Synthesis, and crystal and molecular structure of bis(N-methylformamide)tetrakis(thiocyanato)cobalt(II)mercury(II), CoHg(SCN)4(HCONHCH3)2.

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概要

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• The title complex was synthesized and its crystal and molecular structure were determined by the single-crystal X-ray diffraction technique. The crystal is orthorhombic with a space group <I>P</I>2<SUB>1</SUB><I>nb</I>, <I>a</I>=14.953(4), <I>b</I>=15.955(4), <I>c</I>=7.6838(9) Å. The crystal was solvent by means of the heavy-atom method and the final <I>R</I> value was 0.059. The mercury atom is in the tetrahedral geometry, coordinated with four sulfur atoms of the thiocyanate (SCN) ions, and the cobalt atoms is in the octahedral geometry, coordinated with four nitrogen atoms of SCN ion and two oxygen atoms of <I>N</I>-methylformamide which occupy the <I>cis</I> positions. Each pair of different kinds of metal atoms is bridged by an SCN ion and are in a three-dimensional network. Twenty-four membered rings of Co<SUB>3</SUB>Hg<SUB>3</SUB>(SCN)<SUB>6</SUB>, where the metal atoms are arranged hexagonally in a chair-form, are condensed two-dimensionally approximately parallel to the (100) plane. All mercury atoms on one plane are bridged by SCN ions to the cobalt atoms of the polymeric plane next to the [100] direction, while the cobalt atoms are linked by SCN ions to the mercury atoms on the next plane of the opposite side. The mfa ligands take their positions in vacancy of the network.

• 公益社団法人 日本化学会の論文

著者

• Ouchi Akira

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

• Kinoshita Hisashi

  Department of Chemistry, Faculty of Liberal Arts, Shizuoka University

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