1,2,3-三唑羧酸铜(Ⅱ)配合物的合成、晶体结构与性质

Synthesis,Crystal Structure and Properties of 1,2,3-Triazole Carboxylate Copper ( Ⅱ) Complexes

通过水热的方法制备了两个新的1,2,3-三唑羧酸铜配合物:[Cu(L^1)_2·2H_2O](1)和[Cu(L^2)_2]_n(2)(HL^1=4-苯基-1,2,3-三唑-1-乙酸,HL^2=4-苯基-1,2,3-三唑-2-乙酸),并利用红外光谱、质谱(MS)、核磁共振氢谱(~1H NMR)、元素分析、X-射线单晶衍射、X-射线粉末衍射和热重分析进行了表征。晶体结构表明:配合物1中,每一个单核分子通过分子间氢键作用形成二维层状结构。配合物2中,铜原子通过与羧基上的氧原子采用顺-反双齿桥联,形成了二维的网状结构,进一步通过每层网状结构间的π-π堆积作用形成三维超分子结构。磁性测试结果表明配合物2在低温下表现为铁磁性相互作用。

Two new complexes [Cu（ L1）2·2 H2O]（ 1） and [Cu（ L2）2]n（ 2）（ HL1=（ 4-phenyl-1,2,3-triazole-1-yl） acetic acid, HL2=（ 4-phenyl-1,2,3-triazole-2-yl） acetic acid） were synthesized by hydrothermal method and characterized by IR spectrum,mass spectrometry（ MS）,1 H NMR,elemental analysis,X-ray single crystal diffraction,X-ray powder diffraction and thermogravimetric analysis. In complex 1,it shows a mononuclear structure and a 2D layered network formed by the intermolecular hydrogen bonds between the chains. In complex 2,the anions via the carboxyl O atom and the triazole ring N atom bridge Cu to extend into a 2D network structure,and further to form a 3D supramolecular structure through π-π stacking interaction in the crystal structure. Furthermore,the magnetic results indicate that the complex 2 is ferromagnetic coupling at low temperature.