title: On the possibility of magneto-structural correlations: detailed studies of dinickel carboxylate complexes.
abstract: A series of water-bridged dinickel complexes of the general formula [Ni2(μ2-OH2)(μ2-O2C(t)Bu)2(O2C(t)Bu)2(L)(L')] (L = HO2C(t)Bu, L' = HO2C(t)Bu (1), pyridine (2), 3-methylpyridine (4); L = L' = pyridine (3), 3-methylpyridine (5)) has been synthesized and structurally characterized by X-ray crystallography. The magnetic properties have been probed by magnetometry and EPR spectroscopy, and detailed measurements show that the axial zero-field splitting, D, of the nickel(II) ions is on the same order as the isotropic exchange interaction, J, between the nickel sites. The isotropic exchange interaction can be related to the angle between the nickel centers and the bridging water molecule, while the magnitude of D can be related to the coordination sphere at the nickel sites.
authors: School of Chemistry and Photon Science Institute, The University of Manchester , Manchester M13 9PL, United Kingdom.
authors: James P S
authors: JP
authors: Walsh
authors: Stephen
authors: S
authors: Sproules
authors: Nicholas F
authors: NF
authors: Chilton
authors: Anne-Laure
authors: AL
authors: Barra
authors: Grigore A
authors: GA
authors: Timco
authors: David
authors: D
authors: Collison
authors: Eric J L
authors: EJ
authors: McInnes
authors: Richard E P
authors: RE
authors: Winpenny