链状聚[三（μ(2)-1-氢苯并咪唑-5-羧酸根）铕(III)]
catena-Poly[tris-(μ(2)-1H-benzimidazole-5-carboxyl-ato)europium(III)].
作者信息
Gao Junlin, Wang Jun, Dai Chuntao
机构信息
Zhongshan Polytechnic, Zhongshan, Guangdong 528404, People's Republic of China.
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2010 Dec 15;67(Pt 1):m75. doi: 10.1107/S1600536810051706.
In the title one-dimensional coordination polymer, Eu(C(8)H(5)N(2)O(2))(3), the Eu(III) ion is eight-coordinated by the carboxyl-ate O atoms of six ligands in a distorted monocapped penta-gonal-bipyramidal geometry. The ligands link Eu(III) ions, forming helical chains parallel to the c axis, with Eu⋯Eu separations of 4.0678 (11) Å. The chains are further inter-connected by N-H⋯N hydrogen bonds into a three-dimensional supra-molecular network. The crystal studied was a racemic twin, as suggested by the Flack parameter of 0.367 (14).
在一维配位聚合物[Eu(C₈H₅N₂O₂)₃]ₙ中，Eu(III)离子由六个配体的羧酸根O原子以扭曲的单帽五角双锥几何构型进行八配位。这些配体连接Eu(III)离子，形成平行于c轴的螺旋链，Eu⋯Eu间距为4.0678(11) Å。这些链通过N—H⋯N氢键进一步相互连接，形成三维超分子网络。如Flack参数0.367(14)所示，所研究的晶体是一个外消旋孪晶。
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