2013
DOI: 10.1021/jp4068763
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Hyperfine Coupling Constants of the Cyclohexadienyl Radical in Benzene and Dilute Aqueous Solution

Abstract: The muon hyperfine coupling constant (Aμ) of the muoniated cyclohexadienyl radical (C6H6Mu) has been directly measured in a 5 mM solution of benzene in water by the radio-frequency muon spin resonance (RF-μSR) technique. The relative shift of Aμ in aqueous solution compared with the value in neat benzene (ΔAμ/Aμ = +0.98(5)% at 293 K) can now be compared directly with theoretical predictions. Application of the RF-μSR method to other dilute systems will provide extremely important information on understanding s… Show more

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Cited by 4 publications
(2 citation statements)
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“…Nuclear couplings are readily obtained by longitudinal field muon methods (avoided level crossing); however, a reliable determination of the muon coupling by a spin rotation experiment requires sample concentrations in excess of 100 mM, often making this measurement unfeasible. RF methods do not suffer from this limitation, and have been successfully used to measure concentrations as low as 5 mM during a recent study of the cyclohexadienyl radical in dilute aqueous solutions [19]. • Structure and dynamics of molecular systems: Muoniated spin probes have been used to study the partitioning of small amphiphiles in lamellar phase systems [17] and a chiral nematic liquid crystal [8].…”
Section: Introductionmentioning
confidence: 99%
“…Nuclear couplings are readily obtained by longitudinal field muon methods (avoided level crossing); however, a reliable determination of the muon coupling by a spin rotation experiment requires sample concentrations in excess of 100 mM, often making this measurement unfeasible. RF methods do not suffer from this limitation, and have been successfully used to measure concentrations as low as 5 mM during a recent study of the cyclohexadienyl radical in dilute aqueous solutions [19]. • Structure and dynamics of molecular systems: Muoniated spin probes have been used to study the partitioning of small amphiphiles in lamellar phase systems [17] and a chiral nematic liquid crystal [8].…”
Section: Introductionmentioning
confidence: 99%
“…To get a complete picture of the hyperfine constants often requires two different measurements, for example ALC and RF [1] or TF and ALC [2]. A method to obtain all the information in one run, with the same sample, is beneficial.…”
Section: Introductionmentioning
confidence: 99%