A novel three-dimensional Zn-II coordination polymer with 1,3,5-tris(imidazol-1-ylmethyl)benzene and cyclohexane-1,3,5-tricarboxylate ligands

作者：Zhong Kai Long^*

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2014, 70(2): 189-193.

DOI：10.1107/S2053229613034347

• crystal structure
• three-dimensional Zn-II coordination polymer
• 1,3,5-tris(imidazol-1-ylmethyl)benzene
• cyclohexane-1,3,5-tricarboxylate
• supramolecular assembly
• metal-organic frameworks

In the Zn-II compound poly[[bis(mu(3)-cyclohexane-1,3,5-tricarboxylato) bis[mu(3)-1,3,5-tris(imidazol-1-ylmethyl)benzene]trizinc(II)] hexahydrate], {[Zn-3(C18H18N6)(2)(C9H9O6)(2)]center dot 6H(2)O}(n), based on mixed 1,3,5-tris(imidazol-1-ylmethyl) benzene and cyclohexane-1,3,5-tricarboxylate ligands, there are two types of crystallographically independent Zn-II centres, one in a general position and one on a crystallographic twofold axis. They have similar fourfold distorted tetrahedral coordination geometries, ligated by two monodentate carboxylate groups from two cyclohexane-1,3,5-tricarboxylate ligands and by two N atoms from two 1,3,5-tris(imidazol-1-ylmethyl) benzene ligands. The cyclohexane-1,3,5-tricarboxylate anions link the Zn-II cations to generate a two-dimensional layered metalorganic structure running parallel to the ((2) over bar 01) plane. Adjacent layers are further connected by tripodal 1,3,5-tris(imidazol-1ylmethyl) benzene ligands, resulting in a three-dimensional network. The solvent water molecules are linked to the cyclohexane-1,3,5-tricarboxylate ligands via water-carboxylate O-H center dot center dot center dot O hydrogen bonds.

• 出版日期2014-2