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RESEARCH PRODUCT

Substituent effects on the spin equilibrium in iron(II) pyrazolylborate complexes

Th. BuchenPhilipp Gütlich

subject

Spin statesInorganic chemistrySubstituentPyrazoleTolueneMagnetic susceptibilityInorganic Chemistrychemistry.chemical_compoundCrystallographychemistrySpin crossoverMaterials ChemistryPhysical and Theoretical ChemistrySpin (physics)Spectroscopy

description

Abstract Two new complexes of the iron(II) pyrazolylborate system, [Fe(HB(pz)(dmpz) 2 ) 2 ] and [Fe(HB(pz) 2 (dmpz)) 2 ] (pz = pyrazole, dmpz = 3,5-dimethylpyrazole), have been prepared and found to exhibit thermal spin crossover in toluene solutions by means of optical spectroscopy and magnetic susceptibility measurements. Comparison with the published magnetic behaviour of the complexes [Fe(HB(dmpz) 3 ) 2 ] and [Fe(HB(pz) 3 ) 2 ] shows that the high spin state is stabilized with an increasing number of methyl substituents.

yearjournalcountryeditionlanguage
1995-03-01Inorganica Chimica Acta
https://doi.org/10.1016/0020-1693(94)04337-u