The crystal and molecular structures of trans-bis(trimethylphosphine)[1,2-bis(methoxycarbonyl)vinyl](phenylethynyl)palladium(II).

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概要

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• The X-ray molecular structure of the addition product of <I>trans</I>-HPd(PEt<SUB>3</SUB>)<SUB>2</SUB>(C≡CPh) with dimethyl acetylene-dicarboxylate has been determined to be [<I>trans</I>-{(MeO<SUB>2</SUB>C)HC=C(CO<SUB>2</SUB>Me)}Pd(PEt<SUB>3</SUB>)<SUB>2</SUB>(C≡CPh)]. The crystal belongs to the monoclinic system, space group P2<SUB>1</SUB>/c, with eight formula units in a cell with dimensions of <I>a</I>=17.844(3), <I>b</I>=9.476(3), <I>c</I>=36.061(4) Å, β=98.18(1)°. Two independent molecules have similar structures except for the conformation of the phenylethynyl groups and one of the triethylphosphine groups. The 1,2-bis(methoxycarbonyl)vinyl and phenylethynyl groups are σ-bonded to the palladium atom. No significant difference is observed between the Pd–C(sp)[2.04(2) and 2.03(2) Å] and Pd–C(sp<SUP>2</SUP>)[2.05(2) and 2.06(2) Å] bond lengths. The environment of the palladium atom is approximately square-planar: Pd–P=2.321(5), 2.312(5), and 2.305(5), 2.311(5) Å.

• 公益社団法人 日本化学会の論文

著者

• Kai Yasushi

  Department Of Applied Chemistry Faculty Of Engineering Osaka University

• Kasai Nobutami

  Department Of Applied Biological Science Tokyo University Of Science

• Yasuoka Noritake

  Department of Applied Chemistry, Faculty of Engineering, Osaka University

• Yasuda Takao

  Department of Applied Chemistry, Faculty of Engineering, Osaka University

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