高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (11): 2017.

• 研究论文 •    下一篇

镍(Ⅱ)、铜(Ⅱ)四氮配合物的合成与晶体结构表征

何奕1, 寇会忠1, 周北川1, 王如骥1, 李亚栋1, 王宏根2   

  1. 1. 清华大学化学系, 北京100084;
    2. 南开大学化学学院, 天津300071
  • 收稿日期:2002-04-03 出版日期:2002-11-24 发布日期:2002-11-24
  • 通讯作者: 寇会忠(1968年出生),男,博士,讲师,从事功能配位化学研究.E-mail:kouhz@mai.ltsinghua.edu.cn E-mail:kouhz@mai.ltsinghua.edu.cn
  • 基金资助:

    清华大学骨干人才支持计划资助

Synthesis and Crystal Structure of Two New Nickel(Ⅱ) and Copper(Ⅱ) Tetraaza Complexes

HE Yi1, KOU Hui-Zhong1, ZHOU Bei-Chuan1, WANG Ru-Ji1, LI Ya-Dong1, WANG Hong-Gen2   

  1. 1. Department of Chemistry, Tsinghua University, Beijing 100084, China;
    2. College of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2002-04-03 Online:2002-11-24 Published:2002-11-24

摘要: 使用大环缩合方法合成了2个新的配合物[NiL]I·0.5H2O[L-=乙酰丙酮缩N,N′-二(2-氨乙基)-1,3-丙二胺阴离子]和[Cu(2,3,2-tet)I2][2,3,2-tet=N,N′-二(2-氨乙基)-1,3丙二胺],并解析了其单晶结构.在[NiL]+配离子中1个六元环上的1个碳原子带有1个单位的负电荷并与相邻的2个C=N双键形成共轭体系.共轭体系的存在使该配合物呈配位反应惰性.在配合物[Cu(2,3,2-tet)I2]中,铜离子配位环境为碘离子配位的4+2拉长八面体构型.

关键词: 四氮大环, 配合物, 晶体结构, 镍,

Abstract: The crystal structures of[NiL]I·0.5H2O (L=12,14-dimethyl-1,4,8,11-tetraazacyclotetradecane-11,13-diene) and[Cu(2,3,2-tet)I2] [2,3,2-tet=N,N′-bis(2-aminoethyl)-1,3-propanediamine] have been determined by single-crystal X-ray diffraction analysis[NiL]I·0.5H2O crystallizes in space group Pbca with Z=16, a=1.806 5(6) nm, b=1.801 7(6) nm, c= 1.972 3(7) nm, R=0.042 6, wR=0.085 7. The asymmetric unit consists of two independent[NiL]+ cations, two iodide anions and one water molecule. The nickel(Ⅱ) ion is coordinated by four nitrogen atoms of the macrocyclic ligand with the Ni-N bond distances ranging from 0.184 8(6)-0.193 0(6) nm. Crystal data for [Cu(2,3,2-tet)I2]: space group P2(1)/n, Z=4, a=0.796 4(2) nm, b=1.114 7(2) nm, c=1.644 2(3) nm, β=91.42(3)°, R=0.034 2, wR=0.085 2. The structure consists of [Cu(2,3,2-tet)I2] monomers with characteristic N4I2 donor sets.

Key words: Tetraaza cycle, Coordination compound, Crystal structure, Nickel, Copper

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