The department of chemistry at the university of Basrah has organized a doctoral dissertation defense entitled: Synthesis, Characterization and Electrochemical Study of some Transition Metal Organo Chalcogenide Complexes, resented by Dalal Hameed Abdulrazaq.
The study work of synthesis novel transition metals organic chalcogenide complexes has been done for some transition metals. Structure characterization and different applications of these new complexes have been done by spectroscopic and other available techniques, such as FT-IR, UV-vis, 1HNMR, 13CNMR, C.H. N. analysis, mass spectra, magnetic effective moment, cyclic voltammograms, conductance metric and thermal gravimetric analysis.
Part one: New series chalcogenide complexes of Co(II), Ni(II), Cu(II), and Zn (II) ions were derived from the novel thiourea compounds such as N-((6-aminopyridin-2-yl) carbamothioyl)-3-methyl-2-nitrobenzamide (L1), N-((6-aminopyridin-2-yl) carbamothioyl)-2,6-dimethoxybenzamide (L2), and N-((6-aminopyridin-2-yl)carbamothioyl)-4-chloro-3-nitrobenzamide (L3) ligands were prepared. Two types of the element complexes were synthesized and investigated, the chloride as well as acetate compounds through employing different mole ratios 1:1 (L:M) and 2:1 (L:M) using metal chloride and metal acetate salts to gain [(L)MCl2] and [(MNEC-H)2M] structures and New series complexes of Co(II), Ni(II), Cu(II), Zn (II) and V(IV) ions were derived from the novel thiosemicarbazone compound (E)-4-methyl-3-nitro-N-(2-(1-(pyridine-2-yl)ethylidene)hydrazine-1-carbonothioyl) benzamide (L4) ligand
Part two: This work is a divided into two series: The first series described the synthesis of a novel series of 4-(para-substituted phenyl)-1,2,3-selenadiazole adducts of [VO(acac)2] with a general formula of [VO(acac)2DS] Bis-(acetylacetone) oxovanadium(IV) (para-substituted phenyl1,2,3-Selenadiazole) were obtained by the stirring of 4-(para-substituted phenyl)-1,2,3-selenadiazole with [VO(acac)2] complex. The second series described the synthesis of a novel series of 4-(para-substituted phenyl)-1,2,3-selenadiazole adducts of N,N′-Bis(salicylidene)-o-phenylenediamine Vanadium(IV) oxide complex [VO-L.DS] were obtained by the stirring of 4-(para-substituted phenyl)-1,2,3-selenadiazole with [VO-L] complex. A series of 4-(para-substituted phenyl)-1,2,3-selenadiazole adducts of [VO(acac)2] were studied by density functional theory (DFT) calculations. The 4-(para-substituted phenyl)-1, 2, 3-selenadiazole molecules have been selected to be bound with vanadium atom in [VO(acac)2] through Se, N2 and N3. The resulting adducts have been investigated in two geometries (cis and trans) to show the effect of such structural change on the electronic properties of the studied adducts. The optimized geometries, (binding and reorganization) energies and the spatial distribution of the highest molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of the adducts are presented and proved theoretical compared with practical.
