6533b7ddfe1ef96bd127482d
RESEARCH PRODUCT
A five-coordinate manganese(iii) complex of a salen type ligand with a positive axial anisotropy parameter D.
Sergiu ShovaMaria CazacuJoshua TelserVladimir B. ArionJoan CanoDenisa DarvasiováMartin BrezaPeter RaptaAngelica VladLukas BucinskyJ. Krzysteksubject
Absorption spectroscopy010405 organic chemistryAnalytical chemistrychemistry.chemical_elementManganese010402 general chemistry01 natural sciencesMagnetic susceptibilitySpectral line0104 chemical scienceslaw.inventionInorganic ChemistryMagnetizationchemistrylawPhysical chemistryElectron paramagnetic resonanceAnisotropySpectroscopydescription
A new high-spin d4 roughly trigonal–bipyramidal (TBP) manganese(III) complex with a salen type ligand (H2L), namely MnL(NCS)·0.4H2O, has been synthesised and characterised by elemental analysis, ESI mass spectrometry, IR and UV-vis spectroscopy, and spectroelectrochemistry. X-ray diffraction analysis revealed an axial compression of the approximate TBP. Temperature dependent magnetic susceptibility and variable-temperature variable-field (VTVH) magnetisation measurements, as well as high-frequency and -field EPR (HFEPR) spectroscopy, were used to accurately describe the magnetic properties of this complex and, in particular, determine the spin Hamiltonian parameters: g-values and the zero-field splitting (ZFS) parameters D and E. The HFEPR spectra allowed the extraction of fourth order ZFS parameters. Quantum chemical calculations reproduced well the electronic and geometric structures of this unusual complex and, in particular, its electronic absorption spectrum along with the spin Hamiltonian parameters.
year | journal | country | edition | language |
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2017-08-30 | Dalton transactions (Cambridge, England : 2003) |