Inorganic Chemistry, Vol.47, No.23, 11314-11323, 2008
Reversible Core-interconversion of an Iron(III) Dihydroxo Bridged Complex
Complexes [Fe(Hhbi)(2)(NO3)]center dot.2EtOH (1.2EtOH) and [Fe-2(mu-OH)(2)(Hhbi)(4)]center dot 2H(2)O center dot 8EtOH (2.2H(2)O center dot 8EtOH) crystallize in the orthorhombic Fdd2 and P4(2)2(1)2 space groups, respectively (Hhbi- = the monoanion of 2-(2'-hydroxyphenyl benzimidazole). Complex 1 exhibits paramagnetic relaxation as evidenced by Mossbauer spectroscopy, and significant axial zero-field splitting (1.5 cm(1)