Transition Metal Complexes of Thiosemicarbazides, Thiocarbohydrazides, and Their Corresponding Carbazones with Cu(I), Cu(II), Co(II), Ni(II), Pd(II), and Ag(I)-A Review

This review focuses on some interesting and recent applications of transition metals towards the complexation of thiosemicarbazides, thiocarbohydrazides, and their corresponding carbazones. We started the review with a description of the chosen five metals, including Cu[Cu(I), Cu(II], Co(II), Ni(II), Pd(II), and Ag(I) and their electronic configurations. The stability of the assigned complexes was also discussed. We shed light on different routes describing the synthesis of these ligands. We also reported on different examples of the synthesis of Cu(I), Cu(II), Co(II), Ni(II), Ag(I), and Pd(II) of thiosemicarbazide and thiocarbohydrazide complexes (until 2022). This review also deals with a summary of the fruitful use of metal complexes of thiosemicarbazones and thiocarbazones ligands in the field of catalysis. Finally, this recent review focuses on the applications of these complexes related to their biological importance.

Automated summary

This review highlights interesting and recent applications of transition metals in the complexation of thiosemicarbazides, thiocarbohydrazides, and their corresponding carbazones. The review discusses the chosen five metals, their electronic configurations, and the stability of the complexes. It also presents different synthesis routes and examples of Cu(I), Cu(II), Co(II), Ni(II), Ag(I), and Pd(II) complexes of thiosemicarbazide and thiocarbohydrazide. Furthermore, the review summarizes the catalytic use of metal complexes of thiosemicarbazones and thiocarbazones ligands, as well as their biological importance.