Synthesis, characterization and spectroscopic studies of a new ligand [N′-(2-methoxybenzoyl)hydrazinecarbodithioate] ethyl ester and its Mn(II) and Cd(II) complexes: X-ray structural study of Mn(II) complex
作者:Mamata Singh、Vaibhave Aggarwal、Udai P. Singh、Nand K. Singh
DOI:10.1016/j.poly.2008.10.015
日期:2009.1
A new dithioligand [N'-(2-methoxybenzoyl)hydrazinecarbodithioate] ethyl ester (H(2)mbhce, 1) formed complexes [M(Hmbhce)(2)](n) M = Mn(II), Cd(II)} which have been characterized with the help of elemental analyses, magnetic susceptibility measurements, IR, UV-Vis, H-1 and C-13 NMR and mass spectrometry. [Mn(Hmbhce)(2)](n) (2) crystallized in monoclinic system with space group P-21/n. In the polymeric structure of 2, the ligand acts as an uninegative tridentate N(1), O(1), S(3) donor and forms a five membered chelate ring with N(1), C(2) and O(1). The intermediate bond lengths (between single and double bond distances) O(1)-C(2)=1.241(3), N(2)-C(2)=1.325(3), N(1)-N(2)=1.393(2), N(1)-C(8)=1.311(3)angstrom and C(8)-S(3) = 1.704(2) angstrom suggest considerable delocalization of charge which develops slightly aromatic character in the chelate ring. (C) 2008 Elsevier Ltd. All rights reserved.