6533b7d4fe1ef96bd12633c7

RESEARCH PRODUCT

A Binuclear MnIII Complex of a Scorpiand-Like Ligand Displaying a Single Unsupported MnIII–O–MnIII Bridge

Santiago García-grandaJoan CanoSalvador BlascoM. Paz ClaresEnrique García-españaFrancesc LloretHermas R. JiménezAntonio DoménechBegoña Verdejo

subject

Models MolecularManganeseMagnetic Resonance SpectroscopyChemistryLigandBridging ligandNuclear magnetic resonance spectroscopyCrystal structureCrystallography X-RayLigandsMagnetic susceptibilityInorganic ChemistryMetalCrystallographyParamagnetismCoordination Complexesvisual_artMagnetsvisual_art.visual_art_mediumProton NMRPhysical and Theoretical ChemistryOxygen Compounds

description

The crystal structure of a binuclear Mn(III) complex of a scorpiand-like ligand (L) displays an unsupported single oxo bridging ligand with a Mn(III)-O-Mn(III) angle of 174.7°. Magnetic susceptibility measurements indicate strong antiferromagnetic coupling between the two metal centers. DFT calculations have been carried out to understand the magnetic behavior and to analyze the nature of the observed Jahn-Teller distortion. Paramagnetic (1)H NMR has been applied to rationalize the formation and magnetic features of the complexes formed in solution.

https://doi.org/10.1021/ic3016063