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Abstract The coordination chemistry of the unsymmetric, aliphatic, tetradentate tripodal ligand N((CH 2 CH 2 NH 2 )(CH 2 CH 2 OH)(CH 2 CH 2 CH 2 OH)) H 4 -1 with iron chlorides was investigated. The disodium salt of the deprotonated ligand Na 2 (H 2 -1) reacts with FeCl 3 to yield a yellow precipitate which upon recrystallization from DMSO/CH 2 Cl 2 gives red crystals of the octanuclear iron(III) complex ({Fe III Cl(H 2 -1)} 4 Fe III 4 (μ 4 -O) 4 Cl 4 ) 2 ・ 4CH 2 Cl 2 containing a central Fe 4 (μ 4 -O) 4 cubane core. Crystals of 2 ・4DMF were obtained by slow oxidation of the green iron(II) complex obtained from ferrous chloride and Na 2 (H 2 -1) after recrystallization from DMF. The structure determination of 2 ・4CH 2 Cl 2 also revealed the presence of the iron(III) oxo cubane core. The core is surrounded by four iron atoms each coordinated by η 4 -(H 2 -1) 2- and Cl - ligands.
Zeitschrift für Naturforschung B – de Gruyter
Published: Aug 1, 2004
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