Coordination assemblies of rigid–flexible 1,3-bis(5-(pyridine-2-yl)-1,2,4-triazole-3-yl)propane ligands with MCl2 (M = Fe, Co, Cu or Zn): structural diversity and mass spectra
Coordination assemblies of rigid–flexible 1,3-bis(5-(pyridine-2-yl)-1,2,4-triazole-3-yl)propane ligands with MCl2 (M = Fe, Co, Cu or Zn): structural diversity and mass spectra
复制标题
DOI：
10.1007/s11243-017-0158-4
复制
发表时间：
2017-07
影响因子：
1.7
通讯作者：
Xu-hong Pang;Chunyue Shu;Hai‐Ye Li;Hedong Bian;Han‐Fu Liu;Fuping Huang
中科院分区：
文献类型：
--
作者：
Xu-hong Pang;Chunyue Shu;Hai‐Ye Li;Hedong Bian;Han‐Fu Liu;Fuping Huang
1，3-双刚性-柔性N-杂环的反应（5-（吡啶-2-基）-1，2，4-三唑-3-基）丙烷（H2 L）与MCl 2（M = Fe，Co，Cu或Zn）分别得到配合物{[Fe 2 IIICl 4（H2 L）2]·2Cl}·EtOH·H2O（1），{[Co 3Cl 5（HL）]·H2O}n（2），{[Co 4Cl 4（H2 L）2（H2O）4]·[CoCl 4]2}·H2O（3），[Cu2Cl3（HL）（H2O）]6·5H2O（4），[Cu2IICuICl4（HL）]n（5），{[Zn2Cl2（L）H2O]·H2O}n（6）和[Zn4Cl6（HL）2]（7）。结构分析表明，吡啶三唑配体在这些配合物中具有多种配位模式。配合物1、3、4和7由双核或四核单元的0 D簇组成;配合物2呈现伴随HL−和氯桥的2D网络;配合物5和6显示具有[Cu 3]和[Zn 2]亚基的1D链。此外，对所选配合物的电喷雾质谱性质进行了研究，揭示了这些配合物在溶液中的稳定性和结构状态。这些结果表明，H2 L是一个很好的多连接的连接体，用于构建各种配合物。
Reactions of the rigid–flexible N-heterocycle 1,3-bis(5-(pyridine-2-yl)-1,2,4-triazole-3-yl) propane (H2L) with MCl2(M = Fe, Co, Cu or Zn) gave coordination complexes, {[Fe2IIICl4(H2L)2]·2Cl}·EtOH·H2O (1), {[Co3Cl5(HL)]·H2O}n(2), {[Co4Cl4(H2L)2(H2O)4]·[CoCl4]2}·H2O (3), [Cu2Cl3(HL)(H2O)]6·5H2O (4), [Cu2IICuICl4(HL)]n(5), {[Zn2Cl2(L)H2O]·H2O}n(6) and [Zn4Cl6(HL)2] (7), which have been characterized by single-crystal X-ray diffraction. Structural analysis reveals that the pyridine triazole ligand attains versatile coordination modes in these complexes. Complexes1,3,4and7consist of 0D clusters with binuclear or tetranuclear units; complex2presents a 2D network accompanied by HL−and chloride bridges; complexes5and6show 1D chains with [Cu3] and [Zn2] subunits. In addition, the electrospray ionization mass spectrometry properties of selected complexes were investigated, revealing the stabilities and structural states of these complexes in solution. These results indicate that H2L is an excellent multiconnection linker for the construction of diverse coordination complexes.