Synthesis and magnetic properties of a new hexanuclear iron(III) compound
A hexanuclear Fe(III) compound with new core topology, [Fe6(OMe)2(DHMP)4(AD)2] (1, H3DHMP=(E)-2-((1,3-dihydroxy-2-methylpropan-2-ylimino)methyl)phenol, H2AD=adipic acid), is reported. The hexanuclear Fe(III) core can be viewed as two Fe3(DHMP)2 units connected through double μ2-OMe− bridges, featuring adjacent Fe···Fe distances of 3.105 and 3.109Å within unit and 3.111Å between units, respectively. Variable temperature magnetic studies indicate antiferromagnetic exchanges between adjacent Fe(III) ions and which mediated by μ2-OMe− bridges is stronger than those by DHMP alkoxo bridges. Magnetic-structural correlation is also proposed.