| Abstract
| - The monometallic precursor L1Cu (L1H2 standing for 1,3-bis((3-methoxysalicylidene)amino)-2,2‘-dimethylpropane) reacts with GdCl3·6H2O to afford a dinuclear complex which possesses an almost planar CuO2Gd bridging core and displays a ferromagnetic interaction (10.1 cm-1) which is the largest yet reported for a structurally characterized dinuclear (Cu−Gd) complex.
- The monometallic precursor L1Cu (L1H2 standing for 1,3-bis((3-methoxysalicylidene)amino)-2,2‘-dimethylpropane)reacts with GdCl3·6H2O to afford a dinuclear complex which crystallizes in the orthorhombic space group Pca21(No. 29) in a cell having the dimensions a = 9.0246(11) Å, b = 16.5198(14) Å, c = 20.286(2) Å, and Z = 4.Analysis of the structural data shows that it may be formulated as [L1CuCl2Gd(H2O)4]Cl·2H2O. The cationicdinuclear unit possesses a CuO2Gd bridging core which is almost planar. The complex displays a ferromagneticinteraction (10.1 cm-1) which is the largest yet reported for a structurally characterized dinuclear (Cu−Gd) complex.Lower magnetic interactions are observed for neutral L1CuGdX3·H2O complexes (X = N3C2, CF3COO).Consideration of the magnetic and structural data obtained for various dinuclear (Cu−Gd) complexes leads to acorrelation between the magnitude of the magnetic interaction and the exponential of the dihedral angle betweenthe two halves of the CuO2Gd bridging core.
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