Azide-, thiocyanate- or cyanate-bridged di- and trinuclear copper(II) complexes with N,N,N',N'-tetramethylethylenediamine, N,N-diethylethylenediamine, 2,2'-bipyridyl or 1,10-phenanthroline.

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概要

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• A series of di- and trinuclear copper(II) complexes containing <I>N</I>,<I>N</I>,<I>N</I>′,<I>N</I>′-tetramethylethylenediamine(tmen), <I>N</I>,<I>N</I>-diethylethylenediamine(deen), 2,2′-bipyridyl(bpy) or 1,10-phenanthroline(phen) and azide, thiocyanate or cyanate ions have been prepared and characterized by their magnetic susceptibilities, infrared, electronic, and ESR spectra, and electric conductances. Magnetic susceptibility data for the dimeric complex [Cu<SUB>2</SUB>(tmen)<SUB>2</SUB>(N<SUB>3</SUB>)<SUB>2</SUB>] (ClO<SUB>4</SUB>)<SUB>2</SUB> shows the presence of a ferromagnetic interaction (Weiss constant θ=+30 K) above 150 K, whereas the two copper(II) ions are apparently non-coupled below 150 K. On the other hand, the dimeric complex [Cu<SUB>2</SUB>(bpy)<SUB>2</SUB>(N<SUB>3</SUB>)<SUB>2</SUB>] (ClO<SUB>4</SUB>)<SUB>2</SUB> shows the presence of a large antiferromagnetic exchange interaction (μ<SUB>eff</SUB><0.6 B.M. at room temperature). The complex [Cu<SUB>3</SUB>(tmen)<SUB>3</SUB>(NCS)<SUB>3</SUB>](ClO<SUB>4</SUB>)<SUB>3</SUB>·1.5H<SUB>2</SUB>O is estimated to have the trimeric structure; the temperature-dependence of the magnetic susceptibility for this compound indicates the existence of an antiferromagnetic exchange interaction with a <I>J</I> value of −175 cm<SUP>−1</SUP>.

• 公益社団法人 日本化学会の論文

著者

• Suzuki Shinnichiro

  Institute Of Chemistry College Of General Education Osaka University

• Sakurai Takeshi

  Institute of Chemistry, College of General Education, Osaka University

• NAKAO Yasuo

  Chemical Laboratory, Faculty of Education Okayama University

• Nakahara Akitsugu

  Institute Of Chemistry College Of General Education Osaka University

• Sakurai Takeshi

  Institute For Molecular Science

• Mori Wasuke

  Institute of Chemistry, College of General Education, Osaka University

• Nakamura Hideo

  Chemical Laboratory, Faculty of Education, Okayama University

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