Syntheses, structure, and properties of several bis(O,O'-dialkyl dithiophosphato)cobalt(II)adducts.

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概要

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• Several amine or phosphine adducts of bis (<I>O</I>,<I>O</I>′-dialkyl dithiophosphato)cobalt(II), which were hardly oxidized in air at room temperature, were obtained as crystalline solids. The crystal and molecular structure of one adduct, Co(Me<SUB>2</SUB>dtp)<SUB>2</SUB>(triphenylphosphine) (Me<SUB>2</SUB>dtp=<I>O</I>,<I>O</I>′-dimethyl dithiophosphato group), was determined by means of the X-ray diffraction method. The crystal is monoclinic: space group P2<SUB>1</SUB>/n, <I>a</I>=26.712(4), <I>b</I>=9.495(1), <I>c</I>=11.180(5) Å, β=95.43(3)°, <I>Z</I>=4, <I>D</I><SUB>x</SUB>=1.495, <I>D</I><SUB>m</SUB>=1.45 g cm<SUP>−3</SUP>, μ(Mo <I>K</I>α)=1.17 mm<SUP>−1</SUP>, and the final <I>R</I> value obtained is 0.062 for 4466 observed reflections. The coordinated atoms around the cobalt atom are in a trigonal bipyramidal configuration. The approximate first formation constants of the adducts, <I>K</I>=[Co(II)(R<SUB>2</SUB>dtp)<SUB>2</SUB>·X]/{[Co(II)(R<SUB>2</SUB>dtp)<SUB>2</SUB>][X]} (R=alkyl group, and X=donor) in solution, were obtained by means of the spectrophotometric as well as the NMR technique.

• 公益社団法人 日本化学会の論文

著者

• SATO Shoichi

  The Institure for Solid State Physics, The University of Tokyo

• Shimoi Mamoru

  Department Of Basic Science Graduate School Of Arts And Sciences The University Of Tokyo

• Saito Yoshihiko

  The Institute for Solid State Physics The University of Tokyo

• Yoshino Yukichi

  Department of Chemistry, College of General Education, The University of Tokyo

• Uehiro Takashi

  Department of Chemistry, College of General Education, The University of Tokyo

• Ouchi Akira

  Department of Chemistry, College of Arts and Sciences, The University of Tokyo

• Yoshino Yukichi

  Department of Chemistry, Aoyama Gakuin University

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