SUBSTITUENT EFFECTS ON THE SPIN EQUILIBRIUM IN IRON(II) PYRAZOLYLBORATE COMPLEXES

Authors
BUCHEN T GUTLICH P
Citation
T. Buchen et P. Gutlich, SUBSTITUENT EFFECTS ON THE SPIN EQUILIBRIUM IN IRON(II) PYRAZOLYLBORATE COMPLEXES, Inorganica Chimica Acta, 231(1-2), 1995, pp. 221-223
Citations number
12
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganica Chimica Acta → ACNP
ISSN journal
00201693
Volume
231
Issue
1-2
Year of publication
1995
Pages
221 - 223
Database
ISI
SICI code
0020-1693(1995)231:1-2<221:SEOTSE>2.0.ZU;2-4
Abstract
Two new complexes of the iron(II) pyrazolylborate system, [Fe(HB(pz)(d mpz)(2))(2)] and [Fe(HB(pz)(2)(dmpz))(2)] (pz=pyrazole, dmpz=3,5-dimet hylpyrazole), have been prepared and found to exhibit thermal spin cro ssover in toluene solutions by means of optical spectroscopy and magne tic susceptibility measurements. Comparison with the published magneti c 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 num ber of methyl substituents.