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A ternary nickel(II) Schiff base complex containing di-anionic and neutral forms of a dithiocarbazate Schiff base


Md Yusof, Enis Nadia and Muhammad Nasri, Nazhirah and Ravoof, Thahira B. S. A. and Tiekink, Edward R. T. (2019) A ternary nickel(II) Schiff base complex containing di-anionic and neutral forms of a dithiocarbazate Schiff base. Molbank, 2019 (2). art. no. M1057. pp. 1-7. ISSN 1422-8599


The title NiII complex, Ni(L)(LH2) (1), where LH2 is S-2-methybenzyl-β-N-(2-hydroxy-3-methoxybenzylmethylene) dithiocarbazate, was isolated from the reaction of Ni(acetate)2·4H2O and two molar equivalents of LH2. The complex was characterized by elemental analysis, spectroscopy (IR and UV) as well as by a single-crystal X-ray structure determination. The nickel(II) center is coordinated within a cis-NOS2 donor set that defines a square planar geometry. Three donor atoms, i.e., N, O, and S, are provided by a doubly deprotonated S-2-methybenzyl-β-N-(2-hydroxy-3-methoxybenzylmethylene) dithiocarbazate ligand while the fourth donor, i.e., a thione-S, comes from the neutral form of the dithiocarbazate ligand. In the LH2 ligand, an intramolecular hydroxy-O-H⋯N(imine) hydrogen bond is found. There is also an intra-ligand, charge assisted amine-N-H⋯O(phenoxide) hydrogen bond. A notable feature of the molecular packing is the formation of supramolecular chains sustained by π…π stacking interactions whereby the interacting rings are the five- and six-membered chelate and methoxybenzene rings. The chains are connected into a three-dimensional architecture by methyl-C-H⋯O(methoxy), methoxy-C-H⋯S(ester), and tolyl-C-H⋯π(tolyl) interactions.

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Official URL or Download Paper: https://www.mdpi.com/1422-8599/2019/2/M1057

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.3390/M1057
Publisher: MDPI
Keywords: Nickel(II); Dithiocarbazate; Hydrogen bonding; π(chelate)⋯π(chelate) interactions; X-ray crystallography
Depositing User: Nabilah Mustapa
Date Deposited: 04 May 2020 16:26
Last Modified: 04 May 2020 16:26
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/M1057
URI: http://psasir.upm.edu.my/id/eprint/38386
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