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Synthesis and Crystal Structure of a Novel Tetranuclear Zinc(Ⅱ) Coordination Polymer [Zn4(o-bda)4(p-pbim)4]n
引用本文:杨燕,曾明华,张来军,梁宏.Synthesis and Crystal Structure of a Novel Tetranuclear Zinc(Ⅱ) Coordination Polymer [Zn4(o-bda)4(p-pbim)4]n[J].结构化学,2009,28(7):785-788.
作者姓名:杨燕  曾明华  张来军  梁宏
作者单位:Department;Chemistry;Biology;Yulin;Teachers';College;School;Chemical;Engineering;Guangxi;Normal;University;Shangrao;
基金项目:supported by the NNSFC (No. 30460153, 20561001);;NSF of Guangxi Province (No. 0447019);;the Teaching and Research Award Program for Outstanding Young Teachers in Higher Education Institutions of Chinese Ministry of Education
摘    要:A novel tetranuclear zinc(H) coordination polymer Zn4(o-bda)a(p-pbim)4]n 1 (p-pbim = 4-pyridylbenzimidazole, o-bda2 = o-phenylenediacetic acid dianion) has been synthesized by a hydrothermal method and characterized by elemental analysis, IR and X-ray singlecrystal diffraction. The title complex crystallizes in monoclinic, space group of P21/n with α = 14.231(1), b = 16.257(1), c = 16.794(1) ]k, β = 100.26(1)°, V = 3823.1(2)A3, Z = 8, Dc = 1.573 g/cm^3,β = 1.321 mm^-1, F(000) = 1856, R = 0.0420 and wR = 0.111. The Zn(1) atom assumes a distorted trigonal bipyramidal geometry, involving three carboxyl O atoms from two different o-bda ligands and two N atoms from two p-pbim ligands. The Zn(2) atom is coordinated by two oxygens from two distinct bda2- anions and two nitrogen atoms from two p-pbim ligands to form a distorted tetrahedral geometry. The Zn(Ⅱ) atoms are alternately interlinked by o-bda ligands in bis-monodentate or chelating-bidentate and monodentate modes into one-dimensional undulate chains along axis c with the adjacent Zn…Zn distances of 8.32 and 8.47 A. Such neighboring chains are further extended into a 1D bi-chain structure with two different subrings A and B, which are 32- and 14-membered rings through interchain p-pbim ligands. There exists a 2D supramolecular network linked by intermolecular hydrogen-bonding interactions between the uncoordinated carboxylate 0(4) atom or coordinated carboxylate 0(7) atom and the uncoordinated imidazolyl N(2) and N(5) atoms with the O...N distances to be 2.695 and 2.807A.

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Synthesis and Crystal Structure of a Novel Tetranuclear Zinc(Ⅱ) Coordination Polymer [Zn4(o-bda)4(p-pbim)4]n
YANG Yan,ZENG Ming-Hua,ZHANG Lai-Jun,LIANG Hong.Synthesis and Crystal Structure of a Novel Tetranuclear Zinc(Ⅱ) Coordination Polymer [Zn4(o-bda)4(p-pbim)4]n[J].Chinese Journal of Structural Chemistry,2009,28(7):785-788.
Authors:YANG Yan  ZENG Ming-Hua  ZHANG Lai-Jun  LIANG Hong
Abstract:A novel tetranuclear zinc(Ⅱ) coordination polymer Zn4(o-bda)4(p-pbim)4]n 1(p-pbim=4-pyridylbenzimidazole,o-bda2-=o-phenylenediacetic acid dianion) has been synthe-sized by a hydrothermal method and characterized by elemental analysis,IR and X-ray single-crystal diffraction.The title complex crystallizes in monoclinic,space group of P21/n with a=14.231(1),b=16.257(1),c=16.794(1) (A), β=100.26(1)°,V=3823.1(2) (A)3,Z=8,Dc=1.573 g/cm3,μ=1.321 mm-1,F(000)=1856,R=0.0420 and wR=0.111.The Zn(1) atom assumes a distorted trigonal bipyramidal geometry,involving three carboxyl O atoms from two different o-bda ligands and two N atoms from two p-pbim ligands.The Zn(2) atom is coordinated by two oxygens from two distinct bda2- anions and two nitrogen atoms from two p-pbim ligands to form a distorted tetrahedral geometry.The Zn(Ⅱ) atoms are alternately interlinked by o-bda ligands in bis-monodentate or chelating-bidentate and monodentate modes into one-dimensional undulate chains along axis c with the adjacent Zn…Zn distances of 8.32 and 8.47 (A).Such neighboring chains are further extended into a 1D bi-chain structure with two different subrings A and B,which are 32-and 14-membered rings through interchain p-pbim ligands.There exists a 2D supramolecular network linked by intermolecular hydrogen-bonding interactions between the uncoordinated carboxylate O(4) atom or coordinated carboxylate O(7) atom and the uncoordinated imidazolyl N(2) and N(5) atoms with the O…N distances to be 2.695 and 2.807(A).
Keywords:zinc complex  synthesis  crystal structure  
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