57Fe Mössbauer Studies of the Bulky Ring-Substituted Ferrocenes; [C5Me4(p-C6H4Y)]2Fe

Björgvinsson, M.; Helgason, O.; Haraldsson, M. H.

doi:10.1007/978-94-010-0299-8_12

M. Björgvinsson²,
O. Helgason² &
M. H. Haraldsson²

261 Accesses

Abstract

A series of bulky ring-substituted ferrocenes [η ⁵-C₅Me₄(p-C₆H₄Y)]₂Fe (Y = H, Me, OMe, F, Cl or CF₃) or (Cp^xpy)₂Fe has been synthesized and studied by ⁵⁷Fe Mössbauer spectroscopy at different temperatures. The hyperfine parameters for all the samples are almost identical, except for Y = H, (Cp^xph)₂Fe, where the quadrupole splitting (QS) is significantly larger. The X-ray crystal structure was determined for (Cp^xph)₂Fe, (Cp^xpcl)₂Fe and (Cp^xpom)₂Fe. Two different orientations of the C₆H₄Y rings are observed in the molecular structures; a perpendicular one for (Cp^xph)₂Fe and a parallel one for (Cp^xpcl)₂Fe and (Cp^xpom)₂Fe. However, this structural difference is not reflected in a study on the temperature dependency of the recoil free fraction of these three ferrocenes.

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Science Institute, University of Iceland, Dunhagi 3, IS-107, Reykjavík, Iceland
M. Björgvinsson, O. Helgason & M. H. Haraldsson

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M. Björgvinsson
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O. Helgason
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M. H. Haraldsson
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Old Dominion University, Norfolk, Virginia, USA
Desmond C. Cook & Gilbert R. Hoy &

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Björgvinsson, M., Helgason, O., Haraldsson, M.H. (2002). ⁵⁷Fe Mössbauer Studies of the Bulky Ring-Substituted Ferrocenes; [C₅Me₄(p-C₆H₄Y)]₂Fe. In: Cook, D.C., Hoy, G.R. (eds) Industrial Applications of the Mössbauer Effect. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0299-8_12

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DOI: https://doi.org/10.1007/978-94-010-0299-8_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3950-5
Online ISBN: 978-94-010-0299-8
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