Por favor, use este identificador para citar o enlazar este ítem: http://repositoriodigital.ipn.mx/handle/123456789/11233
Título : Novel CdCl2 and HgCl2 complexes with 3-monosubstituted and 3,3-disubstituted 1-furoylthioureas: IR and Raman spectra
Palabras clave : IR
CdCl2 and HgCl2 complexes
Thiourea derivative complexes
Fecha de publicación : 16-ene-2013
Editorial : ScienceDirect
Descripción : Two series of coordination complexes of CdCl2 and HgCl2 with 3-monosubstituted and 3,3-disubstituted 1-furoylthioureas were prepared and characterized. These complexes were obtained with a medium to high yield from ethanolic solutions of both ligand and salt. The formed complex results from the salt–ligand interaction with participation of both the salt anion and cation. Information on the coordination chemistry of these complexes was derived from thermal stability data, and IR, Raman and 13C CPMAS NMR spectra. On coordination the electronic structure of these ligands changes as a whole, affecting practically all their vibrational pattern, however, within that complex pattern some vibrations provide valuable information on the nature of the studied complexes. These thiourea derivatives behave as neutral ligands, which coordinate the metal ion through the sulfur atom of the thiocarbonyl group. This fact is supported by the observed frequency shift, to lower values, in the (CS) vibration on the coordination and the appearance of a low frequency Raman line which was assigned to the metal–sulfur stretching, (M–S), in the formed complex. The frequency of the (CO) vibration always increases on complex formation, which discards the participation of the carbonyl group in the coordination process. The complexation takes place preserving the free ligand conformation, established from intra-molecular interactions, particularly in 3-monosubstituted ligands. Such features of the studied ligands and their complexes are also supported by 13C CPMAS NMR spectra. This spectroscopic information correlates with the reported behavior of the ligands in ion selective electrodes. © 2005 Elsevier B.V. All rights reserved.
URI : http://www.repositoriodigital.ipn.mx/handle/123456789/11233
Otros identificadores : Spectrochimica Acta Part A 64 (2006) 961–971
Aparece en las colecciones: Doctorado

Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
2006ThioureasComplexes 1.pdf55.81 kBAdobe PDFVisualizar/Abrir

Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.