81Br NQR and 119Sn Moessbauer spectra for SnBr3- anions.
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概要
- 論文の詳細を見る
The structures of the SnBr<SUB>3</SUB><SUP>−</SUP> anions in MSnBr<SUB>3</SUB> (M=(CH<SUB>3</SUB>)<SUB>2</SUB>NH<SUB>2</SUB>, (CH<SUB>3</SUB>)<SUB>3</SUB>NH) and MSnBr<SUB>3</SUB>·H<SUB>2</SUB>O (M=K, NH<SUB>4</SUB>) were deduced by means of <SUP>81</SUP>Br NQR spectroscopy. The former compounds have three <SUP>81</SUP>Br NQR lines in the frequency range 73–80 MHz at 77 K, indicating the presence of pyramidal SnBr<SUB>3</SUB><SUP>−</SUP> anions. The anion structure of the latter hydrate, on the other hand, was presumed to be square-pyramid with one terminal and two bridging Br atoms, because two of the <SUP>81</SUP>Br NQR frequencies were considerably low compared with that of the terminal atom. Phase transitions were observed for the latter hydrates. Associated with these, drastic increases of the NQR frequencies were observed only for the bridging atoms, suggesting significant changes in the bridging network.
- 公益社団法人 日本化学会の論文
著者
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Okuda Tsutomu
Department Of Bio-recycling Faculty Of Engineering Hiroshima Kokusai Gakuin University
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Hayashi Tomoko
Department Of Applied Chemistry Graduate School Of Engineering Nagoya University
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Yamada Koji
Deparment Of Food Science And Technology Faculty Of Agriculture Kyushu University
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Ichiba Sumio
Department of Chemistry, Faculty of Science, Hiroshima University
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Hayashi Tomoko
Department of Chemistry, Faculty of Science, Hiroshima University
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Umehara Takako
Department of Chemistry, Faculty of Science, Hiroshima University
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