A hexanuclear iron(III) complex [Fe6O2(OH)2(PhCOO)10(hedmp)2] . 3CH3CN assembled from 2-hydroxyethyl-3,5-dimethyl pyrazole

Ramaswamy Murugavel (1, 2) , Nayanmoni Gogoi (1) , Rana Howlader (1) , Rodolphe Clérac (3, 4)

1 Department of Chemistry, Indian Institute of Technology
2 Center for Research in Nanotechnology and Science
3 CRPP - Centre de recherches Paul Pascal
4 UB - Université Sciences et Technologies - Bordeaux 1

In order to assemble polynuclear iron(III) complexes, the coordination chemistry of the 2-hydroxyethyl- 3,5-dimethylpyrazole (hedmp-H) ligand has been investigated. Reaction of hedmp-H with trinuclear iron carboxylate precursor [Fe3O(PhCOO)6(H2O)3]Cl in acetonitrile yielded the hexanuclear Fe(III) complex [Fe6O2(OH)2(PhCOO)10(hedmp)2].3CH3CN (1). This aggregate has been characterized by employing various analytical techniques, spectroscopic studies and single crystal X-ray diffraction. Detailed magnetic susceptibility measurements revealed that 1 displays an ST = 5 ground state.

Mots clés: Iron complexes; X-ray structure; Magnetic properties

Domaines: Chimie inorganique

Ramaswamy Murugavel, Nayanmoni Gogoi, Rana Howlader, Rodolphe Clérac. A hexanuclear iron(III) complex [Fe6O2(OH)2(PhCOO)10(hedmp)2] . 3CH3CN assembled from 2-hydroxyethyl-3,5-dimethyl pyrazole. Inorganica Chimica Acta, 2010, 363, pp. 3004-3009. ⟨10.1016/j.ica.2010.03.034⟩. ⟨hal-00531260⟩