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1,1?-(Piperazine-1,4-diyl)dipropan-2-ol
(Wiley-Blackwell, 2011) Turkyilmaz, Murat; Baran, Yakup; Ozdemir, Namik
The asymmetric unit of the crystal contains one-fourth of the title compound, C10H22N2O2, with the centre of the piperazine ring located at a site of 2/m symmetry. The piperazine ring adopts a chair conformation. The methine and methylene C atoms of the 2-hydroxypropyl groups show symmetry-imposed disorder over two equally occupied and mutually exclusive sets of positions. Only intramolecular O-H center dot center dot center dot N contacts are observed.
2-[2-(1H-Imidazol-3-ium-5-yl)ethyl]-3-(pyridin-2-yl)-2H-imidazo[1,5-a]pyridin-4-ium bis(perchlorate)
(Wiley-Blackwell, 2011) Turkyilmaz, Murat; Baran, Yakup; Ozdemir, Namik
In the title molecular salt, C17H17N5+center dot 2ClO(4), the dihedral angles between the fused-ring system and the pendant five- and six-membered heterocyclic rings are 6.4 (2) and 41.29 (19)degrees, respectively. The O atoms of both perchlorate anions are disordered over two sets of sites with occupancy ratios of 0.614 (8):0.386 (8) and 0.591 (7):0.409 (7). An intramolecular C-H center dot center dot center dot N contact occurs in the cation. In the crystal, the components are linked by N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds and pi-pi stacking interactions [centroid-centroid separation = 3.642 (3) angstrom].
Binuclear and mononuclear Cu(II) and Ni(II) complexes of tetra- and hexadentate ligands
(Springer, 2017) Turkyilmaz, Murat
Two tetradentate ligands, 1,2-bis(2-hydroxyethylthio)ethane S2O2 (L (1) ) and N,N'-bis(2-hydoxypropyl)piperazine N2O2 (L (2) ), were prepared by organization of some mononuclear complexes of Cu(II) and Ni(II). A new binuclear Schiff base ligand with a 1,4-dipropoxybutane spacer provided by the reaction of salicylaldehyde and 1,4-bis(3-aminopropoxy)butane served as an octadentate, N2O4 (L (3) ) ligand, in designing some binuclear complexes with metal ions. All the ligands were characterized by elemental analyses, FTIR, H-1 and C-13 NMR and GC-MS. The complexes were characterized by elemental analyses, FTIR, thermal methods, electronic spectra, conductivity and magnetic measurements. The metal ions coordinate to the ligands with four donor atoms in square planar geometry. The thermal stabilities of the complexes were discussed in terms of metal ions and type of donor atoms. The complexes were characterized by electronic spectra and magnetic susceptibility measurements to establish the proposed four-coordinated square planar geometry. The TG chart indicates high thermal stability for complexes. The decomposition processes consisted of three stages: The first two stages involve the loss of water and chloride anions and the last stage indicates degradation of the organic ligands. The antifungal activity of the ligands and their complexes was tested against several fungal species: Aspergillus nigar, Aspergillus flavus and Candida albicans. The results show that complexes have significant antifungal activities compared to their parent ligands.
Complexation, thermal and catalytic studies of N-substituted piperazine, morpholine and thiomorpholine with some metal ions
(Pergamon-Elsevier Science Ltd, 2014) Kacan, Mesut; Turkyilmaz, Murat; Karabulut, Ferhat; Altun, Ozlen; Baran, Yakup
Several Cu(II), Pt(II) and Ni(II) complexes of N-substituted, piperazine (NN donor), morpholine (NO donor) and thiomorpholine (NS donor) derivatives were synthesized and their thermal behavior and catalytic activity in epoxidation reaction of cis-diphenylethylene were studied using oxygen sources NaOCl. The coordination compounds of Cu(II), Pt(II) and Ni(II) having general formula [MLCl]Cl, [ML(2)l]Cl-2 or [ML]Cl-2 with tetra coordinated geometry around metal ions have been isolated as solid. All the ligands and complexes were identified by spectroscopic methods and elemental analysis, magnetic measurements, electrical conductance and thermal analysis. A square planer structures have been proposed for all complexes. The thermal stability of the complexes discussed in terms of ligands donor atoms, geometry and central metal ions. The complexes have a similar thermal behavior for the selected metal ions. The thermogravimetric analyses suggest high thermal stability for most complexes followed by thermal decomposition in different steps. The decomposition processes were observed as water elimination, chloride anion removal and degradation of the organic ligands. Catalytic ability of the complexes were examined and found that all the complexes can effectively catalyze the epoxidation of cis-stilbene with NaOCl. (C) 2013 Elsevier B.V. All rights reserved.
Multistep Synthesis of Phosphazene Derivative of Chenodeoxycholicacid (CDCA)
(Taylor & Francis Ltd, 2014) Turkyilmaz, Murat; Genc, Fatma
A new and more effective compound was synthesized by combining bile acid (chenodeoxycholic acid) and phosphazene. The synthesis started with chenodeoxycholic acid (CDCA). In the first step CDCA was converted to the CDCA methyl ester (methyl-4-(hexadecahydro-3,7-dihydroxy-10,13-dimethyl-1H-cyclopenta[a]phenanthren-17-yl) pentanoate). The mesylate was prepared from the methyl ester of CDCA and converted to the azide ester of CDCA by an S(N)2 reaction. The azide group at C-3 of chenodeoxycholic acid methyl ester was converted to an amino group (3-methyl-4-(3-amino-hexadecahydro-7-hydroxy-10,13-dimethyl-1H-cyclopenta[a]phenanthren-17-yl)pentanoate). Then, this compound was allowed to react with hexachlorocyclotriphosphazene in toluene under an argon atmosphere. The structures of the synthesized chenodeoxycholic acid derivatives and of the new phosphazene compound were confirmed by FTIR, H-1, C-13, P-31, C-13-DEPT NMR, MALDI-TOF mass spectra and elemental analysis.
Reliability of electrode materials for supercapacitors and batteries in energy storage applications: a review
(Springer Heidelberg, 2022) Ates, Murat; Chebil, Achref; Yoruk, Ozan; Dridi, Cherif; Turkyilmaz, Murat
Supercapacitors and batteries are among the most promising electrochemical energy storage technologies available today. Indeed, high demands in energy storage devices require cost-effective fabrication and robust electroactive materials. In this review, we summarized recent progress and challenges made in the development of mostly nanostructured materials as well as fabrication routes for energy storage devices. Indeed, we systematically sorted out the design principles of electrode materials such as lithium-ion, lead-acid, lithium-sulfur, nickel-cadmium, nickel-metal hydride, and sodium-ion for rechargeable batteries electrode and supercapacitors (SCs) electrode materials following by systematic discussions on electric double-layer capacitors, pseudocapacitors, and hybrid SCs behavior.
Some Ternary Phenylmethoxybis(tetrazolium) Complexes of Vanadium(IV,V) and Their Constants of Association
(Croatian Chemical Soc, 2012) Gavazov, Kiril Blazhev; Racheva, Petya Vasileva; Lekova, Vanya Dimitrova; Dimitrov, Atanas Nikolov; Turkyilmaz, Murat; Genc, Fatma
Several liquid-liquid extraction systems containing vanadium {vanadium(IV) or vanadium(V)}, azoderivative of resorcinol {ADR: 4-(2-pyridylazo)-resorcinol (PAR) or 4-(2-thiazolylazo)-resorcinol (TAR)} and (phenylmethoxibis)tetrazolium salts {MBT: 3,3'-(3,3'-dimetoxy-4,4'-biphenylene)-bis(2,5-diphenyl-2H-tetrazolium) chloride (Blue Tetrazolium, BT) or 3,3'-(3,3'-dimetoxy-4,4'-biphenylene)-bis[2,5-di(4-nitrophenyl)-2H-tetrazolium] chloride (Tetranitroblue Tetrazolium, TNBT)} were studied. The optimum operating conditions and compositions of the extracted species were found. The constants of association (beta) between MBT2+ and the anionic V-ADR chelates (Chel(n-)) were calculated. Previously reported negative linear relationship between log beta and the number of nitro groups included in tetrazolium cation (N-nitro) was discussed taking into account the obtained results and literature data for V ADR MBT complexes of the same class, in which MBT is BT or 3,3'-(3,3'-dimetoxy-4,4'-biphenylene)bis[2-(4-nitrophenyl)-5-phenyl-2H-tetrazolium] chloride (Nitroblue Tetrazolium, NBT). (doi: 10.5562/cca1885)
Spectroscopic and structural properties of N-(acetamide) morpholinium bromide
(Pergamon-Elsevier Science Ltd, 2011) Baran, Yakup; Ozay, Hava; Esener, Hasan; Turkyilmaz, Murat
A new crystal of N-(acetamide) morpholinium (NAM) bromide has been prepared in methanol at room temperature and characterized by single crystal X-ray analysis, elemental analysis, GS-MS, FUR, NMR((1)H, (13)C, DEPTH and HETCOR). The N-(acetamide) morpholinium crystallizes in the orthorhombic crystal system, Pnma with unit cell a = 12.798(9) angstrom, b = 7.222(5) angstrom, c = 9.244(5) angstrom, beta = 90.00, V = 854.4(9) angstrom(3), Z = 4. The X-ray structure determination revealed that there are strong inner and intermolecular hydrogen bonds in the crystal. (C) 2011 Elsevier B.V. All rights reserved.
Structure, Spectroscopic, Magnetic, Fluorescence, and Thermal Studies of Bis(perchlorate)tetrakis(pyrazole)copper(II)
(Taylor & Francis Inc, 2011) Baran, Yakup; Esener, Hasan; Turkyilmaz, Murat
The complex bis(perchlorate) tetrakis(pyrazole) copper(II) has been prepared and characterized by single crystal X-ray analysis, FT-IR, UV-VIS spectroscopy and thermal methods. [Cu(ClO4)(2)(pyzl)(4)] crystallizes in the monoclinic system, space group C2/c, with a = 14.5186(11), b = 9.9513(7), c = 15.8564(11) angstrom, beta = 115.5290(10)degrees V = 2067.2(3)angstrom(3) and z = 4. The molecular and crystal structure are stabilized by inter and intramolecular hydrogen bonds. The complex formation kinetics was studied at 310 nm. The activation parameters of the complex formation kinetics were determined as, Delta H-#: 200 kJ/mol, Delta S-#: 268 J/K. mol. The FT-IR spectra has been measured and assigned in the range of 4000-400 cm(-1). The Cl-O and N-H stretching vibrations confirms the presence of intramolecular hydrogen bonds. The magnetic moment of the complex was found to be 1.73 BM. The fluorescence quenching of pyrazole by Copper(II) was also studied in methanol.
Structure, spectroscopic, thermal properties and catalytic activity of iron(III)-Schiff base complexes
(Elsevier Science Sa, 2013) Turkyilmaz, Murat; Kacan, Mesut; Baran, Yakup
Iron(III) complexes of the Schiff bases: [FeLCl3] (L = 3-(1H-imidazole-1-yl)-N-[(1E)-1H-pyrrol-2-ylmethylene]propan-1-amine, L-1; 3-(1H-imidazole-1-yl)-N-[(1E)-(3-methyl-2-thienyl)methylene]propan-1-amine, L-2; 1-(3-{[(1E)-1H-pyrrol-ylmethylene]amino} propyl)pyrrolidin-2-one, L-3; 1-(3-{[(1E)-2-furylmethylene] amino} propyl) pyrrolidin-2-one, L-4 have been prepared and characterized by NMR, Mass, FTIR, UV-Vis spectroscopy, elemental analysis, conductance in non-aqueous solvent, and magnetic measurements. The analytical data showed that the Schiff bases act as tridentate ligands towards trivalent iron via azomethine, imidazole, pyrrole, pyrrolidin nitrogen, furan oxygen and thiophene sulfur. Thermal characterizations of the complexes have been studied in nitrogen atmosphere by simultaneous thermogravimetry and differential thermal analysis, TG-DTA. Two-step decompositions were observed until 800 degrees C by TG-DTA, involving first release of water until 200 degrees C. Finally, the organic portion of the complex was burnt out slowly accompanied by a sharp endothermic heat effect; meanwhile iron oxide is formed rapidly. The results suggested that the azomethines are tridentating chelates by N-3, N2S and N2O donor atoms. A high spin octahedral geometry is assigned to the Iron(III) ion in all four complexes. It has been found that iron(III)- Schiff base complexes activate the epoxidation of cis-1,2-diphenylethylene by NaOCl. The epoxide conversion cis-1, 2-diphenylethylene and the ratio of the cis:trans epoxides vary depending on the structure of the Schiff bases. (c) 2012 Elsevier B.V. All rights reserved.
Syntheses, Spectroscopic, and Thermal Characterization of Cu(II), Ni(II), and Pt(II) Complexes of Some Tridentate Ligands
(Taylor & Francis Inc, 2013) Turkyilmaz, Murat; Karabulut, Ferhat; Altun, Ozlen; Baran, Yakup
The study emphasized azomethine coordination compounds of Pt(II), Cu(II), and Ni(II) having tetracoordinate geometry around the metal ions with the general formula, [MLCl]Cl, where L, azomethine have been isolated in the solid state. All the ligands were identified by spectroscopic methods and elemental analysis. The synthesized coordination compounds have been characterized by FTIR, magnetic measurements, elemental analysis, electrical conductance, and thermal analysis. Square planar structures have been proposed for the Ni(II) and Pt(II) complexes. Magnetic susceptibility measurements and electronic spectra of the complexes sustain the proposed square planer structures. The complexes thermally stable and this thermal stability is discussed in terms of ligands donor atoms, geometry and central metal ions. Azomethine complexes have a similar thermal behavior for the selected metal ions. The TG analyses suggest high thermal stability for most complexes followed by thermal decomposition in different steps. The decomposition processes were observed as water elimination, chloride anion removal, and degradation of the organic ligands. Supplemental materials are available for this article. Go to the publisher's online edition of Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry to view the supplemental file.
Synthesis and characterization of new N-heterocyclic carbene ligands: 1,3-Bis(acetamide)imidazol-3-ium bromide and 3-(acetamide)-1-(3-aminopropy1)-1H-imidazol-3-ium bromide
(Elsevier, 2017) Turkyilmaz, Murat; Ulucam, Guhergul; Aktas, Saban; Okan, S. Erol
Two new pincer type N-heterocyclic carbene ligands were synthesized. The compounds were characterized by FTIR, NMR (H-1, C-13) GC-MS and elemental analyses. They were also both modelled by DFT calculations as the crystal structure of 1,3-bis(acetamide)imidazol-3-ium bromide was determined by XRD which is an orthorhombic system with space group P2(1)2(1)2. The structural analyses in gas phase were realized by comparing the experimental NMR and IR spectra with those of the theoretical calculations. In vitro biological activities of the molecules were determined and found that one of them exhibits significant cytotoxic activity. (C) 2017 Elsevier B.V. All rights reserved.
Synthesis and Properties of Some Basic Metals and Manganese Salts of cis-1,2-Cyclohexane dicarboxylic Add
(Asian Journal Of Chemistry, 2010) Altun, Ozlen; Turkyilmaz, Murat; Husyinova, Gulara; Cerkezkayabekir, Ayseguel; Feyizoglu, Adilhan
In this work, sodium, potassium, ammonium and manganese salts of cis-1,2-cyclohexane dicarboxylic acid were synthesized. The structural characteristics of these salts were analyzed by thermo graphic and spectro-scopic methods and examined on liver and wheat under the effect of their biological activities. According to these results, they can be used as a micro-fertilizer in the fields Biology and Agriculture.
Synthesis methods, characterizations and usage areas of medicinal compounds from THP, and their Ag(I)-NHC complexes, and their antimicrobial efficiencies
(Ios Press, 2023) Turkyilmaz, Murat; Donmez, Murat
Natural or synthetic substances can be used to create smart medications, which can enhance cognitive performance in healthy individuals. They are frequently used to boost memory, concentration, creativity, intelligence, and motivation in the fiercely competitive world of today.To achieve optimum results, the drug should be applied to the target site at the appropriate concentration, with as few or no adverse effects as possible due to off-target actions. Recent studies have shown that such drugs, which are often used in chemotherapy, can reduce the level of discomfort cancer patients endure. In this study, metal complexes that can carry silver nanoparticles with electrical and optical properties were formed. This article examines the potential of man-made silver N-heterocyclic complexes as smart drugs. Following the synthesis of new carbene species from the Xthantine compound, metal complexes were produced for this use. The chemical structures of these carbenes and metal complexes were investigated using a variety of methods, including melting point studies, conductivity, H-1-NMR and C-13-NMR, LC-Mass, FT-IR, TGA, and UV-vis spectrophotometry. These metal complexes differ mostly due to their solubility in water. Using the disk diffusion method, the antimicrobial and antibacterial properties of silver(I)-NHC complexes were examined against Gram-positive and Gram-negative bacteria as well as fungi. It has been observed that the antimicrobial activity of 7,9-bis(2-cyanoethyl)-1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purine-9-ium silver(I)bromide compound is high. These data suggest that this compound has strong antibacterial properties.
Synthesis of new bio-based hydrogels derived from bile acids by free-radical photo-polymerization
(Wiley, 2021) Karabulut, Huseyin Riza Ferhat; Mert, Berk; Altinkok, Cagatay; Karatavuk, Ali Osman; Acik, Gokhan; Turkyilmaz, Murat
In this article, the study on the swelling and thermal behaviors of a new series of bile acid-based polymeric hydrogels is reported. For this purpose, in the first step, the reduction of carboxyl acid groups of some common bile acids including cholic acid (CA), chenodeoxy cholic acid (CDCA), and lithocholic acid (LCA) to the corresponding alcohols by lithium aluminum hydride (LiAlH4) in THF solution is performed. Then, hydroxyl functionalities of the obtained products are reacted with the acryloyl chloride in the presence of triethylamine (TEA). Finally, the cross-linking reactions between acryloyl functionalized bile acids and methoxy poly(ethylene glycol) monomethacrylate (MPEGMA) are conducted by free-radical photo-polymerization technique at lambda = 350 nm in the presence of 2,2-Dimethoxy-2-phenylacetophenone (DMPA) as an initiator to achieve the desired bile acid-based polymeric hydrogels. The resulting hydrogels and their intermediates are characterized by Fourier transform infrared (FT-IR) and Proton nuclear magnetic resonance (H-1-NMR) spectroscopies. The swelling and thermal behavior of the obtained hydrogels indicates that the hydrogel starting from cholic acid is more swellable and has enhanced thermostability compared to others. Thus, the results of this study offer beneficial insights to researchers working in particularly bio-medical industry.
Synthesis, Spectral Analysis and Antimicrobial Activity of New Pd(II) Complexes Involving 5,6-Dimethylbenzimidazole
(Higher Education Press, 2023) Turkyilmaz, Murat; Donmez, Murat; Altun, Ozlen
In this study, firstly, 3-bromopropanenitrile(2a), ethyl bromoacetate(2b), and 2-bromoethan-1-amine(2c) were added to 5,6-dimethylbenzimidazole(1) and symmetrically-connected N-heterocyclic carbenes(NHC)[(3a-3c)] were synthesized. Then, the NHC precursor compounds were reacted with PdCl2 and Pd(II)-NHC complexes[(4a-4c)] were obtained. The synthesized NHC precursors(3a-3c) and Pd(II)-NHC complexes(4a-4c) were characterized by different spectroscopic methods. The antibacterial activities of these products were measured against bacteria and fungus with the disc diffusion method. Pd(II)-NHC complexes had higher antibacterial activity than the NHC precursors. The synthesized compounds showed antimicrobial activity with different properties from each other. In vitro biological activities of salts and metal complexes on selected bacteria were determined by the broth dilution method based on Clinical and Laboratory Standards Institute guidelines. 1,3-Bis-(2-hydroxyethyl) imidazolinium bromide and 3-(2-ethoxy-2-oxoethyl)-1-(3-aminopropyl)-1H-imidazole-3-ium bromide had activity against Escherichia coli.
Synthesis, spectroscopic and thermal properties of Pt(II) complexes of some polydentate ligands
(Springer, 2012) Baran, Yakup; Kaya, Ismet; Turkyilmaz, Murat
The new tetradentate symmetrical (2R, 2'S)1,1'-piperazine-1,4-diyldipropane-2-thiol) (L-1), (2S)-1-[bis (2-aminoethyl) amino] propan-2-ol) (L-2), and 2-{(E)-[((1R, 2S)-2-{[(1Z)-(2-hydroxy phenyl)methylene]amino}cyclohexyl) imino] methyl} phenol (L-3) ligands were synthesized and characterized on the basis of FT-IR, H-1, C-13 NMR, EI mass, and elemental analysis. Three commercially available ligands, (2,2'-[ethane-1,2-diylbis(thio)] diethanol (L-4), 2,2'-dithiodiethanenamine (L-5), and (2,2-[ethane-1,2-diyldi(imino)] diethanol (L-6), were also studied. Pt(II) complexes were characterized by FTIR, elemental analysis and thermal methods. Thermal behaviors of these complexes were investigated in the range 10-1000 degrees C. Magnetic properties were also studied, and the all complexes were found to be diamagnetic. The structures consist of the monomeric units in which the Pt(II) atoms exhibit square planar geometry. N,N'-bis(salicylidene)-1,2-cyclohexane has been synthesized and characterized by X-ray single crystal diffraction measurement. The ligand crystallizes in monoclinic crystal system and space group, Cc.
Synthesis, spectroscopic characterization and density functional studies of a bis-benzimidazole derivative and of its complexes with palladium(II) halides
(Elsevier France-Editions Scientifiques Medicales Elsevier, 2014) Aghatabay, Naz Mohammed; Altun, Ahmet; Gurbuz, Mustafa Ulvi; Turkyilmaz, Murat
The 2,6-bis(benzimidazol-2'-ylthiomethyl)pyridine (L) ligand and its palladium(II) complexes [Pd(L)X]X (X=Cl, Br, and I) have been synthesized and characterized by spectroscopic data acquisition. The ligand (L) was prepared by conventional heating as well as by microwave irradiation. Microwave irradiation shows additional features, including an easy workup, a much faster reaction and higher yields. The molar conductivity data reveal that the complexes form a 1:1 electrolyte in DMSO. The geometries, ground-state energetics and vibrational spectra of (L) and of its complexes have been elucidated, in terms of quantum chemical calculations. In the mononuclear complexes, the palladium atom is coordinated to three nitrogen atoms and one terminal halogen atom in a slightly distorted square planar arrangement. The present elemental analyses, FT-IR (mid, far), H-1 and C-13 NMR spectra are in good accordance with the square planar geometry around the Pd ion. The thermal behaviors of the complexes have been assessed by thermal gravimetric and differential thermal analyses. (C) 2013 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
Synthesis, spectroscopic characterization, X-ray structure and DFT studies on 4-(2-hydroxyphenyl)-4,5,6,7-tetrahydro-1H-imidazo[4,5-c]pyridin-5-ium chloride hydrate
(Pergamon-Elsevier Science Ltd, 2011) Turkyilmaz, Murat; Ozdemir, Namik; Baran, Yakup
The title molecular salt, 4-(2-hydroxyphenyl)-4,5,6,7-tetrahydro-1H-imidazo[4,5-c]pyridin-5-ium chloride hydrate (C12H14N3O+.Cl-.H2O), was synthesized and characterized by IR-NMR spectroscopy and single-crystal X-ray diffraction. In addition to the molecular geometry from X-ray experiment, the molecular geometry, vibrational frequencies and gauge-independent atomic orbital (GIAO) H-1 and C-13 NMR chemical shift values of the title compound in the ground state have been calculated using the density functional theory (DFT/B3LYP) method with the 6-31++G(d,p) and 6-311++G(d,p) basis sets, and compared with the experimental data. Besides, molecular electrostatic potential (MEP) distribution and non-linear optical properties of the title compound were investigated by theoretical calculations at the B3LYP/6-31 1++G(d,p) level. (C) 2011 Elsevier B.V. All rights reserved.
Synthesis, spectroscopic, and thermal properties of some azomethine complexes of Cu(II), Ni(II), and Pt(II)
(Springer, 2012) Turkyilmaz, Murat; Onder, Alper; Baran, Yakup
Four polydentate azomehines and their mono- and binuclear Pt(II), Cu(II), and Ni(II) complexes were synthesized and characterized. The resulting complexes were characterized by FTIR, magnetic measurements, elemental analysis, conductivity measurements, and thermal analysis. Electronic spectra and magnetic susceptibility measurements sustain the proposed distorted square-planar structures for the copper complexes. The electronic spectra display the characteristic pattern of square-planar stereochemistry for the other complexes. The thermal analyses have evidenced the thermal intervals of stability and also the thermodynamic effects that accompany them. Azomethine complexes have a similar thermal behavior for the selected metal ions. The decomposition processes as water elimination, chloride anion removal as well as degradation of the organic ligands were observed.

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