A novel copper coordination polymer,{[ Cu(H2L) ( HL) ] ( C1O4) · 3H2O}n {1,H2L = [2,3-f]-pyrazino[1,10]phenanthroline-2,3-dicarboxylic acid) ,was synthesized by the reaction of Cu( ClO4)2 · 6H2O with H2L. The structure was characterized by UV,IR,XRD and elemental analysis. 1 belongs to monoclinic system,space group C2/c with a =3.575 9(13) nm,b =0.962 7(3) nm,c =2.127 5(10) nm,β= 116.106(8)°,V = 6. 577(5) nm3,Z=8,Dc = 1.730g·cm-3,Mr = 856.56,F(000) = 3 480,Μ =0.837 mm-1,R =0.082 6,wR =0.248. Each Cu( II ) is five-coordinated by four nitrogen atoms from H2L and HL,one oxygen atom from other HL,thus defining a distorted square-pyramid geometry. Adjacent Cu( E ) are bridged by the HL ligand to construct 1D chain structure,which is extended to 3D framework through π -π stacking and hydrogen bonds.%Cu(ClO4)2·6H2O与H2L{L=[2,3-f]-吡嗪[1,10]邻菲咯啉-2,3-二甲酸}反应合成了新型一维配位聚合物{ [Cu(H2L) (HL)] (C1O4)· 3H2O}n(1),其结构经UV,IR,XRD和元素分析表征. 1属单斜晶系,空间群C2/c,晶胞参数a=3.575 9(13) nm,b=0.962 7(3)nm,c=2.127 5(10)nm,β=116.106(8)°,V=6.577(5) nm3,Z=8,Dc=1.730 g·cm-3,Mr=856.56,F(000)=3 480,μ=0.837nm-1,R=0.082 6,wR=0.248.Cu2+分别与1个H2L的两个氮原子,2个不同μ2-HL的两个氮原子和一个羧酸氧原子配位,形成畸变四方锥的五配位构型.Cu(Ⅱ)通过HL桥联形成一维链,相邻一维链的芳环π-π堆积和分子间氢键作用使1构筑成三维超分子结构.
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