Lin Qiu-Yue, Wang Na, Wu Yi-Zhou
Acta Crystallogr Sect E Struct Rep Online. 2010 May 22;66(Pt 6):m705-6. doi: 10.1107/S1600536810017915.
The title polymer, Zn(3)(C(8)H(8)O(5))(2)(C(3)H(3)N(2))(2)(C(3)H(4)N(2))(2), was formed by the reaction of zinc acetate with imidazole and 7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxylic anhydride (norcan-tharidine). One of the two crystallographically unique Zn(II) atoms is four-coordinated by three N atoms of three imidazole ligands, two of which are deprotonated, and by one carboxyl-ate O atom of the demethyl-cantharate anion. The second Zn(II) atom is situated on an inversion centre and is six-coordinated by the bridging O atoms of two symmetry-related demethyl-cantharate anions and by four carboxyl-ate O atoms of the corresponding carboxyl-ate groups. The polymeric crystal structure is additionally stabilized by N-H⋯O hydrogen bonding between the imidazole ligands and carboxyl-ate O atoms.
标题聚合物Zn(3)(C(8)H(8)O(5))(2)(C(3)H(3)N(2))(2)(C(3)H(4)N(2))(2)是由醋酸锌与咪唑和7-氧杂双环[2.2.1]庚烷-2,3-二羧酸酐（去甲斑蝥素）反应形成的。两个晶体学上独特的Zn(II)原子中的一个由三个咪唑配体的三个N原子（其中两个去质子化）和去甲斑蝥酸根阴离子的一个羧酸根O原子四配位。第二个Zn(II)原子位于一个对称中心上，由两个对称相关的去甲斑蝥酸根阴离子的桥连O原子和相应羧酸根基团的四个羧酸根O原子六配位。聚合物晶体结构还通过咪唑配体与羧酸根O原子之间的N-H⋯O氢键得到额外稳定。
