Coupled relaxation in AX2 spin systems. Dependence of effective relaxation times on method of measurement and application to determining internuclear distances

James Scrivens; F. Heatley

doi:10.1039/F29767202164

Coupled relaxation in AX₂ spin systems. Dependence of effective relaxation times on method of measurement and application to determining internuclear distances

James Scrivens
, F. Heatley

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	2164-2170
Number of pages	7
Journal	Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
Volume	72
DOIs	https://doi.org/10.1039/F29767202164
Publication status	Published - 1 Dec 1976

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title = "Coupled relaxation in AX2 spin systems. Dependence of effective relaxation times on method of measurement and application to determining internuclear distances",

abstract = "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.",

author = "James Scrivens and F. Heatley",

year = "1976",

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doi = "10.1039/F29767202164",

language = "English",

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journal = "Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics",

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publisher = "Faraday Division of the Chemical Society",

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Coupled relaxation in AX₂ spin systems. Dependence of effective relaxation times on method of measurement and application to determining internuclear distances. / Scrivens, James; Heatley, F.
In: Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, Vol. 72, 01.12.1976, p. 2164-2170.

Research output: Contribution to journal › Article › peer-review

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.

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U2 - 10.1039/F29767202164

DO - 10.1039/F29767202164

M3 - Article

AN - SCOPUS:3343018025

SN - 0300-9238

VL - 72

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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 -

Coupled relaxation in AX₂ spin systems. Dependence of effective relaxation times on method of measurement and application to determining internuclear distances

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