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Muon radical states in some electron donor and acceptor molecules
Author(s) -
Pratt F. L.,
Blundell S. J.,
Jestädt Th.,
Lovett B. W.,
Macrae R. M.,
Hayes W.
Publication year - 2000
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/1097-458x(200006)38:13<::aid-mrc695>3.0.co;2-w
Subject(s) - muonium , chemistry , muon , hyperfine coupling , hyperfine structure , molecule , acceptor , electron , cleavage (geology) , electron acceptor , photochemistry , coupling constant , bond cleavage , atomic physics , crystallography , radical , physics , condensed matter physics , nuclear physics , catalysis , organic chemistry , geotechnical engineering , particle physics , fracture (geology) , engineering
Muon radical states were studied in the electron donor molecules TTF and BEDT‐TTF and in the electron acceptor molecule TCNQ. Muonium addition to double bond carbon sites results in hyperfine coupling contants ranging from 350 MHz in TTF down to 80 MHz for TCNQ. In TTF and BEDT‐TTF additional radical states with extremely low hyperfine coupling constants in the 5 MHz region are observed; these are assigned to muon addition at sulphur sites accompanied by C — S bond cleavage. Copyright © 2000 John Wiley & Sons, Ltd.