一种异金属配位聚合物的晶体结构：-聚[[[四水合钴（II）]-μ-吡啶-2,6-二羧酸根合钙（II）-μ-吡啶-2,6-二羧酸根合]二水合物] 。
Crystal structure of a heterometallic coordination polymer: -poly[[[tetra-aqua-cobalt(II)]-μ-pyridine-2,6-di-carboxyl-ato-calcium(II)-μ-pyridine-2,6-di-carboxyl-ato] dihydrate].
作者信息
Lin Jie-Shuang, Zhang Bing-Guang
机构信息
Key Laboratory of Catalysis and Materials Sciences of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan 430074, People's Republic of China.
出版信息
Acta Crystallogr E Crystallogr Commun. 2018 May 18;74(Pt 6):808-811. doi: 10.1107/S2056989018007120. eCollection 2018 Jun 1.
In the crystal of the title polymeric complex, {[CoCa(CHNO)(HO)]·2HO} (), the Co ion is ,,'-chelated by two pyridine-2,6-di-carboxyl-ate anions in a distorted NO octa-hedral geometry, and two carboxyl-ate O atoms of pyridine-2,6-di-carboxyl-ate anions bridge tetra-aqua-calcium(II) units to form polymeric chains propagating along the -axis direction. In the crystal, O-H⋯O and C-H⋯O hydrogen bonds, and offset π-π stacking inter-actions [inter-centroid distances = 3.551 (1) and 3.746 (1) Å] involving inversion-related pyridine rings link the polymeric chains and lattice water mol-ecules to form a supra-molecular three-dimensional framework.
在标题聚合物配合物{[CoCa(C₅H₃NO₄)(H₂O)₄]·2H₂O} （）的晶体中，Co离子由两个吡啶 - 2,6 - 二羧酸根阴离子以扭曲的N₂O₄八面体几何构型进行螯合，且吡啶 - 2,6 - 二羧酸根阴离子的两个羧酸根O原子桥连四水合钙（II）单元以形成沿z轴方向延伸的聚合物链。在晶体中，O—H⋯O和C—H⋯O氢键以及涉及反演相关吡啶环的偏移π - π堆积相互作用[质心间距 = 3.551 (1) 和3.746 (1) Å]将聚合物链和晶格水分子连接起来形成一个超分子三维框架。
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