A dinuclear Mn(II) chloro-bridged compound with a weak ferromagnetic Mn-Mn interaction - Synthesis, structure, EPR and magnetism of [Mn(mu-Cl)(2,2 '-bi-imidazoline)(2)](2)Cl-2

摘要

In this study an unusual dinuclear bis-chloride bridged Mn(11) Compound, [Mn(mu-Cl)(biz)(2)](2)Cl-2 (in which biz = 2,2'-bi-imidazoline), has been described and characterised. Also the magnetic Susceptibility and EPR investigations are made. The distorted octahedral geometry around the Mn(II) ion is formed by four nitrogen atoms of two dichelating biz ligands and two bridging chloride atoms. The lattice is further stabilised by hydrogen bonds between Uncoordinating N atoms of the ligand and the coordinating and uncoordinating chloride atoms. Magnetic susceptibility measurements reveal a weak ferromagnetic interaction between the two high-spin M n(II) ions of J = 0.3 cm(-1). (C) 2004 Elsevier Ltd. All rights reserved.