Abstract
Treatment of the mu(3)-oxo-centered mixed-valent trinuclear iron complex [Fe-3(mu(3)-O)(mu-OAc)(6)(H2O)(3)] (1) in methanol solution with one, two, or three equivalents of 1-methyl-imidazole (C4H6N2) afforded the substitution products [Fe-3(mu(3)-O)(mu-OAc)(6)(H2O)2(()C(4)H(6)N(2))] (2), [Fe-3(mu(3)-O)(mu-OAc)(6)(H2O)(C4H6N2)(2)] (3), and [Fe-3(mu(3)-O)(mu-OAc)(6)(C4H6N2)(3)] (4), respectively. Complexes 2-4 were characterized by spectroscopic and elemental analyses, and the crystal structures of complexes 3.1.5MeOH center dot 2H(2)O and 4 have been determined by single-crystal X-ray diffraction. The results indicate that in 2-4 the trinuclear core unit [Fe-3(mu(3)-O)(mu-OAc)(6)] of 1 is preserved.