Studies on Metal Complex Formation in Solution. I. Cryptotanshinone-FeCl_3 Complex
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概要
- 論文の詳細を見る
Cryptotanshinone was isolated from tanshinone III as a Fe (III) complex. The cryptotanshinone-Fe (III) complex was obtained by mixing anhydrous FeCl_3 with cryptotanshinone in glacial acetic acid, and it decomposed to its original components on addition of water. Elemental analysis and measurements of the molar conductance, molecular weight and infrared and far-infrared spectra of this complex suggested that it is an equimolar complex [Fe (cryptotanshinone) Cl_3] in which cryptotanshinone is a bidentate ligand of the o-quinone type. This complex exhibited an absorption maximum at 560 nm in benzene, and was shown to have a 1 : 1 composition by the continuous variation, slope ratio and molar ratio methods. Similar complexes of related compounds were also 1 : 1. The apparent stability constants of these complexes, measured by molar ratio method, were compared ; results suggested that the ether oxygen of cryptotanshinone contributes to the stability of this complex.
- 公益社団法人日本薬学会の論文
- 1977-10-25
著者
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佐々木 喜男
Faculty of Pharmaceutical Sciences, Osaka University
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佐々木 喜男
Faculty Of Pharmaceutical Sciences Osaka University
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滝浦 潔
Faculty of Pharmaceutical Sciences, Osaka University
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片岡 和明
Faculty Of Pharmaceutical Science Osaka University
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滝浦 潔
Faculty Of Pharmaceutical Science Osaka University
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