Estimation of coordination bond energies of NH3, H2O and Et2NH ligands in the Ni(II) and Cu(II) complexes

Ergün, Elif; Atakol, Orhan; Eriş, F. Z.; Yücel, A.; Düzgün, Ece

doi:10.1007/s10973-009-0176-3

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…This complex is not soluble in any common organic solvent and remained intact up to 300 °C. However, these complexes are dissolved by the conversion of mononuclear square-planar or octahedral complexes in the presence of pyridine, NH3, piperidine, Et2NH (Scheme 4) [49]. Using this ligand, NiSAP.piperidine complex was prepared and investigated in DI unit.…”

Section: Resultsmentioning

confidence: 99%

The Electron Ionization Mass Spectra of ONO, ONNO and O3N3 Type Schiff Base Complexes Containing First Row Transition Metal Ions

İnal

Atakol

Akay

2020

Süleyman Demirel Üniversitesi Fen Edebiyat Fakültesi Fen Dergisi

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Mono-, di-and trinuclear complexes of Fe(III), Co(II), Ni(II), and Cu(II) ions with Bis-N,N'(salicylidene)-1,3-diaminopropane (LH2), Bis-N,N'(salicylidene)-2,2'-dimethyl-1,3diaminopropane (LDMH2), N(salicylidene)-2-hydroxyaniline (SAP), and Tris-N,N',N''(salicylidene)-2,2',2''-aminoethylamine (Trensal) were prepared and ionized with 30-110 eV electrons in direct inlet (DI). Compounds with metal-oxygen covalent bonds were observed to give molecular peaks, whereas polynuclear complexes containing coordinative bonds did not have such peaks. It was concluded that the coordinative bonds were dissociated by electron impact (EI). The thermogravimetric analysis reveals that the molecular peak observed for the mononuclear complexes which are stable up to 300 °C is also the base peak. The peaks obtained for the di-and trinuclear complexes that decomposed at these temperatures could not be observed as a molecular signal. The resulting fragments were evaluated and compared with the literature data.

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Section: Resultsmentioning

confidence: 99%

The Electron Ionization Mass Spectra of ONO, ONNO and O3N3 Type Schiff Base Complexes Containing First Row Transition Metal Ions

İnal

Atakol

Akay

2020

Süleyman Demirel Üniversitesi Fen Edebiyat Fakültesi Fen Dergisi

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“…The removal of the organic ligand from the structure is most probably related to the strength of the coordination bonds. Although coordination bands are not as strong as the covalent bond they are stronger than dipol-dipol interactions [35]. This may be the prime reason for the removal of dmpp group from the metal ion at higher temperatures.…”

Section: Discussionmentioning

confidence: 96%

Synthesis, Thermal Kinetic Analysis and DFT Calculations of Pyrazine and Pyridine Complexes of Copper(II) Thiocyanate

Nazır

Atakol²,

İnal³

et al. 2018

SDÜ Fen Bil Enst Der

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Two NNN type ligands namely bis-2,6-(pyrazol-1-yl) pyridyne (pp) and bis-2,6-(3,5-dimethyl-pyrazol-1-yl) pyridyne (dmpp) were prepared by the use of 2,6-dichloropyridine, pyrazol and 3,5-dimethylpyrazol. Using these ligands with SCN co-ligand two mononuclear Cu(II) complexes were synthesized and characterized. The complexes were investigated by thermogravimetry (TG) and differential thermal analysis (DTA) and subjected to isothermal and nonisothermal kinetic analyses. TG and DTA results indicated that the complexes showed two distinctive degradation steps and the NNN type ligand was removed from the structure at temperatures above 300 °C. The activation energies of these complexes and same thermodynamic parameters of these thermal reactions have been calculated. The situation of d orbitals of Cu(II) ion, the electron densities of donor atoms of the ligands, natural bond orbital (NBO) analysis, the theoretical IR spectra and HOMO-LUMO energy levels computed by the use of DFT/B3LYP methods with 6-311G (d) basis set in Gaussian 09 software. These data were employed to enlighten the thermal degradation of the complexes prepared.

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“…N(salicylidene)-2-hydroxyaniline (SAPH2) is a tridentate ligand in the type of ONO and this ligand gives mononuclear complexes with I and II. series transition elements like LH2, [23][24][25][26][27]. However, in particular, the Ni(II) complex of this Schiff base is dinuclear coordinated and in crystal lattice supramolecular structure called pseudo-octahedral in solid state [24,26].…”

Section: Introductionmentioning

confidence: 99%

“…Between 180 -320 °C, this amine or NH3 is removed from the structure and transformed into a [NiSAP] complex again, according to the reactions given in Fig. 2 [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of NiO Nanoparticles by Using Thermal Decompositions of Ni(II) – ONO and ONNO Type Schiff Base Complexes

Öz

BOZKURT

Sopacı

et al. 2022

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Bir ONNO tipi Schiff bazı olan bis-N;N'(salisiliden)-1,3-propandiamin (LH2) ve ONO tipi Schiff bazı olan N(2-hidroksi)salisillaldimin (SAPH2) kullanılarak beş farklı Nikel (II) kompleksi NH3 veya amin varlığında hazırlandı ve bu komplekslerin havada termal bozunması ile NiO nanoparçacıkları elde edildi. Hazırlanan kompleksler ve Schiff bazları, element analizi, IR spektroskopisi, Termogravimetri (TG), 1HNMR ve 13CNMR spektroskopisi, Kütle Spektrometrisi (MS), Atomik absorpsiyon spektrometrisi (AAS), ve Taramalı Elektron Mikroskobu (SEM) ile karakterize edildi. Elde edilen nanoparçacık NiO malzemenin yüzey alanı Brunauer-Emmett-Teller (BET) yöntemi ile ölçüldü. NiO nanoparçacıklarının termal bozunma ürünleri XRD ve SEM teknikleri ile incelendi. SEM incelemeleri, hazırlanan iki kompleksin çözünürlüğünün çok az olması nedeniyle nanopartiküller halinde çöktüğünü gösterdi. Bu sebepten dolayı çözünmeyen komplekslerin termal bozunma sonucunda NiO nanoparçacıklarına dönüştüğü gözlemlendi.

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Estimation of coordination bond energies of NH3, H2O and Et2NH ligands in the Ni(II) and Cu(II) complexes

Cited by 6 publications

References 20 publications

The Electron Ionization Mass Spectra of ONO, ONNO and O3N3 Type Schiff Base Complexes Containing First Row Transition Metal Ions

The Electron Ionization Mass Spectra of ONO, ONNO and O3N3 Type Schiff Base Complexes Containing First Row Transition Metal Ions

Synthesis, Thermal Kinetic Analysis and DFT Calculations of Pyrazine and Pyridine Complexes of Copper(II) Thiocyanate

Synthesis and Characterization of NiO Nanoparticles by Using Thermal Decompositions of Ni(II) – ONO and ONNO Type Schiff Base Complexes

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