Preparation and crystal structures of binuclear copper(II) complexes of N,N',N",N'"-tetrakis(2-aminoethyl)1,4,8,11-tetraazacyclotetradecane containing azide, cyanate, or thiocyanate ion.

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概要

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• Three binuclear copper(II) complexes of <I>N</I>,<I>N</I>′,<I>N</I>″,<I>N</I>'″-tetrakis(2-aminoethyl)-1,4,8,11-tetraazacyclotetradecane (taec), [Cu<SUB>2</SUB>(taec)N<SUB>3</SUB>](ClO<SUB>4</SUB>)<SUB>3</SUB> (<B>1</B>), [Cu<SUB>2</SUB>(taec)(NCO)](ClO<SUB>4</SUB>)<SUB>3</SUB> (<B>2</B>), and [Cu<SUB>2</SUB>(taec)(NCS)<SUB>2</SUB>](ClO<SUB>4</SUB>)<SUB>2</SUB>·H<SUB>2</SUB>O (<B>3</B>), were prepared and characterized. The crystal structures of these complexes were determined by single-crystal X-ray analysis. In all the complexes taec coordinates to each copper through two ring- and two pendant-nitrogen atoms. Complexes <B>1</B> and <B>2</B> adopt similar structures, where N<SUB>3</SUB><SUP>−</SUP> and NCO<SUP>−</SUP> are incorporated into the cavity of taec as a bridging group (end-on fashion). The structure of <B>3</B> is substantially different from those of <B>1</B> and <B>2</B> in that each copper is independently coordinated by NCS<SUP>−</SUP>-nitrogen. The spectral and magnetic properties were discussed in relation to the molecular structures.

• 公益社団法人 日本化学会の論文

著者

• Kida Sigeo

  Department of Chemistry Wakayama University

• Murase Ichiro

  Laboratory of Chemistry, College of General Education, Kyushu University

• Mikuriya Masahiro

  Coordination Chemistry Laboratories, Institute for Molecular Science

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