Reactions of bis(.BETA.-diketonato)platinum(II) and -palladium(II) with diphosphines Ph2PCHRPPh2 (R=H, Me): Unexpected formation of the homoleptic bis(diphenylphosphino)methanido and related complexes.
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概要
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The reactions of [M(β-dik)<SUB>2</SUB>] (M=Pt(II), Pd(II); β-dik=acetylacetonate (acac), dipivaloylmethanate (dpm), hexafluoroacetylacetonate (hfac) ions) with dppm (dppm=Ph<SUB>2</SUB>PCH<SUB>2</SUB>PPh<SUB>2</SUB>) and mdppm (mdppm=Ph<SUB>2</SUB>PCH(Me)PPh<SUB>2</SUB>) have been investigated. [M(hfac)<SUB>2</SUB>] complexes react with dppm to afford the stable cationic complexes, [M(dppm)<SUB>2</SUB>](hfac)<SUB>2</SUB>. By contrast, [M(acac)<SUB>2</SUB>] complexes react to give the homoleptic bis(diphenylphosphino)methanido complexes, [M(Ph<SUB>2</SUB>PCHPPh<SUB>2</SUB>)<SUB>2</SUB>], through deprotonation of dppm by the displaced acac anions. The analogous complexes, [M(Ph<SUB>2</SUB>PC(Me)PPh<SUB>2</SUB>)<SUB>2</SUB>], are obtained using mdppm, instead of dppm. A complete reaction scheme leading to these products is proposed, based on the IR and <SUP>1</SUP>H, <SUP>13</SUP>C, and <SUP>31</SUP>P NMR spectral data. Some consideration is given to the dependence of these reactions on the metals and the β-diketonate ligands, employed.
- 公益社団法人 日本化学会の論文
著者
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Nakamura Yukio
Department Of Biotechnology Faculty Of Agriculture Gifu University
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NAKAMURA Yukio
Department of Chemistry, Faculty of Science, Osaka City University
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Okeya Seichi
Department of Chemistry, Faculty of Education, Wakayama University
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Hashimoto Hiromasa
Department of Chemistry, Faculty of Science, Osaka City University
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