Acta Chimica Sinica ›› 1999, Vol. 57 ›› Issue (6): 627-634. Previous Articles     Next Articles

Original Articles

双大环配体与铜双核配合物的合成、晶体结构和磁偶合性质

卜显和;陈巍;张若桦;陈荣悌   

  1. 南开大学化学系.天津(300071)
  • 出版日期:1999-06-15 发布日期:1999-06-15

Synthesis, crystal structure and magnetic properties of a new dicopper(II) complex with a bis(macrocyclic) ligand

Bu Xianhe;Chen Wei;Zhang Ruohua;Chen Rongti   

  1. Nankai Univ, Dept Chem.Tianjin(300071)
  • Online:1999-06-15 Published:1999-06-15

A new binuclear copper(II) complex, [Cu~2LBr~2]Br.3H~2O, where L is a new binucleating macrocyclic ligand 2, 6-bis(1, 5, 9- triazacyclododecan-9-ylmethyl) benzoate, has been prepared and characterized by X-ray crystallography. Crystal data: monoclinic, space group P2~1/c, a=1.1666(2), b=1.3541(3), c=2.2750(5)nm, β=99.38 (3)ⅲ, Z=4. The binuclear copper(II) center ions are bridged by a μ - carboxyl group of L and separated by 0.5884nm. Both of the copper(II) ion centers are coordinated by three amine nitrogens of [12] aneN~3 subunit and one oxygen of the carboxyl group, as well as one bromide ion. The copper(II) ion is in the trigonal bipyramid environment. Variable temperature magnetic susceptibility studies indicate that three exists intramolecular antiferro-magnetic coupling (J=-22.49cm^- ^1) between the two copper(II) centers.

Key words: COPPER COMPLEX, DINUCLEAR COMPLEX, CRYSTAL STRUCTURE, ANTIFERROMAGNETISM, NITROGEN HETEROCYCLICS, BENZENECARBOXYLIC ACID P

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