Abstract
Indirect, three-spin effects in the 13C isotopomers arising from abundant or dilute spins are analyzed theoretically and by experiments including mono- and biselective heteronuclear NOE measurements, homonuclear NOE factors, and selective relaxation rates. An extension of the Kuhlmann-Grant-Harris heteronuclear NOE theory to dilute spins allows the determination of direct relaxation rates in AMX spin systems. This method was used successfully for carbon-proton distance measurement in the range of 0.1-0.4 nm in small, rigid, isotropically reorienting organic molecules even in the presence of negative, indirect NOE. The first example of such effects at quaternary carbons in their natural abundance is presented.
| Original language | English |
|---|---|
| Pages (from-to) | 477-486 |
| Number of pages | 10 |
| Journal | Journal of Magnetic Resonance (1969) |
| Volume | 73 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1987 |
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Quantitative 13C-{1H} NOE spectroscopy at natural abundance. The role of indirect effects. / Batta, G.; Kövér, K.; Mádi, Zoltán.
In: Journal of Magnetic Resonance (1969), Vol. 73, No. 3, 1987, p. 477-486.Research output: Article
}
TY - JOUR
T1 - Quantitative 13C-{1H} NOE spectroscopy at natural abundance. The role of indirect effects
AU - Batta, G.
AU - Kövér, K.
AU - Mádi, Zoltán
PY - 1987
Y1 - 1987
N2 - Indirect, three-spin effects in the 13C isotopomers arising from abundant or dilute spins are analyzed theoretically and by experiments including mono- and biselective heteronuclear NOE measurements, homonuclear NOE factors, and selective relaxation rates. An extension of the Kuhlmann-Grant-Harris heteronuclear NOE theory to dilute spins allows the determination of direct relaxation rates in AMX spin systems. This method was used successfully for carbon-proton distance measurement in the range of 0.1-0.4 nm in small, rigid, isotropically reorienting organic molecules even in the presence of negative, indirect NOE. The first example of such effects at quaternary carbons in their natural abundance is presented.
AB - Indirect, three-spin effects in the 13C isotopomers arising from abundant or dilute spins are analyzed theoretically and by experiments including mono- and biselective heteronuclear NOE measurements, homonuclear NOE factors, and selective relaxation rates. An extension of the Kuhlmann-Grant-Harris heteronuclear NOE theory to dilute spins allows the determination of direct relaxation rates in AMX spin systems. This method was used successfully for carbon-proton distance measurement in the range of 0.1-0.4 nm in small, rigid, isotropically reorienting organic molecules even in the presence of negative, indirect NOE. The first example of such effects at quaternary carbons in their natural abundance is presented.
UR - http://www.scopus.com/inward/record.url?scp=0346803883&partnerID=8YFLogxK
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U2 - 10.1016/0022-2364(87)90010-2
DO - 10.1016/0022-2364(87)90010-2
M3 - Article
AN - SCOPUS:0346803883
VL - 73
SP - 477
EP - 486
JO - Journal of Magnetic Resonance (1969)
JF - Journal of Magnetic Resonance (1969)
SN - 0022-2364
IS - 3
ER -