THIOLATE VS THIONE COORDINATION IN MODEL COMPLEXES OF ZINC (II) METALLPROTEINS | ||||
| The International Conference on Chemical and Environmental Engineering | ||||
| Article 2, Volume 3, 3rd International Conference On Chemical & Environmental Engineering, May 2006, Page 226-232 PDF (356.98 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/iccee.2006.40997 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Ibrahim M. M.; Shaban Sh. Y. | ||||
| Faculty of Education, Tanta University. | ||||
| Abstract | ||||
| ABSTRACT We synthesized and characterized a new S4-based zinc complex with thione [TtixylZnSTmxyl] 2 as sulfur-donor ligand. Structural determination by X-ray diffraction indicated that the coordination geometry around zinc atom is close to regular tetrahedral with S─Zn(1)─S bond angles in the range 106-113o. The reactivity studies showed that complex 2 is much less susceptible to methylation than that of complex [TtixylZnSC6H5] 1, which contains thiolate as sulfur-donor ligand. This decrease in the nucleophilicity could be explained by electronic effects of thione versus thiolate. | ||||
| Keywords | ||||
| Syntheses; Zinc(II) complexes; Repair protein; biomimetics; methylation | ||||
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