%0 Journal Article
%T trans-Tetraaquabis(isonicotinamide-¦ÊN1)zinc bis(3-hydroxybenzoate) tetrahydrate
%A Ibrahim G£¿ker Zaman
%A Nagihan £¿aylak Deliba£¿
%A Hacali Necefo£¿lu
%A Tuncer H£¿kelek
%J Acta Crystallographica Section E
%D 2013
%I International Union of Crystallography
%R 10.1107/s1600536813006466
%X The asymmetric unit of the title compound, [Zn(C6H6N2O)2(H2O)4](C7H5O3)2¡¤4H2O, contains half of the complex cation with the ZnII ion located on an inversion center, a 3-hydroxybenzoate counter-anion and two uncoordinating water molecules. Four water O atoms in the equatorial plane around the ZnII ion [Zn¡ªO = 2.089 (2) and 2.128 (2)  ] form a slightly distorted square-planar arrangement and the distorted octahedral geometry is completed by the two N atoms [Zn¡ªN = 2.117 (2)  ] from two isonicotinamide ligands. In the anion, the carboxylate group is twisted from the attached benzene ring at 9.0 (2)¡ã. In the crystal, a three-dimensional hydrogen-bonding network, formed by classical O¡ªH...O and N¡ªH...O and weak C¡ªH...O hydrogen bonds, consolidates the crystal packing, which exhibits ¦Ð¨C¦Ð stacking between the benzene and pyridine rings, with centroid¨Ccentroid distances of 3.458 (2) and 3.609 (2)  . One of the two H atoms of each uncoordinating water molecule is disordered over two orientations with an occupancy ratio of 0.60:0.40.
%U http://scripts.iucr.org/cgi-bin/paper?S1600536813006466