S. Yano et al., A NOVEL TETRANUCLEAR IRON(III) COMPLEX HAVING L-ALANINE BRIDGES AND AN UNPRECEDENTED (FE-4(O2H)) CORE, Chemistry Letters, (1), 1996, pp. 61-62
The reaction of L-alanine (L-ala) with Fe(NO3)(2) . 9H(2)O in the pres
ence of H(5)dhpta 1,3-diamino-2-hydroxypropane-N,N,N',N'-tetraacetic a
cid) and base (NaOH) affords the novel tetranuclear complex Na[Fe-4(dh
pta)(2)(O)(OH)(L-ala)(2)]. 6H(2)O having L-alaninato bridges and an (F
e-4(O2H))(9+) core whose crystal structure and magnetic properties wer
e determined.