Matelková, Kristína ; Moncol, Ján ; Herchel, Radovan ; Dlháň, Ľubor ; Ivaniková, Radoslava ; Svoboda, Ingrid ; Padělková, Zděnka ; Mašlejová, Anna (2013)
Nickel(II) complexes with bridged polyamines.
In: Polyhedron, 56
doi: 10.1016/j.poly.2013.03.028
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Three nickel(II) complexes [Ni2(μ-trien)(trien)2](ClO4)4 (1), {[Ni2(μ-tren)2(tren)](ClO4)4·3,25H2O}n (2) and [Ni3(μ-tren)2(tren)2(H2O)2]Cl6·2H2O (3) (trien = N,N′-bis(2-aminoethyl)ethane-1,2-diamine, tren = N,N′-bis(2-aminoethyl)-1,2-ethanediamine) were synthesized and structurally characterized. Complex 1 consists of dimeric [Ni2(μ-trien)(trien)2]4+ cation and perchlorate anions, compound 2 contains polymer chain of cation {[Ni2(μ-tren)2(tren)]4+}n, perchlorate anions and uncoordinated water molecules, and structure of 3 consists of [Ni3((μ-tren)2(tren)2(H2O)2]6+ cation, chloride anions and uncoordinated water molecules. All compounds exhibit octahedrally coordinated nickel atoms. Two nickel(II) atoms of [Ni2(μ-trien)(trien)2]4+ cation in 1 are bridged through one trien ligand, which is bidentate to both nickel(II) atoms. The central Ni(II) atom in complex 3 is associated with peripheral atoms with one arm of tren ligand bonded in tridentate fashion, similarly as two nickel(II) atoms in polymer of complex 2. The magnetic behaviour of 1 and 2 complexes have been investigated in terms of magnetic susceptibility and magnetization. The magnetic analyses confirmed weak antiferromagnetic exchange between paramagnetic Ni(II) centres. The experimental observations were further confirmed and studied by DFT method at B3LYP/def2-TZVP level of theory for all compounds.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Matelková, Kristína ; Moncol, Ján ; Herchel, Radovan ; Dlháň, Ľubor ; Ivaniková, Radoslava ; Svoboda, Ingrid ; Padělková, Zděnka ; Mašlejová, Anna |
| Art des Eintrags: | Bibliographie |
| Titel: | Nickel(II) complexes with bridged polyamines |
| Sprache: | Englisch |
| Publikationsjahr: | 12 Juni 2013 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Polyhedron |
| Jahrgang/Volume einer Zeitschrift: | 56 |
| DOI: | 10.1016/j.poly.2013.03.028 |
| Kurzbeschreibung (Abstract): | Three nickel(II) complexes [Ni2(μ-trien)(trien)2](ClO4)4 (1), {[Ni2(μ-tren)2(tren)](ClO4)4·3,25H2O}n (2) and [Ni3(μ-tren)2(tren)2(H2O)2]Cl6·2H2O (3) (trien = N,N′-bis(2-aminoethyl)ethane-1,2-diamine, tren = N,N′-bis(2-aminoethyl)-1,2-ethanediamine) were synthesized and structurally characterized. Complex 1 consists of dimeric [Ni2(μ-trien)(trien)2]4+ cation and perchlorate anions, compound 2 contains polymer chain of cation {[Ni2(μ-tren)2(tren)]4+}n, perchlorate anions and uncoordinated water molecules, and structure of 3 consists of [Ni3((μ-tren)2(tren)2(H2O)2]6+ cation, chloride anions and uncoordinated water molecules. All compounds exhibit octahedrally coordinated nickel atoms. Two nickel(II) atoms of [Ni2(μ-trien)(trien)2]4+ cation in 1 are bridged through one trien ligand, which is bidentate to both nickel(II) atoms. The central Ni(II) atom in complex 3 is associated with peripheral atoms with one arm of tren ligand bonded in tridentate fashion, similarly as two nickel(II) atoms in polymer of complex 2. The magnetic behaviour of 1 and 2 complexes have been investigated in terms of magnetic susceptibility and magnetization. The magnetic analyses confirmed weak antiferromagnetic exchange between paramagnetic Ni(II) centres. The experimental observations were further confirmed and studied by DFT method at B3LYP/def2-TZVP level of theory for all compounds. |
| Freie Schlagworte: | Ni(II) complexes, Crystal structures, Magnetism, Bridging tetradentate amines |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 23 Jan 2015 09:15 |
| Letzte Änderung: | 23 Jan 2015 09:15 |
| PPN: | |
| Sponsoren: | This work has been supported by Slovak Grant Agency (VEGA, 1/0052/11) and Slovak Research and Development Agency (APVV-0014-11). , R. Herchel thanks to grant from the Ministry of Education of the Czech Republic (MSM6198959218)., K. Matelkova thanks also STU for young scientists grant – ŠMAMEK. |
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