Magnetostructural correlations in μ-pyrazolato-μ-acetato dinickel(II) complexes: Subtle effects of acetate tilting
| Autor: | Franc Meyer, Serhiy Demeshko, Guido Leibeling, Feng-Mei Nie, Sebastian Dechert |
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| Rok vydání: | 2009 |
| Předmět: |
Denticity
010405 organic chemistry Stereochemistry Chemistry Solid-state chemistry.chemical_element 010402 general chemistry 01 natural sciences Antiferromagnetic coupling 0104 chemical sciences 3. Good health Inorganic Chemistry Solvent Crystallography chemistry.chemical_compound Nickel Materials Chemistry Chelation Carboxylate Physical and Theoretical Chemistry Bimetallic strip |
| Zdroj: | Inorganica Chimica Acta. 362:763-770 |
| ISSN: | 0020-1693 |
| DOI: | 10.1016/j.ica.2008.03.101 |
| Popis: | A series of dinickel acetato complexes [LNi 2 (OAc)(solvent) x ](ClO 4 ) 2 ( 1 – 3 , 5 ) as well as related complexes [LNi 2 (OAc) 2 ](OAc) ( 4 ) and [LNi 2 (OAc)(NO 3 ) 2 ] ( 6 ), all derived from three pyrazolate-based binucleating ligands, have been prepared and characterized by X-ray crystallography. The solid state structures reveal different acetate binding modes (μ 1,3 -bridging and bidentate chelating) plus severe twisting and tilting of the μ 1,3 -acetate bridges with respect to their bimetallic scaffolds, reflecting the great flexibility of carboxylate coordination. Magnetic properties of all six complexes have been investigated, and the strength of antiferromagnetic coupling is discussed in the light of the structural differences, suggesting a magnetostructural correlation for acetato-bridged complexes. |
| Databáze: | OpenAIRE |
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