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Cyclohexane-1,2-bis(thiosemicarbazone) (CHTSC) was synthesized via the condensation reactionof cyclohexane-1,2-dione and thiosemicarbazide. Series of metal complexes of the prepared ligand,of general formula [M(CHTSC)(NO3)2], were reported. The prepared coordination complexeswere characterized and their structures elucidated using different techniques. These showedthat all complexes are octahedral geometries. The kinetics of the formation of these complexeshave been investigated using stopped-flow spectrophotometry. These studies revealed that thereactions are completed on the second’s timescale with 1st-order dependence (either on the concentrationof metal salt or on the concentration of CHTSC)

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This study deals with the preparation of Schiff- base ligands from the reaction of salicaldehyde with ethylenediamine in the ratios 1:1 of ligand (1) and 1:2 of ligand (2). Their metal complexes with ions Fe (11), Co (11), Ni (11), and Cu (11) were also prepared. The electronic spectrum of all these complexes and the IR spectrum were studied. The ratios of dissociation of these complexes were investigated via radiation by using mercury lamp in the wavelength of 365 nm. It is noticed that these complexes dissociate slowly during the process of radiation.

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New series of metal ions complexes have been prepared from the new ligand 1,5- Dimethyl-4- (5-oxohexan-2- ylideneamino) -2-phenyl- 1H-pyrazol-3 (2H)-one derived from 2,5-hexandione and 4-aminophenazone. Then, its V(IV), Ni(II), Cu(II), Pd(II), Re(V) and Pt(IV) complexes prepared. The compounds have been characterized by FT-IR, UV-Vis, mass and 1H and 13C-NMR spectra, TGA curve, magnetic moment, elemental microanalyses (C.H.N.O.), chloride containing, Atomic absorption and molar conductance. Hyper Chem-8 program has been used to predict structural geometries of compounds in gas phase, the heat of formation, (binding, total and electronic energy) and dipole moment at 298 K.

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