Interference of homonuclear decoupling and exchange in the solid-state NMR of perfluorocyclohexane.
We observe an interference between RF irradiation used for homonuclear decoupling of 19F and conformational exchange in the 13C spectrum of perfluorocyclohexane. We show that these effects can be readily reproduced in simulation, and characterise their dependence on the various NMR and experimental parameters. Their application to observing exchange rates on the kHz timescale is evaluated with respect to T(1rho) measurements and the connections between the two approaches established. The implications for experiments that use homonuclear decoupling of 1H to resolve 1J(CH)couplings in the solid-state are also evaluated in detail.
McMillan
Deborah E
DE
Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, UK.
Hazendonk
Paul
P
Hodgkinson
Paul
P