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Título

Synthesis, crystal structure and magnetic properties of (acetato-κ2O,O′)bis(5,5′-dimethyl-2,2′-bipyridine-κ2N,N′)nickel(II) perchlorate monohydrate

AutorFarkašová, Nela; Černák, Juraj; Falvello, Larry R. CSIC ORCID; Orendáč, Martin; Boča, Roman
Palabras claveMagnetic properties
Nickel complex
Crystal structure;5,5′-dimethyl-2,2′-bipyridine
Acetate
Hydrogen bonds
Fecha de publicaciónabr-2015
EditorInternational Union of Crystallography
John Wiley & Sons
CitaciónActa Crystallographica Section C 71(4): 252–257(2015)
ResumenThe title hydrated ionic complex, [Ni(CH3COO)(C12H12N2)2]ClO4·H2O or [Ni(ac)(5,5′-dmbpy)2]ClO4·H2O (where 5,5′-dmbpy is 5,5′-dimethyl-2,2′-bipyridine and ac is acetate), (1), was isolated as violet crystals from the aqueous ethanolic nickel acetate–5,5′-dmbpy–KClO4 system. Within the complex cation, the NiII atom is hexacoordinated by two chelating 5,5′-dmbpy ligands and one chelating ac ligand. The mean Ni—N and Ni—O bond lengths are 2.0628 (17) and 2.1341 (15) Å, respectively. The water solvent molecule is disordered over two partially occupied positions and links two complex cations and two perchlorate anions into hydrogen-bonded centrosymmetric dimers, which are further connected by π–π interactions. The magnetic properties of (1) at low temperatures are governed by the action of single-ion anisotropy, D, which arises from the reduced local symmetry of the cis-NiO2N4 chromophore. The fitting of the variable-temperature magnetic data (2–300 K) gives giso = 2.134 and D/hc = 3.13 cm−1.
Versión del editorhttp://dx.doi.org/10.1107/S2053229615003952
URIhttp://hdl.handle.net/10261/121192
DOI10.1107/S2053229615003952
E-ISSN2053-2296
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