Synthesis and magnetic properties of a dinuclear manganese(II) complex with two manganese(II) ions of C2-twisted octahedral geometry

A dinuclar manganese(II) complex [Mn2(sym-hcp)2](BPh4)2·2acetone·2H2O (1) was synthesized with a new dinucleating ligand, 4-chloro-2,6-bis[(2-hydroxyethyl)methylaminomethyl]phenol [H(sym-hcp)], for the purpose of studying the magnetic properties. The single-crystal X-ray analysis revealed a bis-μ-phenolato-dimanganese(II) core structure containing two distorted octahedral manganese(II) ions of C2 symmetry. The order of the coordination bond lengths is Mn–O(phenolato) < Mn–O(hydroxy) < Mn–N. Magnetic susceptibility data for 1 was fitted well with the parameters 2J = −0.93 cm−1 and g = 2.03, indicating weak antiferromagnetic interaction.

A dinuclar manganese(II) complex [Mn2(sym-hcp)2](BPh4)2·2acetone·2H2O (1) has a bis(μ-phenoxo)dimanganese(II) core structure. Magnetic data indicates weak antiferromagnetic interaction (2J = −0.93 cm−1) between the manganese(II) ions.Figure optionsDownload as PowerPoint slide