Find in Library

The title coordination polymer, {[Zn(H2O)6]0.5[Zn(C8H3O7S)(C5H6N6)]·1.5H2O}n, synthesized under hydrothermal conditions, possesses a one-dimensional tube-like chain structure along [100], with octahedral [Zn(H2O)6]2+ groups (overline1 symmetry) trapped in the pores. The other Zn atom is five-coordinated in a highly distorted trigonal–biyramidal coordination that is defined by two different N atoms from two 1,3-bis(1,2,4-triazol-1-yl)methane (btrm) ligands and three carboxylate O atoms from 5-sulfonatobenzene-1,3-dicarboxylate ligands. The chains carry negative charges, whereas the free [Zn(H2O)6]2+ cations are positively charged. The [Zn(H2O)6]2+ cation is connected with the one-dimensional tubelike chain through weak classical O—H...O and O—H...N hydrogen-bonding interactions as well as through electrostatic interactions. One of the two uncoordinated water molecules exhibits half-occupancy.