095. It has been confirmed that copper(II) links to the 2-hydroxyethyliminopyruvate anion through the phenolic oxygen and the nitrogen of the Schiff base linkage, while the alcoholic oxygen in the ethanol-amine moiety is free from coordination. The two Schiff-base ligands are coordinated around copper(II) in the <I>trans</I>-configuration. All the bond distances and angles in the complex are within the range of normal values. The N-Cu-O angles (91.3 and 91.8°) in the chelate rings are close to a right angle, showing that there is less strain in the chelate structure than in the case of a similar chelate of the pyruvate Schiff base (84.6°).

• 公益社団法人 日本化学会の論文

著者

• Iijima Kinya

  Department Of Chemistry Faculty Of Science Shizuoka University

• Oonishi Isao

  Department Of Biomolecular Science Faculty Of Science Toho University

• Nakahara Akitsugu

  Institute Of Chemistry College Of General Education Osaka University

• Muto Fumio

  Department of Applied Chemistry, Faculty of Engineering, Yamanashi University

• Komiyama Yoshimichi

  Department of Applied Chemistry, Faculty of Engineering, Yamanashi University

• Oonishi Isao

  Department of Applied Chemistry, Faculty of Engineering, Yamanashi University

• Iijima Kinya

  Department of Applied Chemistry, Faculty of Engineering, Yamanashi University

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