Studies on Copper(II) Complex Derived from Thiosemicarbazide and Ninhydrin
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Date
2007-07
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Addis Ababa Universty
Abstract
Anew ON donor ligand was synthesized by reacting ninhydrin with thiosemicarbazide.
MS, NMR (1H, 13C, DEPT, HSQC, and HMBC) and UV-VIS spectra proved the
formation of a new heterocyclic compound initially due to 1:1condensation between
ninhydrine and thiosemicarbazide and subsequently due to hydration /tautomerization
and cyclization of the thiosemicarbazone. The ligand formed a pale green Cu(II)
complex in ethanoic medium.The complex was characterized by analytical, conductance,
spectral (IR,UV-Vis) and magnetic susceptibility data . The data suggested the formation
of a 1:2 (Cu(II) : ligand) complex with the formula [CuL2]Cl2 in which the ligand
behaved as a neutral ON donor involving exocyclic carbonyl oxygen and heterocyclic
ring nitrogen as coordinating centers. Square planer geometry was proposed for the
complex
Description
Keywords
Thiosemicarbazide and Ninhydrin