6533b7d7fe1ef96bd1268d08

RESEARCH PRODUCT

Unprecedented multistability in dodecanuclear complex compound observed by Mössbauer spectroscopy

D. HillJ. HefnerM. KleinFranz Renz

subject

Inorganic ChemistryCrystallographyNuclear magnetic resonanceChemistryAtomic electron transitionMössbauer spectroscopyMaterials ChemistryPhysical and Theoretical Chemistry

description

Abstract The precursors [Fe(III)( 5X L)Cl] ( 5X LH 2  =  N , N ′-bis(1-hydroxy-2-benzyliden)-1,6-diamino-3-X-hexane, X = N,S) are high-spin ( S  = 5/2) complexes. This precursors are combined with the bridging unit [(NC) 5 Fe(II)-CN-Co(III)(CN) 5 ] 6− to yield star-shaped dodecanuclear clusters, [( 5X LFe(III)-NC) 5 Fe(II)-CN-Co(III)(CN-Fe(III) 5X L) 5 ]Cl 4 . The star-shaped compounds are high-spin systems at room temperature. On cooling to 20 K some of the iron(III) centers in the N-star switch to the low-spin state as proven by Mossbauer spectroscopy, i.e. multiple electronic transitions, while the S-star remains in the high-spin state.

yearjournalcountryeditionlanguage
2007-06-01Polyhedron
https://doi.org/10.1016/j.poly.2006.11.041