Authors: Dhouha Ben Hassan Walid Rekik Fedia Ben Mefteh Houcine Naïli
Publish Date: 2016/12/29
Volume: 127, Issue: 2, Pages: 1553-1565
Abstract
The combination between piperazine nitrate anions and nickel/zinc metals provided two new hybrid compounds with the general formula C4H12N22MIIH2O6NO36 MII Ni 1 and Zn 2 Their characterization is performed through FTIR spectroscopy and singlecrystal Xray diffraction which gives as a result isotype crystal structures according to the triclinic system space group Pī built from isolated metallic cations coordinated by six water molecules in a distorted octahedral environment MIIH2O62+ free nitrate anions and protonated piperazine related together through a hydrogen bond network These bonds together with other attractive forces being responsible for the crystal formation were examined using densityfunctional theory electron density and the noncovalent interaction plot technique The thermal behavior of the two materials studied by thermogravimetric analysis and thermaldependent Xray diffraction analysis starts with the dehydration step proceeding differently according to the used metal The total decomposition leads to the formation of metal oxides NiO and ZnO In order to evaluate their biological activity the two hybrids have been screened against bacteria and fungi and the findings have been reported and explainedSpecial thanks are expressed to Pr Alberto OterodelaRoza National Institute for Nanotechnology National Research Council of Canada for the contribution in the NCI calculations AOR thanks the Spanish Malta/Consolider initiative No CSD200700045 and Dr Thierry Bataille Ecole Nationale Supérieure de Chimie de Rennes France for the assistance in the TDXD measurements AOR acknowledges Dr Thierry Roisnel Centre de diffractométrie X CDIFX Institue des sciences chimiques de Rennes ISCR université de Rennes 1 France for supplying singlecrystal data collection
Keywords: