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Titolo:
Magnetic anisotropy of a cyclic octanuclear Fe(III) cluster and magneto-structural correlations in molecular ferric wheels
Autore:
Waldmann, O; Koch, R; Schromm, S; Schulein, J; Muller, P; Bernt, I; Saalfrank, RW; Hampel, F; Balthes, E;
Indirizzi:
Univ Erlangen Nurnberg, Inst Phys 3, D-91058 Erlangen, Germany Univ Erlangen Nurnberg Erlangen Germany D-91058 -91058 Erlangen, Germany Univ Erlangen Nurnberg, Inst Organ Chem, D-91058 Erlangen, Germany Univ Erlangen Nurnberg Erlangen Germany D-91058 -91058 Erlangen, Germany CNRS, Grenoble High Magnet Field Lab, F-38042 Grenoble, France CNRS Grenoble France F-38042 Magnet Field Lab, F-38042 Grenoble, France MPI, FKF, F-38042 Grenoble 9, France MPI Grenoble France 9MPI, FKF, F-38042 Grenoble 9, France
Titolo Testata:
INORGANIC CHEMISTRY
fascicolo: 13, volume: 40, anno: 2001,
pagine: 2986 - 2995
SICI:
0020-1669(20010618)40:13<2986:MAOACO>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENTRAPPING ALKALINE IONS; NUCLEARITY SPIN CLUSTERS; IRON(III) IONS; OXO CLUSTERS; RINGS; DEPENDENCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Waldmann, O Univ Erlangen Nurnberg, Inst Phys 3, D-91058 Erlangen, GermanyUniv Erlangen Nurnberg Erlangen Germany D-91058 gen, Germany
Citazione:
O. Waldmann et al., "Magnetic anisotropy of a cyclic octanuclear Fe(III) cluster and magneto-structural correlations in molecular ferric wheels", INORG CHEM, 40(13), 2001, pp. 2986-2995

Abstract

The magnetic anisotropy of the cyclic octanuclear Fe(m) cluster [Cs subsetof Fe-8{N(CH2CH2O)(3)}(8)]Cl was investigated. Based on a spin Hamiltonianformalism and the consequent use of all symmetries, the magnetic;anisotropy could be calculated exactly to first order, i.e., in the strong exchange limit; Experimentally, the magnetic anisotropy was investigated by magneticsusceptibility and high-field torque magnetometry of single crystals. The field and angle dependence of the torque at 1.7 K could be accurately reproduced by the calculations with one single parameter set, providing accurateresults for the coupling constant and single-ion zero-field-splitting. These magnetic parameters are compared to those of several related hexanuclearferric wheels and are discussed with respect to magneto-structural correlations for both coupling constant and single-ion anisotropy.

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Documento generato il 09/08/20 alle ore 22:34:27