TY - JOUR
T1 - Coupled relaxation in AX2 spin systems. Dependence of effective relaxation times on method of measurement and application to determining internuclear distances
AU - Scrivens, James
AU - Heatley, F.
PY - 1976/12/1
Y1 - 1976/12/1
N2 - A simple treatment of relaxation in AX2 all-proton systems shows that under certain conditions the effective spin-lattice relaxation time of the total A or X signal depends on the method of measurement. The calculations have been confirmed by measurements on 1,3-dinitro-2-chlorobenzene in CDCl 3 and 1,1,2-trichloroethane in CDCl3, (CD 3)2CO and C6D6. The experimental relaxation times, together with nuclear Overhauser enhancements, have been used to determine internuclear distances and rotational correlation times. There is good agreement with values of these parameters obtained from independent sources.
AB - A simple treatment of relaxation in AX2 all-proton systems shows that under certain conditions the effective spin-lattice relaxation time of the total A or X signal depends on the method of measurement. The calculations have been confirmed by measurements on 1,3-dinitro-2-chlorobenzene in CDCl 3 and 1,1,2-trichloroethane in CDCl3, (CD 3)2CO and C6D6. The experimental relaxation times, together with nuclear Overhauser enhancements, have been used to determine internuclear distances and rotational correlation times. There is good agreement with values of these parameters obtained from independent sources.
UR - http://www.scopus.com/inward/record.url?scp=3343018025&partnerID=8YFLogxK
U2 - 10.1039/F29767202164
DO - 10.1039/F29767202164
M3 - Article
AN - SCOPUS:3343018025
SN - 0300-9238
VL - 72
SP - 2164
EP - 2170
JO - Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
JF - Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
ER -