National Changhua University of Education Institutional Repository : Item 987654321/15155
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 6498/11670
Visitors : 26025032      Online Users : 114
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item:

Title: Mononuclear Zinc(II) and Mercury(II) Complexes of Schiff Bases Derived from Pyrrolealdehyde and Cysteamine Containing Intramolecular NH---S Hydrogen Bonds
Authors: Wu, Kuan-Yi;Hsieh, Chang-Chih;Horng, Yih-Chern
Contributors: 化學系
Keywords: NH-S hydrogen bond;Cysteamine;Schiff base;Pyrrole
Date: 2009-06
Issue Date: 2013-01-07T02:15:57Z
Publisher: Elsevier
Abstract: Two neutral group 12 metal complexes, bis(pyrrol-2-ylmethyleneaminoethylthio)zinc(II) (1) and bis(pyrrol-2-ylmethyleneaminoethylthio)mercury(II) (2), with the (Nimine)2S2 coordination mode were synthesized by using metal-templated Schiff base condensation, and their molecular structures were determined by X-ray diffraction analysis. Complex 1 exhibits a distorted tetrahedral geometry around the metal, whereas the metal center has a bisphenoidal configuration in complex 2. Both mononuclear complexes possess intramolecular NH⋯S hydrogen bonds, as evidenced by IR, 1H NMR and X-ray crystallography. The hydrogen-bond donor (H–Npyrrole) and acceptor (S atom) are coming from different ligands within a single molecule. Complex 2 represents the first example of a mercury complex in the N2S2 coordination mode with intramolecular NH⋯S hydrogen-bond interactions. An investigation of the effects of the NH⋯S hydrogen bonding on the stability of 1 and 2, using an N-methyl pyrrolyl analogue, demonstrated that the N–H hydrogen-bond donor from the pyrrolyl moiety probably played a role in the stability of 1, but not 2.
Relation: J. Organomet. Chem., 694(13): 2085-2091
Appears in Collections:[Department of Chemistry] Periodical Articles

Files in This Item:

File SizeFormat

All items in NCUEIR are protected by copyright, with all rights reserved.


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback