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Titolo:
Spin frustration and concealed asymmetry: structure and magnetic spectrum of [Fe3O(O2CPh)(6)(py)(3)]ClO4 center dot py
Autore:
Sowrey, FE; Tilford, C; Wocadlo, S; Anson, CE; Powell, AK; Bennington, SM; Montfrooij, W; Jayasooriya, UA; Cannon, RD;
Indirizzi:
Univ E Anglia, Sch Chem Sci, Norwich NR4 7TJ, Norfolk, England Univ E Anglia Norwich Norfolk England NR4 7TJ h NR4 7TJ, Norfolk, England Rutherford Appleton Lab, Chilton OX11 0QX, England Rutherford Appleton Lab Chilton England OX11 0QX ilton OX11 0QX, England
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 6, , anno: 2001,
pagine: 862 - 866
SICI:
1472-7773(2001):6<862:SFACAS>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
INELASTIC NEUTRON-SCATTERING; ISOTOPIC-SUBSTITUTION; VIBRATIONAL-SPECTRA; METAL-COMPLEXES; CHROMIUM(III); CLUSTERS; IRON(III); MODEL; CR;
Keywords:
clusters; electronic effects; magnetic properties; molecular structure; neutron diffraction; neutron powder diffraction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Sowrey, FE Univ Kent, Sch Phys Sci, Canterbury CT2 7NZ, Kent, England UnivKent Canterbury Kent England CT2 7NZ 2 7NZ, Kent, England
Citazione:
F.E. Sowrey et al., "Spin frustration and concealed asymmetry: structure and magnetic spectrum of [Fe3O(O2CPh)(6)(py)(3)]ClO4 center dot py", J CHEM S DA, (6), 2001, pp. 862-866

Abstract

The oxo-centred trinuclear complex [Fe3O(O2CPh)(6)(py)(3)]ClO4. py and itsfully deuteriated analogue have been synthesized. X-Ray crystallography atT=233 K shows that the complex has threefold symmetry, space group P6(3)/m. Incoherent inelastic neutron scattering spectra at T=1.5 K however show the presence of two inequivalent sets of molecules, one a static "isosceles"coupled system, with two J values for the three metal-metal interactions, the other a dynamic system, with rapid pseudorotation between equivalent isosceles geometries. Combining infrared and neutron scattering data, the distortion of the cluster has been estimated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 08:42:47