Das, A. K. and Gowda, N. S. and Botoshansky, M. and Sridhar, M. A. and Kaftory, M. and Sashidhara Prasad, J. (2009) A structural investigation of the coordination behaviour of 4,6-dimethylpyrimidine-2-thiol with Zinc (II) at pH 6 – A zwitterionic complex exhibiting unusual ZnS3N2 chromophore in solid state. JOURNAL OF MOLECULAR STRUCTURE, 938 (1-3). pp. 259-262. ISSN 0022-2860
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Complexation between Zn2+ and 4,6-dimethylpyrimidine-2-thiol was attempted with ZnO, ZnSO4 and Zn(OAc)(2) In all cases, the same compound, tris-4,6-dimethylpyrimidine-2-thiolato zinc (II) was generated without anion incorporation It crystallized from methanol in the space group P2(1)/a. Z = 4 The molecular structure exemplifies an uncommon coordination of 3 ligands to Zn(II) through their thiolate centres: one of the ligands is protonated to effectively form a zwitterionic complex, which exhibits capped rectangular pyramidal coordination geometry of an anionic ZnN2S3 chromophore. In crystalline state. the ligand moieties differ in respect of orientations and interactions while in solution they behave as identical components of a symmetric molecule The crystal structure is stabilized by pi stacking and periodic H-bonding interactions along a. The presence of a protonated azomethine N in one ol the ligands is confirmed from the high conductance and acidic pH of an aqueous methanolic solution of the complex (C) 2009 Elsevier B V All rights reserved
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Crystal structures; Thiolpyrimidine complexes; Zinc complexes; Zwitterionic complexes |
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | Users 19 not found. |
| Date Deposited: | 07 Aug 2019 11:12 |
| Last Modified: | 10 Aug 2022 10:46 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/6209 |
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