Syntheses, and crystal and molecular structures of tetramethylammonium [aquamethanolhexakis(isothiocyanato)lanthanoidates(III)], [(CH3)4N]3[M(NCS)6(CH3OH)(H2O)] (M=Ln, and tetramethylammonium [heptakis(isothiocyanato)lanthanoidates(III)], [(CH3)4N]4[M(NCS

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概要

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• The title complexes were synthesized and their crystal and molecular structures were determined by the X-ray diffraction method using their single crystals. The crystals of the former ten hexakis(isothiocyanato) complexes of lanthanum through dysprosium(III) and erbiun(III) are isomorphous with each other: monoclinic, space group <I>P</I>2<SUB>1</SUB>, <I>Z</I>=2. The central metal atom is octa-coordinated, in a square-antiprism geometry, to six nitrogen atoms of thiocyanato (SCN) ions and two oxygen atoms of methanol and water molecules. The two oxygen atoms take the positions of the most approaching apexes of two squares. The latter three heptakis(isothiocyanato) complexes of dysprosium, erbium, and ytterbium are in another isomorphous form with each other: orthorhombic, space group <I>P</I>2<SUB>1</SUB><I>nb</I>, <I>Z</I>=4. The central metal atom is hepta-coordinated, in a deformed pentagonal-bipyramidal geometry, to seven nitrogen atoms of SCN ions.

• 公益社団法人 日本化学会の論文

著者

• Matsumura Naomi

  Department of Chemistry, School of Hygienic Sciences, Kitasato University

• Ouchi Akira

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

• Matsumoto Fumiko

  Department of Chemistry, School of Hygienic Sciences, Kitasato University

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