Cross-correlation effects in multiplet spectra of 13C

Daragan, Vladimir A.; Khazanovich, T. N.; Stepanyants, A. U.

doi:10.1016/0009-2614(74)89091-3

Cited by 26 publications

(12 citation statements)

References 9 publications

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“…For the longitudinal case, we used the simple carbon-13 inversion-recovery experiment without proton decoupling [6,14,16,[47][48][49]. For the CCRR experiments, a 10 Hz line broadening was used.…”

Section: Methodsmentioning

confidence: 99%

NMR relaxation interference effects and internal dynamics in γ-cyclodextrin

Ghalebani

Kotsyubynskyy

Kowalewski

2008

Journal of Magnetic Resonance

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Section: Methodsmentioning

confidence: 99%

NMR relaxation interference effects and internal dynamics in γ-cyclodextrin

Ghalebani

Kotsyubynskyy

Kowalewski

2008

Journal of Magnetic Resonance

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“…For the longitudinal case, we have mainly used the simple carbon-13 inversion-recovery experiment without proton decoupling (16)(17)(18)(19)(20)(21)(22). For the longitudinal case, we have mainly used the simple carbon-13 inversion-recovery experiment without proton decoupling (16)(17)(18)(19)(20)(21)(22).…”

Section: Methodsmentioning

confidence: 99%

“…[14]- [16] correspond to the sum of intensities of the quartet components for the spin A, M, and X, respectively. A solution spectrum of an AMX spin system, with all J-couplings differing from zero, consists of a quartet of lines for each of the spins.…”

Section: Theoreticalmentioning

confidence: 99%

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Cross‐correlated and conventional dipolar carbon‐13 relaxation in methylene groups in small, symmetric molecules

Ghalebani

Bernatowicz

Aski

et al. 2007

Concepts Magnetic Resonance

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A theory for dipolar cross-correlated relaxation processes in AMX or AX 2 spin system, with special reference to 13 C-methylene groups, is reviewed briefly. Simple experiments and protocols for measuring the transfer rates between the carbon-13 Zeeman order and the three-spin order, and for their analogues in the transverse plane, are discussed using a concentrated solution of the disaccharide trehalose as a model system. Experimental data sets consisting of conventional carbon-13 relaxation parameters (T 1 , T 2 , and NOE), along with the cross-correlated relaxation rates, are also presented for some small, rigid, polycyclic molecules. These data are interpreted using spectral density functions appropriate to spherical or symmetric tops reorienting according to small-step rotational diffusion model. The analysis results in a consistent picture of the auto-and cross-correlated spin relaxation processes.

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“…This information is also, in many common situations, highly interesting because the methylene groups can be expected to undergo other motions than reorientation of the molecule as a whole. In fact, several groups have used a similar approach before [4,9,[17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%