Zhang Ling-Ling, Li Shi-Kun, Feng Jie, Lin Qiu-Yue
Acta Crystallogr Sect E Struct Rep Online. 2011 Oct 1;67(Pt 10):m1390-1. doi: 10.1107/S1600536811036634. Epub 2011 Sep 14.
The title compound, {[Cd(C(8)H(8)O(5))(C(10)H(8)N(2))]·H(2)O}(n), was obtained by the reaction of cadmium acetate with 2,2'-bi-pyridine and 7-oxabicyclo-(2.2.1)heptane-2,3-dicarb-oxy-lic anhydride. The Cd(II) atom is seven-coordinated in a distorted penta-gonal-bipyramidal configuration, defined by five O atoms from the carboxyl-ate groups of three 7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxyl-ato ligands and two N atoms from the 2,2'-bipyridine ligand. Two O atoms link two Cd(II) atoms, forming a dinuclear center: the Cd-O-Cd bridging angle is 110.19 (6)°. The polymeric structure extends along [100] and is linked by inter-molecular O-H⋯O hydrogen bonds involving the solvent water molecule. Extensive π-π stacking exists between 2,2-bypiridine ligands along [010] with centroid-centroid distance of 3.650 (2) Å
标题化合物{[Cd(C₈H₈O₅)(C₁₀H₈N₂)]·H₂O}ₙ是通过乙酸镉与2,2'-联吡啶和7-氧杂双环-(2.2.1)庚烷-2,3-二羧酸酐反应得到的。Cd(II)原子以扭曲的五角双锥构型七配位，由来自三个7-氧杂双环-[2.2.1]庚烷-2,3-二羧酸根配体的羧酸根基团的五个O原子和来自2,2'-联吡啶配体的两个N原子界定。两个O原子连接两个Cd(II)原子，形成一个双核中心：Cd-O-Cd桥连角为110.19 (6)°。聚合物结构沿[100]方向延伸，并通过涉及溶剂水分子的分子间O-H⋯O氢键相连。沿[010]方向，2,2-联吡啶配体之间存在广泛的π-π堆积，质心间距为3.650 (2) Å
