Poly[bis(1H-imidazole)bis(μ2-1H-imidazolido)bis(μ2-7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylato)trizinc(II)]
نویسندگان
چکیده
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)](n), 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.
منابع مشابه
Poly[bis(1H-imidazole)(μ3-7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylato)cadmium(II)]
The title compound, [Cd(C(8)H(8)O(5))(C(3)H(4)N(2))(2)](n), was synthesized by the reaction of 7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxylic anhydride, cadmium acetate and imidazole. The Cd(II) atom is seven-coordinated in a distorted penta-gonal-bipyramidal configuration by five O atoms from carboxyl-ate groups of three 7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxylate ligands and two N atoms from ...
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In the structure of the title complex, (C(7)H(7)N(2)S)(2)[Cd(C(8)H(8)O(5))(2)]·6H(2)O, the Cd(II) atom is located on an inversion center and is O,O',O''-chelated by two symmetry-related 7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxyl-ate ligands in a distorted octa-hedral geometry. The 2-amino-benzothia-zolium cation links with the Cd complex anion via N-H⋯O hydrogen bonding. Extensive O-H⋯O and N-H...
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