【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。更多还原

【Abstract】 In this work, we report the thermal synthesis of two 3 d-4 f heterometallic coordination polymers: {[Yb₂Cu₄（pdc）₅（bpy）₄]·5.5 H₂O}_n（1） and {[HoCu₃（pdc）₃（bpy）₃]·4 H₂O}_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 P2/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.更多还原