Chloride Complexation with Thiosemicarbazone Metal Complexes. A Solid State Study

Abstract

A solid state study of the chloride complexation ability of a series of salicylaldehyde thiosemicarbazone Ni(II) complexes is presented. Complexes of general formula [Ni(5-X-HSalTSC)PPh₃]Cl, where 5-X-HSalTSC⁻  represent the monoanion of 5-X-salicylaldhehyde thiosemicarbazones (with X = MeO, Br, NO₂), were studied in comparison with the analog neutral complex [Ni(5-NO₂-SalTSC)PPh₃]. The crystal structure of the compounds show that the coordinated thiosemicarbazones chelate the choride anions through two N–H hydrogen bonds.

Keywords:

• Anion complexation
• Crystal engineering
• Crystal structure
• Thiosemicarbazones

Acknowledgements

P.X. G.-R. would like to thank CONACYT for Ph.D scholarship. To Gabriela Salcedo for technical assistance. The authors are grateful to CONACYT (40332-Q) and DGAPA-UNAM (IN114605) for financial support.