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RESEARCH PRODUCT

Structural, magnetic and electronic characterization of an isostructural series of dinuclear complexes of 3d metal ions bridged by tpbd

Eva RentschlerFrank Reuter

subject

Absorption spectroscopyChemistryMetal ions in aqueous solutionInorganic chemistryBridging ligandElectrochemistryCharacterization (materials science)Inorganic ChemistryMetalCrystallographyvisual_artMaterials Chemistryvisual_art.visual_art_mediumPhysical and Theoretical ChemistryIsostructuralGround state

description

Abstract Dinuclear complexes of the type [{M(H2O)(phen)}2(μ-tpbd)](ClO4)4 with N,N,N′,N′-Tetrakis-(2-pyridylmethyl)-benzene-1,4-diamine (tpbd) as bridging ligand and M = Mn(II) (1), Fe(II) (2), Co(II) (3), Ni(II) (4), Cu(II) (5), Zn(II) (6) were synthesized, structurally analyzed and their magnetic as well as their electrochemical properties are determined. A ligand-centered one-electron oxidation leads to radical complexes for which the lifetimes are strongly dependent on the coordinated metal ion as followed from time-resolved UV–Vis absorption spectroscopy. In addition to the six homometallic dinuclear complexes, one analog heterometallic Mn(II)/Ni(II) compound (7) of the same constitution was structurally and magnetically investigated, confirming an high spin ground state.

https://doi.org/10.1016/j.poly.2012.07.050