Synthesis of Novel Tridentate 5-Arylazosalicylaldehyde Thiosemicarbazone Derivatives and Their Complexes with Copper(II)

Herein, novel 5-arylazosalicylaldehyde thiosemicarbazone derivatives (H2L1-12) and their copper(II) complexes have been synthesized and characterized by NMR, IR and UV-Vis spectra and TGA/DTA. The accumulated data exhibit that thiosemicarbazone derivatives bind with copper ion via the deprotonated phenolic-OH, azomethine-N and deprotonated thiol-SH groups. Accordingly, composition of the complexes can be presented as CuL center dot H2O. The TGA analysis of Cu(II) complexes have revealed their thermal stability up to ca. 170 degrees C.

Automated summary

Novel 5-arylazosalicylaldehyde thiosemicarbazone derivatives and their copper(II) complexes have been synthesized and characterized, showing good thermal stability in TGA analysis. The complexes bind with copper ion via various functional groups, forming CuL·H2O composition.