Crystal and molecular structure of (ethyl methacrylate)-bis(triphenylphosphine)nickel(0).
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The crystal and molecular structure of (ethyl methacrylate)bis(triphenylphosphine)nickel, (CH<SUB>2</SUB>=C(CH<SUB>3</SUB>)–COOC<SUB>2</SUB>H<SUB>5</SUB>) (PPh<SUB>3</SUB>)<SUB>2</SUB>Ni, has been determined by single-crystal X-ray analysis. The crystals are monoclinic, space group P2<SUB>1</SUB>/c, with unit-cell dimensions <I>a</I>=13.690(2), <I>b</I>=16.855(2), <I>c</I>=15.699(1)Å, β=105.09(1)°, and <I>Z</I>=4. The structure was solved by the heavy-atom method and refined by block-diagonal least-squares technique, using 4701 independent reflections, the final <I>R</I> value being 0.084 for |<I>F</I><SUB>o</SUB>|≥3σ(<I>F</I>). The two phosphine ligands and the two olefinic carbon atoms comprise a distorted square-planar configuration about the Ni atom. The Ni–β-CH<SUB>2</SUB> bond (1.976(8)Å) is significantly shorter than the Ni–α-C bond (2.029(7)Å). The difference is explained by the contribution of polarized resonance structure in metal-olefin bonding.
- 公益社団法人 日本化学会の論文
著者
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Yamamoto Takakazu
Research Laboratory Of Resouces Utilization Tokyo Institute Of Technology
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Takenaka Akio
Laboratory of Chemistry for Natural Products, Tokyo Institute of Technology
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Sasada Yoshio
Laboratory of Chemistry for Natural Products, Faculty of Science, Tokyo Institute of Technology
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Ishizu Junichi
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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Yamamoto Akio
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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Komiya Sanshiro
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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