摘要
水热法合成了两例3d-4f异金属配位聚合物:{[Yb2Cu4(pdc)5(bpy)4] 5.5H2O}n(1)和{[HoCu3(pdc)3(bpy)3] 4H2O}n(2);H2pdc=吡啶-2,6-二羧酸,bpy=4,4′-联吡啶)。对两例化合物进行了红外、元素分析和X-射线单晶衍射等表征。化合物1和2均属单斜晶系,空间群都为P2/c,晶胞参数分别为a=1.838 0(4)nm,b=1.091 6(2)nm,c=2.627 9(8)nm,β=132.542(18)°;a=2.345 8(5)nm,b=1.036 4(2)nm,c=2.166 9(4)nm,β=105.16(3)°。晶体结构解析显示化合物1是二维层状结构,由Yb2(pdc)5二聚体和Cu(bpy)2链两种模块构筑而成,而化合物2的三维网状结构由Ho(pdc)3单体和Cu(bpy)2链通过吡啶羧酸的羧基桥连形成。
In this work,we report the thermal synthesis of two 3d-4f heterometallic coordination polymers:{[Yb2Cu 4(pdc)5(bpy)4] 5.5H2O}n(1)and{[HoCu 3(pdc)3(bpy)3] 4H2O}n(2)(H2pdc=pyridine-2,6-dicarboxylic acid,bpy=4,4′-bipyridine).The two polymers were characterized by IR,elemental analysis and X-ray single crystal diffraction.Both 1 and 2 crystallize in monoclinic space group P 2/c,with the crystal cell parameters for 1:a=1.838 0(4)nm,b=1.091 6(2)nm,c=2.627 9(8)nm,β=132.542(18)°;and for 2:a=2.345 8(5)nm,b=1.036 4(2)nm,c=2.166 9(4)nm,β=105.16(3)°.Crystal structure analysis results showed that compound 1 was a two-dimensional layered structure constructed by two modules,Yb2(pdc)5 dimer and Cu(bpy)2 chain,whereas the three-dimensional network structure of 2 was formed by Ho(pdc)3 monomer and Cu(bpy)2 chain through the carboxyl bridge of pyridine-2,6-dicarboxylate.
作者
张漫波
郑少九
肖卓杰
雷凯斌
宋丽华
梁福沛
胡瑞祥
ZHANG Man-bo;ZHENG Shao-jiu;XIAO Zhuo-jie;LEI Kai-bin;SONG Li-hua;LIANG Fu-pei;HU Rui-xiang(Key Laboratory of Chemical Biology&Traditional Chinese Medicine Research(Ministry of Education),National Demonstration Center for Experimental Chemistry and Chemical Engineering Education,College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,China;School of Chemistry and Pharmaceutical Sciences,Guangxi Normal University,Guilin 541004,China;Shenyang Center of Geological Survey,China Geological Survey,Shenyang 110032,China)
出处
《湖南师范大学自然科学学报》
CAS
北大核心
2019年第5期65-72,共8页
Journal of Natural Science of Hunan Normal University
基金
湖南省教育厅科研项目(17C0948)
化学生物学与中药分析教育部重点实验室开放基金项目(KLCBTCMR 201808)
湖南省大学生创新实验项目(2018037)
