New hexanuclear FeIII clusters with the gem-diol hydrated form of di(2-pyridyl)ketone and carboxylato ligands: Crystal structures and magnetic properties
Abstract The hexanuclear compounds [Fe6O2Cl2{(py)2CO2}2(pyOH)2(pyCOO)2(ButCOO)6] (1) and [Fe6O2{(py)2CO2}2(pyCOO)4(ButCOO)6] (2) were obtained by condensation of the trinuclear μ3-oxo-centered iron(III) pivalate [Fe3O(ButCOO)6(H2O)3]+ in the presence of di(2-pyridyl)ketone [(py)2CO] in MeCN at ambient temperature. Both complexes contain an analogous core which can be described as two {Fe3O}7+ units joined by gem-diolato (py)2CO22− bridges. Variable-temperature magnetic susceptibility measurements in polycrystalline samples of 1 and 2 reveal strong antiferromagnetic couplings between the iron(III) ions leading to S = 0 ground states.
CCDC 1901540: Experimental Crystal Structure Determination
Related Article: Livia Arizaga, Walter Cañon-Mancisidor, Jorge S. Gancheff, Robert A. Burrow, Donatella Armentano, Francesc Lloret, Ricardo González, Carlos Kremer, Raúl Chiozzone|2019|Polyhedron|174|114165|doi:10.1016/j.poly.2019.114165
CCDC 1901541: Experimental Crystal Structure Determination
Related Article: Livia Arizaga, Walter Cañon-Mancisidor, Jorge S. Gancheff, Robert A. Burrow, Donatella Armentano, Francesc Lloret, Ricardo González, Carlos Kremer, Raúl Chiozzone|2019|Polyhedron|174|114165|doi:10.1016/j.poly.2019.114165