Crystal structures and thermal properties of two transition-metal compounds {[Ni(DNI)2(H2O)3][Ni(DNI)2 (H 2O)4]}•6H2O and Pb(DNI)2(H 2O)4 (DNI = 2,4-Dinitroimidazolate)

Zhang, Guo-Fang and Cai, Mei Yu and Jing, Ping and He, Chong and Li, Ping and Zhao, Feng Qi and Li, Ji Zhen and Fan, Xue Zhong and Ng, Seik Weng (2010) Crystal structures and thermal properties of two transition-metal compounds {[Ni(DNI)2(H2O)3][Ni(DNI)2 (H 2O)4]}•6H2O and Pb(DNI)2(H 2O)4 (DNI = 2,4-Dinitroimidazolate). Journal of Chemical Crystallography, 40 (3). pp. 278-282. ISSN 1074-1542

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Official URL: https://doi.org/10.1007/s10870-009-9646-5

Abstract

Two transition-metal compounds derived from 2,4-dinitroimidazole, {[Ni(DNI)2(H2O)3][Ni(DNI)2(H 2O)4]}•6H2O, 1, and Pb(DNI) 2(H2O)4, 2, were characterized by elemental analysis, FT-IR, TG-DSC and X-ray single-crystal diffraction analysis. Crystal data for 1: monoclinic, space group C2/c, a = 26.826(3), b = 7.7199(10), c = 18.579(2) Å, β = 111.241(2)° and Z = 4; 2: monoclinic, space group C2/c, a = 6.5347(6), b = 17.1727(17), c = 14.1011(14) Å, β = 97.7248(10) and Z = 4. Compound 1 contains two isolated nickel centers in its structure, one being six-coordinate and another five-coordinate. The structure of 2 contains a lead (II) center surrounded by two chelating DNI ligands and four water molecules in distorted square-antiprism geometry. The abundant hydrogen bonds in two compounds link the molecules into three-dimensional network and stabilize the molecules. The TG-DSC analysis reveals that the first step is the loss of water molecules and the final residue is the corresponding metal oxides and carbon.

Item Type: Article
Uncontrolled Keywords: 2,4-Dinitroimidazole; Crystal structure; Lead(II) compound; Nickel(II) compound; Thermal decomposition behavior
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Mr Faizal 2
Date Deposited: 14 Jan 2015 02:06
Last Modified: 13 Nov 2019 00:58
URI: http://eprints.um.edu.my/id/eprint/11998

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