The Crystal Structure of <I>cis</I>-Ammonium Disulfitotetramminecobaltate(III) Trihydrate, NH<SUB>4</SUB>[Co(SO<SUB>3</SUB>)<SUB>2</SUB>(NH<SUB>3</SUB>)<SUB>4</SUB>]·3H<SUB>2</SUB>O
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概要
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The structure of NH<SUB>4</SUB>[Co(So<SUB>3</SUB>)<SUB>2</SUB>(NH<SUB>3</SUB>)<SUB>4</SUB>]·3H<SUB>2</SUB>O has been determined by the heavy-atom method and refined to <I>R</I>=0.12 by a least-squares analysis based on 874 three-dimensional visual data. The compound crystallizes in the orthorhombic space group <I>P</I>2<SUB>1</SUB>2<SUB>1</SUB>2<SUB>1</SUB> with unit cell dimensions of <I>a</I>=10.995, <I>b</I>=17.563, <I>c</I>=6.834 Å, and <I>Z</I>=4. The two sulfito groups in the complex anion are coordinated to the central cobalt atom in <I>cis</I> positions through their sulfur atoms, with Co-S distances of 2.23 Å (mean). The <I>cis</I>-configuration of brown sodium salt, with an absorption spectrum similar to that of the trihydrate of ammonium salt, has also been established.
- 公益社団法人 日本化学会の論文
著者
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Nakahara Masayoshi
Department of Chemistry, College of Science, Rikkyo (St. Paul's) University
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Nakahara Masayoshi
Department of Chemistry, Rikkyo University
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Nomura Teruo
Department of Chemistry, Faculty of Science, Rikkyo University
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