Sönmez, M. ; Nazir, H. ; Emir, E. ; Svoboda, I. ; Aksu, L. ; Atakol, O. (2018)
Two dinuclear NiII–CdII complexes of reduced ONNO-type Schiff bases.
In: Journal of Thermal Analysis and Calorimetry, 131 (3)
doi: 10.1007/s10973-017-6720-7
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Two ONNO-type Schiff bases, bis-N,N'-(salicylidene)-1,3-diaminopropane and bis-N,N'-(2-hydroxyacetophenylidene)-1,3-propanediamine, were reduced using NaBH4 and converted to two phenol-amine-type tetradentate ligands, bis-N,N'-(2-hydroxybenzyl)-1,3-diaminopropane ((LH2)-H-H) and bis-N,N'-[1(2-hydroxyphenyl)ethyl]-1,3-diaminopropane (LAC(H)H(2)). These ligands were used to prepare two Ni-II-Cd-II heterodinuclear complexes, namely [DMF center dot NiLH center dot CdI2 center dot DMF] and [DMF center dot NiLAC(H)center dot CdBr2 center dot DMF] in DMF medium. The molecular structure and unit cells of these complexes have been elucidated by the use of X-ray diffraction data. The thermogravimetric analysis of the compounds revealed that as the temperature is increased, the first coordinative DMF molecule was removed from the structure followed by a second coordinative DMF molecule with the complete decomposition of the complex. The activation energies and Arrhenius pre-exponential factor of these thermal reactions were determined by the use of isothermal Coats-Redfern, nonisothermal Ozawa-Flynn-Wall and Kissinger-Akahira-Sunose methods. The results obtained for the first thermal reaction were similar since the structure of both complexes remained intact during this process. Also, the theoretical calculations of the bond lengths, bond angles and natural bond orbital analysis of both complexes were carried out using the algorithms embedded in Gaussian 09 software.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Sönmez, M. ; Nazir, H. ; Emir, E. ; Svoboda, I. ; Aksu, L. ; Atakol, O. |
| Art des Eintrags: | Bibliographie |
| Titel: | Two dinuclear NiII–CdII complexes of reduced ONNO-type Schiff bases |
| Sprache: | Englisch |
| Publikationsjahr: | März 2018 |
| Verlag: | Springer |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Thermal Analysis and Calorimetry |
| Jahrgang/Volume einer Zeitschrift: | 131 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1007/s10973-017-6720-7 |
| URL / URN: | https://doi.org/10.1007/s10973-017-6720-7 |
| Kurzbeschreibung (Abstract): | Two ONNO-type Schiff bases, bis-N,N'-(salicylidene)-1,3-diaminopropane and bis-N,N'-(2-hydroxyacetophenylidene)-1,3-propanediamine, were reduced using NaBH4 and converted to two phenol-amine-type tetradentate ligands, bis-N,N'-(2-hydroxybenzyl)-1,3-diaminopropane ((LH2)-H-H) and bis-N,N'-[1(2-hydroxyphenyl)ethyl]-1,3-diaminopropane (LAC(H)H(2)). These ligands were used to prepare two Ni-II-Cd-II heterodinuclear complexes, namely [DMF center dot NiLH center dot CdI2 center dot DMF] and [DMF center dot NiLAC(H)center dot CdBr2 center dot DMF] in DMF medium. The molecular structure and unit cells of these complexes have been elucidated by the use of X-ray diffraction data. The thermogravimetric analysis of the compounds revealed that as the temperature is increased, the first coordinative DMF molecule was removed from the structure followed by a second coordinative DMF molecule with the complete decomposition of the complex. The activation energies and Arrhenius pre-exponential factor of these thermal reactions were determined by the use of isothermal Coats-Redfern, nonisothermal Ozawa-Flynn-Wall and Kissinger-Akahira-Sunose methods. The results obtained for the first thermal reaction were similar since the structure of both complexes remained intact during this process. Also, the theoretical calculations of the bond lengths, bond angles and natural bond orbital analysis of both complexes were carried out using the algorithms embedded in Gaussian 09 software. |
| Freie Schlagworte: | Heteronuclear complexes, Crystal structure, Thermal kinetic analysis, DFT |
| Zusätzliche Informationen: | This study was financially supported by the Ankara University Scientific Research Fund under Project numbers 12B4240001 and 13L4240012. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung |
| Hinterlegungsdatum: | 14 Sep 2020 07:20 |
| Letzte Änderung: | 14 Sep 2020 07:20 |
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