A. Matesanz, Carolina Hernández, P. Souza
Feb 1, 2014
Citations
0
Influential Citations
10
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract Preparation and characterization of a novel 2,6-diacetylpyridine mono(4-methoxyphenyl-thiosemicarbazone), H 2 L, is described. Treatment of H 2 L with PdCl 2 (PPh 3 ) 2 gave the neutral mononuclear complex [PdL(PPh 3 )]. Both compounds have been characterized by elemental analysis and FAB + spectrometry and by IR and 1 H NMR spectroscopy. Recrystallization of [PdL(PPh 3 )] in DMSO led to the isolation of two solvatomorphic forms of this compound which were studied by X-ray crystallography. In each solvatomorph, the thiosemicarbazone ligand acts as dianionic [CNS] tridentate donor coordinating to the palladium(II) ion in a square planar geometry through the iminic nitrogen atom, the sulfur atom and one ortho carbon atom of the pyridine ring and the fourth site is occupied by P atom from the PPh 3 coligand. The overall molecular conformation of the two solvatomorphs is very similar and the largest difference lies in the orientation of the methyl group of the 4-methoxyphenyl substituent with respect to the sulfur atom.