Studies on mixed valence complexes of platinum and palladium. I. Preparation and characterization of Pt(II)-Pt(IV), Pd(II)-Pt(IV), and Pd(II)-Pd(IV) complexes of the general formula, [M(AA)2][M'X2(AA)2]Y4.
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概要
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A series of deeply colored mixed valence complexes of the general formula [M(AA)<SUB>2</SUB>][M′X<SUB>2</SUB>(AA)<SUB>2</SUB>]Y<SUB>4</SUB> were prepared and characterized, where M–M′=Pt(II)–Pt(IV), Pd(II)–Pt(IV), and Pd(II)–Pd(IV); (AA)=ethylenediamine, propylenediamine, and trimethylenediamine; X=Cl, Br, and I; Y=ClO<SUB>4</SUB>, BF<SUB>4</SUB>. The relationships between the reflection spectra and the nature of the constituents (X, (AA), Y and M–M′) of the compounds were studied. The value of \barν<SUB>max</SUB> of the main absorption band in the visible region decreases in the order: Cl→Br→I, pn→tn→en, ClO<SUB>4</SUB>→BF<SUB>4</SUB>, Pd(II)–Pt(IV)→Pt(II)–Pt(IV)→Pd(II)–Pd(IV). On the basis of dichroism of the crystals, it can be predicted that the X–M′(IV)–X…M(II) atoms in these complexes are arrayed in a straight line parallel to the crystal needle.
- 公益社団法人 日本化学会の論文
著者
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Yamashita Masahiro
Department Of Bioengineering Tokyo Institute Of Technology
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Kida Sigeo
Department of Chemistry Wakayama University
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Matsumoto Naohide
Department of Applied Chemistry, Faculty of Engineering, Kumamoto University
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