Öz, Sevi ; Acar, Nurcan ; Svoboda, Ingrid ; Titiš, Ján ; Boča, Roman ; Atakol, Orhan (2014)
Synthesis, structure and magnetic properties of homotrinuclear Ni(II) complexes with asymmetric Schiff-base ligands.
In: Inorganica Chimica Acta, 421
doi: 10.1016/j.ica.2014.07.020
Article, Bibliographie
Abstract
By using 1,3-propanediamine, 2-hydroxyacetophenone and salicylaldehyde an asymmetric ONNO type Schiff base, N(hydroxyphenylidene)-N′(2-hydroxyacetophenylidene)-1,3-propanediamine (H2metsalpn), has been prepared and isolated. This Schiff base has been reduced yielding N(2-hydroxybenzyl)-N′[1-(2-hydroxyphenyl)ethyl]-1,3-diaminopropane (H2metsalpnH) These two ligands were used in preparing three trinuclear Ni(II) complexes with catena-[Ni3] structural motif, where DMF and carboxylato (formato, acetato, benzoato) ligands occur. These complexes were characterized by EA, IR, TG, DTA and MS data. The X-ray diffraction confirms that the Ni(II) central atoms are in a distorted octahedral coordination environment: the terminal centers possess {NiN2O4} octahedral coordination sphere whereas the very central atom possesses {NiO6} chromophore. The coordinated DMF groups are liberated between 140–240 °C. The SQUID magnetometry confirms presence of weak exchange coupling of the antiferromagnetic nature, J/hc = −2 to −7 cm−1, with a moderate single-ion anisotropy reflected by the zero-field splitting D/hc = +4 to +7 cm−1.
| Item Type: | Article |
|---|---|
| Erschienen: | 2014 |
| Creators: | Öz, Sevi ; Acar, Nurcan ; Svoboda, Ingrid ; Titiš, Ján ; Boča, Roman ; Atakol, Orhan |
| Type of entry: | Bibliographie |
| Title: | Synthesis, structure and magnetic properties of homotrinuclear Ni(II) complexes with asymmetric Schiff-base ligands |
| Language: | English |
| Date: | 1 September 2014 |
| Publisher: | Elsevier Science Publishing |
| Journal or Publication Title: | Inorganica Chimica Acta |
| Volume of the journal: | 421 |
| DOI: | 10.1016/j.ica.2014.07.020 |
| Abstract: | By using 1,3-propanediamine, 2-hydroxyacetophenone and salicylaldehyde an asymmetric ONNO type Schiff base, N(hydroxyphenylidene)-N′(2-hydroxyacetophenylidene)-1,3-propanediamine (H2metsalpn), has been prepared and isolated. This Schiff base has been reduced yielding N(2-hydroxybenzyl)-N′[1-(2-hydroxyphenyl)ethyl]-1,3-diaminopropane (H2metsalpnH) These two ligands were used in preparing three trinuclear Ni(II) complexes with catena-[Ni3] structural motif, where DMF and carboxylato (formato, acetato, benzoato) ligands occur. These complexes were characterized by EA, IR, TG, DTA and MS data. The X-ray diffraction confirms that the Ni(II) central atoms are in a distorted octahedral coordination environment: the terminal centers possess {NiN2O4} octahedral coordination sphere whereas the very central atom possesses {NiO6} chromophore. The coordinated DMF groups are liberated between 140–240 °C. The SQUID magnetometry confirms presence of weak exchange coupling of the antiferromagnetic nature, J/hc = −2 to −7 cm−1, with a moderate single-ion anisotropy reflected by the zero-field splitting D/hc = +4 to +7 cm−1. |
| Uncontrolled Keywords: | Ni(II) complexes, Trinuclear complexes, Asymmetric Schiff base, Crystal structure, Magnetism |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Structure Research 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 23 Jan 2015 09:23 |
| Last Modified: | 23 Jan 2015 09:23 |
| PPN: | |
| Funders: | Grant Agencies (Slovakia: VEGA 1/0522/14, VEGA 1/0233/12, APVV-0014-11) are acknowledged for the financial support. , In addition, financial support of this work by the University of Ankara Scientific Research Fund under contract no. 12B4240003 and Ahi Evran University Scientific Research Fund under contract no. 4001.12.014 are gratefully acknowledged. |
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