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新型镍、锰5-苯并咪唑酸盐配位聚合物的合成和晶体结构 被引量:1

Synthesis and Crystal Structures of New Nickel(Ⅱ) and Manganese(Ⅱ) Coordination Polymers Containing 5-benzimidazolecarboxylate Ligand
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摘要 用镍和锰的醋酸盐分别与5-苯并咪唑酸进行水热反应合成了2种配位聚合物[Ni(BImC)2]n(1)和[Mn(BImC)2]n(2)(HBImC=5-苯并咪唑酸)。用IR对配位聚合物进行了表征,并测定了配位聚合物1和2的结构。单晶结构表明配位聚合物1的晶体属正交晶系,空间群为Pbcn。配位聚合物2的晶体属单斜晶系,P21/c空间群。化合物1通过配体的桥联作用形成二维畸变(4,4)层状网格。化合物2通过配体的桥联作用形成一维链状配位聚合结构,链与链之间通过N-HO氢键作用形成三维框架结构。 Two coordination polymers of [Ni(BImC)2]n(1) and [Mn(BImC)2]n(2) (BImC=5-benzimidazolecarboxylate) have been hydrothermally prepared by the reaction of M(CH3COO)2·4H2O (M=Ni, Mn) and HBImC, and characterized by IR and single crystal X-ray diffraction structural analyses. 1 crystallizes in the orthorhombic system, and the space group is Pbcn, with the crystal cell parameters α=1.234 1 (4)nm, b=1.519 2 (5) nm, c=1.5167(5) nm, and V=2.843 6(17) nm^3, Z=8, R1=0.046 7, wR2=0.103 5. 2 crystallizes in the monoclinic system with space group P21/c, a=1.747 3(6) nm, b=0.387 84(14) nm, c=2.242 4(8) nm,/3=112.556(4)°, V=1.403 4(9) nm^3, Z=4, R,= 0.042 8, wR2=0.103 0. Complex 1 displays a distorted (4, 4) two-dimensional layer structure. Complex 2 shows a three-dimensional network formed from one-dimensional chains by N-H…O hydrogen bonding interactions. CCDC: 694934. 1: 694935. 2.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2008年第10期1610-1614,共5页 Chinese Journal of Inorganic Chemistry
基金 东南大学引进人才科研启动基金(No.4007041075)。
关键词 配位聚合物 氢键 晶体结构 coordination polymer, hydrogen bond crystal structure
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