scholarly journals Transition metal complexes with thiosemicarbazide-based ligands, part 47: Synthesis, physicochemical and voltammetric characterization of iron(III) complexes with pyridoxal semi-, thiosemi- and S-meth

2003 ◽  
Vol 68 (12) ◽  
pp. 929-942 ◽  
Author(s):  
Violeta Jevtovic ◽  
Ljiljana Jovanovic ◽  
Vukadin Leovac ◽  
Luka Bjelica
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
High Spin ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Solution Equilibria ◽  
Electrode Processes ◽  
Voltammetric Study

The reaction of warm EtOH solutions of FeX3.nH2O (X=Cl, NO3) with tridentate ONX (X=O, S, N) pyridoxal semi-, thiosemi- and S-methylisothiosemicabazones (H2L1, H2L2, H2L3, respectively) yielded high-spin octahedral mono- and bis(ligand) complexes of the formula [Fe(H2L1-3)Cl2(H2O)]Cl,[Fe(HL1,2)2]Cl.nH2O and [Fe(H2L3)(HL3)]NO3)2.H2O. The compounds were characterized by elemental analysis, conductometric and magnetochemical measurements, IR and UV-Vis spectra. Besides, a detailed voltammetric study of the complexes was carried out in DMF solution in the presence of several supporting electrolytes, to characterize the nature of the electrode processes and solution equilibria.

scholarly journals Transition metal complexes with thiosemicarbazide-based ligands. Part 60. Reactions of copper(II) bromide with pyridoxal S-methylisothiosemicarbazone (PLITSC). Crystal structure of [Cu(PLITSC−H)H2O]Br•H2O

2014 ◽  
Vol 79 (3) ◽  
pp. 291-302 ◽  
Author(s):  
Vukadin Leovac ◽  
Ljiljana Vojinovic-Jesic ◽  
Sonja Ivkovic ◽  
Marko Rodic ◽  
Ljiljana Jovanovic ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Analysis ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Structural Characterization ◽  
Electronic Spectra ◽  
Square Planar

The synthesis and structural characterization of a square-planar copper(II) complex with pyridoxal S-methylisothiosemicarbazone (PLITSC) of the formula [Cu(PLITSC?H)H2O]Br?H2O (1) as the first Cu(II) complex with monoanionic form of this ligand were described. Complex 1 together with two previously synthesized complexes [Cu(PLITSC)Br2] (2) and [Cu(PLITSC)Br(MeOH)]Br (3) were characterized by elemental analysis, IR and electronic spectra and also by the methods of thermal analysis, conductometry and magnetochemistry.

scholarly journals Transition metal complexes with thiosemicarbazide-based ligands, Part 58. Synthesis, spectral and structural characterization of dioxovanadium(V) complexes with salicylaldehyde thiosemicarbazone

2011 ◽  
Vol 76 (6) ◽  
pp. 865-877 ◽  
Author(s):  
Ljiljana Vojinovic-Jesic ◽  
Vukadin Leovac ◽  
Mirjana Lalovic ◽  
Valerija Cesljevic ◽  
Ljiljana Jovanovic ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Structural Characterization ◽  
Ammoniacal Solution ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Oxo Ligand

The first two complexes of dioxovanadium(V) with salicylaldehyde thiosemicarbazone (SALTSC), of the coordination formulas [VO2(SALTSC-H)]?H2O (1) and NH4[VO2(SALTSC-2H] (2), were synthesized and characterized by elemental analysis, conductometric measurements, IR and UV-vis spectroscopy and X-ray analysis. The complexes were obtained in the reaction of an aqueous ammoniacal solution of NH4VO3 and SALTSC. The results of the characterization showed that SALTSC was coordinated in the usual ONS tridentate mode as monoanion in complex 1 and dianion in complex 2. In both complexes, the vanadium atom is in a deformed square-pyramidal environment and is slightly shifted towards the apical oxo-ligand (? 0.52 ?).

scholarly journals Transition metal complexes with thiosemicarbazide-based ligands, Part 49: New complexes of iron(III) with deprotonated tridentate Schiff base - pyridoxal derivatives

2005 ◽  
Vol 70 (2) ◽  
pp. 187-200 ◽  
Author(s):  
Ljiljana Jovanovic ◽  
Violeta Jevtovic ◽  
Vukadin Leovac ◽  
Luka Bjelica
Keyword(s):  
Schiff Base ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Solution Equilibria ◽  
Electrochemical Processes ◽  
Tridentate Schiff Base

Three new bis(ligand) iron(III) complexes were prepared with the deprotonated ONX ligands (X = O,S,N), pyridoxal semi-, thiosemi- and S-methylisothiosemicarbazones (H2L1, H2L2 and H2L3, respectively) of the formulas [Fe(HL1,2)L1,2].4H2O and [Fe(HL3)2]OAc.2H2O. The compounds were characterized by elemental analysis, conductometric and magnetochemical measurements, as well as by IR and UV-vis spectra. Detailed voltammetric investigations were carried out in DMF solutions in the presence of several supporting electrolytes to study the nature of the electrochemical processes and solution equilibria.

scholarly journals Transition metal complexes with thiosemicarbazide-based ligands. Part 57: Synthesis, spectral and structural characterization of dioxovanadium(V) and dioxomolybdenum(VI) complexes with pyridoxal s-methylisothiosemicarbazone

2010 ◽  
Vol 75 (8) ◽  
pp. 1063-1074 ◽  
Author(s):  
Vukadin Leovac ◽  
Vladimir Divjakovic ◽  
Milan Joksovic ◽  
Ljiljana Jovanovic ◽  
Ljiljana Vojinovic-Jesic ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Structural Characterization ◽  
Vanadium Complex ◽  
Molybdenum Complex ◽  
Octahedral Structure ◽  
X Ray

This work is concerned with the synthesis of neutral dioxovanadium(V) and dioxomolybdenum(VI) complexes with tridentate ONN pyridoxal S-methylisothiosemicarbazone (PLITSC) of the respective formulas [VO2(PLITSC-H)]?2H2O and [MoO2(PLITSC-2H)]. Structural X-ray analysis of the vanadium complex showed that it has an almost ideal square-pyramidal structure, while the molybdenum complex is supposed to have a polymeric octahedral structure. In addition to elemental analysis, both complexes were characterized by conductometric and magnetometric measurements, as well as by IR, UV-vis, 1H- and 13CNMR spectra.

SYNTHESIS AND CHARACTERIZATION OF TRANSITION METAL COMPLEXES OF 2-THIOACETIC ACID BENZOTHIAZOLE LIGAND

2010 ◽  
Vol 13 (1) ◽  
pp. 36-42 ◽  
Author(s):  
Ahmed Majeed ◽  
◽  
Emad Yousif ◽  
Yang Farina ◽  
◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Synthesis And Characterization ◽  
Thioacetic Acid

DFT characterization of 1-acetylpiperazinyl-dithiocarbamate ligand and its transition metal complexes

2012 ◽  
Vol 53 (4) ◽  
pp. 665-675 ◽  
Author(s):  
S. A. Beyramabadi ◽  
A. Morsali ◽  
S. H. Vahidi
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Dithiocarbamate Ligand

Synthesis, Structure and Characterization of a Series of Transition Metal Complexes with Tripodal Polyimidazole Ligand

2005 ◽  
Vol 23 (2) ◽  
pp. 132-136 ◽  
Author(s):  
Ren Yan-Wei ◽  
Wu Ai-Zhi ◽  
Li Jun ◽  
Zhang Feng-Xing ◽  
Zhang Jin-Hua
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes

Metal–oxo cluster-supported transition metal complexes: hydrothermal synthesis and characterization of [{Cu(phen)2}2SiW12O40]

2007 ◽  
Vol 60 (4) ◽  
pp. 401-410 ◽  
Author(s):  
Fan-Xia Meng ◽  
Jun Sun ◽  
Kun Liu ◽  
Feng-Xia Ma ◽  
Ya-Guang Chen
Keyword(s):  
Hydrothermal Synthesis ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Synthesis And Characterization
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