ChemInform Abstract: PROTON MAGNETIC RESONANCE STUDIES OF COMPOUNDS WITH BRIDGEHEAD NITROGEN ATOMS PART 25, THE STEREOCHEMISTRY AND (1)H NUCLEAR MAGNETIC RESONANCE SPECTRA OF SOME PERHYDRO-OXAZOLO(3,4-C)OXAZINES AND PERHYDRO(1,3)OXAZINO(3,4-C)(1,3)OXAZINE

1973 ◽  
Vol 4 (44) ◽  
pp. no-no
Author(s):  
TREVOR A. CRABB ◽  
M. JAMES HALL
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Magnetic Resonance Studies ◽  
Nuclear Magnetic Resonance Spectra ◽  
Bridgehead Nitrogen ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

Application of Paramagnetic Shift Reagents in Nuclear Magnetic Resonance Studies of Complex Alcohols and Amines

1971 ◽  
Vol 49 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Elaine Gillies ◽  
W. A. Szarek ◽  
M. C. Baird
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Ethyl Acetoacetate ◽  
Paramagnetic Shift ◽  
Magnetic Resonance Studies ◽  
Nuclear Magnetic Resonance Spectra ◽  
Shift Reagents ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The effects of Co(acetylacetonate)2, Ni(acetylacetonate)2, and Cu(ethyl acetoacetate)2 on the nuclear magnetic resonance spectra of a variety of alcohols and amines have been studied. Changes are produced in the spectra, which are useful for assigning the signals.

Fluorine magnetic resonance studies. III. Fluorine-fluorine coupling over six and seven bonds in fluorostyrenes

1977 ◽  
Vol 30 (3) ◽  
pp. 543 ◽  
Author(s):  
DA Burgess ◽  
ID Rae ◽  
JD Snell
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Aromatic Ring ◽  
Long Range ◽  
Magnetic Resonance Studies ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The 19F nuclear magnetic resonance spectra of β,β-difluorostyrenes and 1-difluoromethyleneindans bearing fluorine substituents in the aromatic ring have been recorded and the long-range couplings 6JF,F and 7JF,F are discussed. In each compound the larger couplings are to the olefinic fluorine trans to the aromatic ring. The couplings are maximum in the planar indans, reducing to unobservable values when non-planarity is achieved in suitably substituted styrenes. The allylic coupling 4JH,F involving olefinic fluorines shows only slight stereochemical dependence.

THE ANALYSIS OF NUCLEAR MAGNETIC RESONANCE SPECTRA: IV. FOUR NUCLEI: AB3

1958 ◽  
Vol 36 (9) ◽  
pp. 1302-1307 ◽  
Author(s):  
R. J. Abraham ◽  
J. A. Pople ◽  
H. J. Bernstein
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Resonance Spectrum ◽  
Proton Magnetic Resonance Spectrum ◽  
Methyl Mercaptan ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The proton magnetic resonance spectrum of methyl mercaptan has been analyzed on the basis of the nuclear grouping AB3. The spectrum calculated for [Formula: see text] agrees very well with that observed.

Nuclear Magnetic Resonance Studies of Substituted Cyclic Ureas

1970 ◽  
Vol 24 (2) ◽  
pp. 272-276 ◽  
Author(s):  
D. M. Soignet ◽  
G. J. Boudreaux ◽  
R. J. Berni ◽  
E. J. Gonzales
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Magnetic Resonance Studies ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The proton magnetic resonance spectra of selected substituted cyclic ethyleneureas and cyclic propyleneureas have been studied. The spectral effects produced by substitution on the parent ring compound are discussed.

Infrared and Nuclear Magnetic Resonance Studies of Microstructures of Polychloroprenes

1965 ◽  
Vol 38 (3) ◽  
pp. 532-538 ◽  
Author(s):  
Raymond C. Ferguson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Magnetic Resonance Studies ◽  
Nuclear Magnetic Resonance Spectra ◽  
High Resolution Nmr ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

Abstract High resolution infrared and nuclear magnetic resonance spectra confirm the structure of cis-polychloroprene prepared by a stereospecific route. Head-to-tail, head-to-head, and tail-to-tail sequence isomerism in both as- and trans-polychloroprenes has been discovered and measured quantitatively by high resolution NMR spectroscopy. The irregularity in the microstructure of neoprenes proves to be more extensive than was previously suspected.

Sign in / Sign up

Export Citation Format

Share Document