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Binuclear Nickel(II) Complexes Based on Bridging Oxalate and Pseudohalides as Peripheral Ligands: Synthesis, Crystal Structure, DFT Calculations and Magnetic Properties of [{Ni(X)(dien)} 2 (μ‐ox)]· n H 2 O Complexes (X = N 3 − , NCS − , n = 0; NCO − , n = 1)
Author(s) -
Muga Iñaki,
GutiérrezZorrilla Juan M.,
Vitoria Pablo,
Luque Antonio,
Insausti Maite,
Román Pascual,
Lloret Francesc
Publication year - 2000
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200012)2000:12<2541::aid-ejic2541>3.0.co;2-o
Subject(s) - chemistry , nickel , isostructural , crystallography , oxalate , ligand (biochemistry) , intramolecular force , denticity , magnetic susceptibility , diethylenetriamine , octahedron , crystal structure , bridging ligand , stereochemistry , inorganic chemistry , biochemistry , receptor , organic chemistry
Nickel(II) molecular complexes were obtained by water displacement reactions of [{Ni(dien)(H 2 O)} 2 (μ‐ox)]Cl 2 and the corresponding pseudohalide. The three nickel(II) compounds [{Ni(N 3 )(dien)} 2 (μ‐ox)] ( 1 ), [{Ni(NCO)(dien)} 2 (μ‐ox)] · H 2 O ( 2 ) and [{Ni(NCS)(dien)} 2 (μ‐ox)] ( 3 ) are almost isostructural. The structure determinations reveal the presence of a binuclear complex with C 2h symmetry, where the oxalate ligand is coordinated in a bis(bidentate) fashion to the twofold related nickel atoms. The distorted octahedral environment of each nickel atom is completed by the three nitrogen atoms of the diethylenetriamine ligand in a fac arrangement and one nitrogen atom from a pseudohalide ligand. Magnetic susceptibility data in the temperature range 4.2−300 K shows intramolecular antiferromagnetic coupling.