A novel tetranuclear iron(III) complex having L-alanine bridges and an unprecedented (Fe4(O2H)) Core

The reacion of L-alanine (L-ala) with Fe(NO3)2·9H2O in the presence of H5dhpta (1,3-diamino-2-hydroxypropane-N,N,N′,N′-tetraacetic acid) and base (NaOH) affords the novel tetranuclear complex Na[Fe4(dhpta)2(O)(OH)(L-ala)2]·6H2O having L-alaninato bridges and an (Fe4(O2H))9+ core whose crystal structure and magnetic properties were determined.