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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/37157
Record Status
Checked
Record Id
37157
Title
Muon implantation of meltallocenes: Ferrocene
Contributors
UA Jayasooriya
,
R Grinter
,
PL Hubbard
,
GM Aston
,
JA Stride
,
GA Hopkins
,
L Camus
,
ID Reid
,
SP Cottrell
,
SFJ Cox
Abstract
Muon Spin Relaxation and Avoided Level Crossing (ALC) measurements of ferrocene are reported. The main features observed are five high field resonances in the ALC spectrum at about 3.26, 2.44, 2.04, 1.19 and 1.17 T, for the low-temperature phase at 18 K. The high-temperature phase at 295 K shows that only the last feature shifted down to about 0.49 T and a muon spin relaxation peak at about 0.106 T which approaches zero field when reaching the phase transition temperature of 164 K. A model involving three muoniated radicals, two with rnuonium addition to the cyclopentadienyl ring and the other to the metal atom, is postulated to rationalise these observations. A theoretical treatment involving spin-orbit coupling is found to be required to understand the Fe-Mu adduct, where an interesting interplay between the ferrocene ring dynamics and the spin-orbit coupling of the unpaired electron is shown to be important. The limiting temperature above which the full effect of spin-orbit interaction is observable in the mu SR spectra of ferrocene was estimated to be 584 K. Correlation time for the ring rotation dynamics of the Fe-Mu radical at this temperature is 3.2 ps. Estimated electron g values and the changes in zero-field splittings for this temperature range are also reported.
Organisation
CCLRC
,
ISIS
,
ISIS-EMU
,
ISIS-MUONS
Keywords
SUBSTITUTED CYCLOHEXADIENYL RADICALS;
,
ORGANIC FREE-RADICALS
,
ORGANOMETALLIC COMPOUNDS
,
PHOTOELECTRON-SPECTRA
,
MOLECULAR-DYNAMICS
,
NEUTRON-SCATTERING
,
GAS-PHASE
,
RESONANCE
,
METALLOCENES
,
DERIVATIVES
,
ISIS 2007
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Chem Eur J
13, no. 8 (2007): 2266-2276.
doi:10.1002/chem.200600853
2007
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