Y. Sasaki et al., PREPARATION OF OXO-BRIDGED DINUCLEAR IRON(III) COMPLEXES WITH ONE OR 2 O,O'-BRIDGED OPTICALLY-ACTIVE AMINO-ACIDS, Chemistry Letters, (7), 1994, pp. 1185-1188
Amino-acid bridged diiron complexes, [Fe-2(mu-O)(mu-L)(2)(tacn)(2)](4) (tacn = 1,4,7-triazacyclononane; L = (S)-valine or (S)-proline) and
[Fe-2(mu-O)(mu-L)(tpa)(2)]4(+) (tpa = tris(2 pyridylmethyl)amine; L =
(S)valine, (S)-proline, or (S)-alanine) have been prepared. Crystal st
ructures of the two tacn complexes were determined. Electronic absorpt
ion spectra and redox properties of these complexes are similar to the
corresponding mu-acetate complexes.