Synthesis and characterization of a Cu(II) complex of 2-benzylmercapto-5-methyl-1,3,4-thiadiazole (C10H10N2S2)¡±

G. E. CAMÍ; M. LIU GONZÁLEZ; F. SANZ RUIZ; M. DEL C. RAMÍREZ DE ARELLANO; R. D. SÁNCHEZ; J. C. PEDREGOSA

JOURNAL OF COORDINATION CHEMISTRY

Taylor & Francis (London-UK)

Año: 2008 vol. 61 p. 3122 - 3133

0095-8972

A Cu(II) complex of 2-benzylmercapto-5-methyl-1,3,4-thiadiazole was synthesized and 20 characterized. The crystal  structure of the copper complex and the free ligand were determined by single-crystal X-ray diffraction at room temperature: {[Cu(C10H10N2S2)2(Cl)2], P1 triclinic, a=8.1450(2)A , b=8.1690(2)A , c=10.8180(3)A , alfa=97.4040(12), beta=101.6270(11), gama=116.1431(14); C10H10N2S2 ligand, Pbca orthorhombic, a=8.7938(7)A  , b=9.6491(7)A , c=25.3552(18)A }. The metal complex framework consists of discrete units that provide 25 crystalline stability through a network of van der Waals contacts. The Cu(II) is coordinated by two chloride ions and two 2-benzylmercapto-5-methyl-1,3,4-thiadiazole monodentate ligands showing a distorted square planar configuration. Both thiadiazole ligands coordinate through the N atom bonded to the benzylthio substituted C atom. The FTIR spectroscopic data are consistent with this structural model. Analysis of the 30 magnetic susceptibility from 5K to room temperature indicates the presence of paramagnetic Cu(II), confirmed by  the EPR spectrum.