TY - JOUR
T1 - NMR of molecules partially oriented in the gas phase
AU - van Zijl, Peter C.M.
AU - MacLean, C.
AU - Skoglund, Cynthia
AU - Bothner-By, Aksel A.
N1 - Funding Information:
We thank Professor Jiri Jonas (Urbana, Ill.) for correspondence, Mr. B. H. Ruessink for discussions, and Professor Joe Dadok for experimental ideas and help. The investigations were supported by the Netherlands Foundation for Chemical Research (SON), with financial aid from the Netherlands Organization for the Advancement of Pure Research (ZWO) and by a grant from the National Science Foundation. Spectra were obtained at the 600 MHz NMR Facility for Biomedical Studies, Pittsburgh, Pennsylvania, supported by NIH Grant RR 00292. The authors are grateful to NATO for a Travel Grant (RG 486.82) which greatly facilitated their cooperation.
PY - 1985/11
Y1 - 1985/11
N2 - The vapor phase 2H NMR spectra of monodeuterobenzene and pentadeuterofluorobenzene were recorded at 14.1 T. Reduction of the collision time, and thus of the linewidth, was accomplished by compressing the gas to 10.8 atm with ethane. The molecules are aligned by the field of the spectrometer and, as a consequence, quadrupolar couplings are recorded. Differences from the liquid-phase spectra arise in some of the quadrupolar splittings as well as in the scalar D-F couplings. It is rationalized that the deviating quadrupolar interaction cannot be caused by interactions resulting from incomplete quenching of the rotation, but originates from environmental effects on the quadrupolar coupling in the liquid. The results agree with recent microwave experiments.
AB - The vapor phase 2H NMR spectra of monodeuterobenzene and pentadeuterofluorobenzene were recorded at 14.1 T. Reduction of the collision time, and thus of the linewidth, was accomplished by compressing the gas to 10.8 atm with ethane. The molecules are aligned by the field of the spectrometer and, as a consequence, quadrupolar couplings are recorded. Differences from the liquid-phase spectra arise in some of the quadrupolar splittings as well as in the scalar D-F couplings. It is rationalized that the deviating quadrupolar interaction cannot be caused by interactions resulting from incomplete quenching of the rotation, but originates from environmental effects on the quadrupolar coupling in the liquid. The results agree with recent microwave experiments.
UR - http://www.scopus.com/inward/record.url?scp=6244254795&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=6244254795&partnerID=8YFLogxK
U2 - 10.1016/0022-2364(85)90012-5
DO - 10.1016/0022-2364(85)90012-5
M3 - Article
AN - SCOPUS:6244254795
SN - 0022-2364
VL - 65
SP - 316
EP - 325
JO - Journal of Magnetic Resonance (1969)
JF - Journal of Magnetic Resonance (1969)
IS - 2
ER -