The Crystal Structure of the Polymerization Catalyst of Acetaldehyde and Its Derivatives. II. The Crystal and Molecular Structure of the Trimethylamine Oxide Adduct of Dimethylaluminum <I>N</I>-Phenylbenzimidate, [(CH<SUB>3</SUB>)<SUB>2</SUB>Al·O·C(C<SUB>

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概要

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• The molecular structure of a stereospecific (<I>isotactic</I>) polymerization catalyst of the acetaldehyde-Lewis base adduct [Me<SUB>2</SUB>Al·O·CPh:NPh,ONMe<SUB>3</SUB>] has been determined from three-dimensional X-ray data collected on a single crystal diffractometer. The crystal belongs to the triclinic system (space group <I>P</I>\bar1), with two formula units in a cell with dimensions of; <I>a</I>=8.517±0.004, <I>b</I>=10.096±0.005, <I>c</I>=12.256±0.005 Å, α=104.67±0.04, β=106.97±0.04, and γ=98.10±0.04°. The structure was solved by the symbolic addition method and refined by the block-diagonal, least-squares procedure. The molecule is monomeric, and both amide and ONMe<SUB>3</SUB> groups are connected to the aluminum atom through oxygen atoms. The amide moiety has an imino-ether type structure and two adjacent benzene rings take trans configuration about the N–C bond. The co-ordinated ONMe<SUB>3</SUB> group has a structure similar to that of the free molecule.

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 Life Science Faculty Of Science Himeji Institute Of Technology

• Kakudo Masao

  Institute for Protein Research Osaka University

• Yasuoka Noritake

  Department of Applied Chemistry, Faculty of Engineering, Osaka University

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