三个3,5-二(4-吡啶)1,2,4-三唑构筑的Co(Ⅱ)配合物的合成,晶体结构及其热稳定性(英文)

Syntheses, Structures and Thermal Stabilities of Three Co(Ⅱ) ComplexesConstructed from 3,5-Bis(4-pyridyl)-1,2,4-triazolyl

采用3,5-二(4-吡啶)1,2,4-三唑(Hbpt)为配体与钴盐反应,在水热法条件下成功合成了3个配合物,分别是:[Co(Hbpt)2(HCOO)2(H2O)2]n·4nH2O(1),[Co(Hbpt)2(HCOO)2(H2O)2]n(2)和[Co(bpt)2(H2O)4]n·2nH2O(3),并通过X-射线单晶衍射和红外对它们进行了表征。配合物1和2均为三斜晶系,P1空间群,配合物3为单斜晶系,P21/c空间群。中心金属Co(Ⅱ)都是六配位,每个Co(Ⅱ)分别与2个Hbpt配体桥联而形成零维的结构单元,这些结构单元通过氢键和π-π堆积弱作用进一步连接而形成三维超分子网络结构。此外,还对配合物1和3的热稳定性做了分析。

Three Co （Ⅱ） complexes constructed from 3,5-bis（4-pyridyl）-1,2,4-triazolyl（Hbpt）, namely [Co（Hbpt）2（HCOO）2（H2O）2]n·4n H2O（1）, [Co（Hbpt）2（HCOO）2（H2O）2]n（2） and [Co（bpt）2（H2O）4]n·2n H2O（3）, have been hydrothermally synthesized and structurally characterized by IR spectroscopy and single crystal X-ray diffraction.The X-ray crystallographic analyses show that all of them present three-dimensional supramolecular frameworks in which crystal configurations are linked by π-π stacking interactions and strong intermolecular hydrogenbonding interactions. In addition, the thermogravimetric analyses（TGA） for complexes 1 and 3 are also discussed.CCDC： 1001364, 1; 1001365, 2; 1001366, 3.