Synthesis and X-ray structure of triethylenetetraminepalladium(II) complex.

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概要

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• The triethylenetetraminepalladium(II) perchlorate and the potassium triethylenetetraminepalladium(II)tris-(hexafluorophosphate) were prepared; the X-ray structure analysis has been carried out for the latter compound. The crystal of [Pd(trien)](PF<SUB>6</SUB>)<SUB>2</SUB>·KPF<SUB>6</SUB> is orthorhombic, with space group Pbca: <I>a</I>=21.645 (5), <I>b</I>=20.873 (5), <I>c</I>=9.541 (2) Å, and <I>Z</I>=8. The structure has been determined from X-ray diffractometer data and refined to <I>R</I>=0.091 (1166 reflections). The Pd atom has a planar coordination of 4N atoms disposed in a somewhat trapezoidal form. The complex cation has a pseudo symmetry plane which is perpendicular to the 4 N plane and bisects the H<SUB>2</SUB>N–Pd–NH<SUB>2</SUB> angle. In the quadridentate triethylenetetramine ligand, each of the terminal H<SUB>2</SUB>N–CH<SUB>2</SUB>–CH<SUB>2</SUB>–NH– fragments forms a 5-membered chelate ring with the asymmetric envelope conformation, whereas the chelate ring formed by the middle –NH–CH<SUB>2</SUB>–CH<SUB>2</SUB>–NH– fragment has the symmetric envelope conformation. The electronic spectrum of [Pd(trien)]<SUP>2+</SUP> is presented.

• 公益社団法人 日本化学会の論文

著者

• Matsumoto Keiji

  Department Of Applied Physics Graduate School Of Engineering Yokohama National University

• Kuroya Hisao

  Department of Chemistry, Okayama University of Science

• Hori Fumio

  Department of Chemistry, Faculty of Science, Osaka City University

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