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RESEARCH PRODUCT
Mössbauer effect study of the electronic ground state of iron(II)in tris(2-chlorophenanthroline)iron(II) perchlorate
K. M. HasselbachJ. FleischPhilipp Gütlichsubject
Mössbauer effectCondensed matter physicsChemistryAnalytical chemistrySpin transitionQuadrupole splittingAtmospheric temperature rangeMagnetic susceptibilityInorganic ChemistryPerchloratechemistry.chemical_compoundMaterials ChemistryCondensed Matter::Strongly Correlated ElectronsPhysical and Theoretical ChemistryGround stateElectric field gradientdescription
Abstract Mossbauer spectra of [Fe(2-Cl-phen) 3 ](ClO 4 ) 2 ·H 2 O have been measured in the temperature range 293 − 5 K. The spectra indicate that the iron atom in this compound possesses a spin quintet ground state throughout the temperature range under study, in contradiction to the suggested high spin-low spin transition, which has been concluded from a magnetic susceptibility study by other authors. From a theoretical analysis of the temperature dependence of the quadrupole splitting, with trigonal distortion, spin-orbit coupling, and effects of covalency taken into account, the ground term of iron(II) in this compound has been elucidated as being 5 A 1 ( 5 T 2g ), separated from the 5 E( 5 T 2g ) term by ca. 165 cm −1 . The principal component V zz of the electric field gradient tensor is negative. This result agrees with conclusions from magnetically perturbed Mossbauer spectra from other authors.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1976-01-01 | Inorganica Chimica Acta |