High resolution nuclear magnetic resonance spectra of hydrogen fluoride in solution and in bihalide ions. Nuclear spin coupling in strong hydrogen bonds

1974 ◽  
Vol 96 (25) ◽  
pp. 7632-7637 ◽  
Author(s):  
John S. Martin ◽  
Fred Y. Fujiwara
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Hydrogen Bonds ◽  
Hydrogen Fluoride ◽  
Nuclear Spin ◽  
Spin Coupling ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

High Resolution Nuclear Magnetic Resonance Spectra of Bifluoride Ion and its Homologues

1971 ◽  
Vol 49 (18) ◽  
pp. 3071-3073 ◽  
Author(s):  
John S. Martin ◽  
Fred Y. Fujiwara
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Spin Coupling ◽  
Aprotic Solvents ◽  
Related Molecule ◽  
Nuclear Magnetic Resonance Spectra ◽  
Spin Spin Coupling ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The high resolution 1H and 19F nuclear magnetic resonance (n.m.r.) spectra of the four bihalide ions have been observed in aprotic solvents. The 1H shielding is, in every case, 14 p.p.m. less than that in the related molecule. The spin–spin coupling in FHF− is 120.5 ± 0.3 Hz.

9,10-DIMETHYL- AND 9,10-DIPHENYL-9,10-DIHYDRO-9,10-ETHANO-ANTHRACENE BY FRIEDEL–CRAFTS CYCLIALKYLATIONS OF 1,4-DIARYLSUBSTITUTED-1,4-DIOLS

1965 ◽  
Vol 43 (6) ◽  
pp. 1754-1760 ◽  
Author(s):  
L. R. C. Barclay ◽  
Ralph A. Chapman
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Hydrogen Fluoride ◽  
Aluminium Chloride ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The 1,4-diols, 2,5-diphenylhexane-2,5-diol (Ia), and 1,1,4,4-tetraphenylbutane-1,4-diol (Ib) were found to undergo intramolecular cyclodehydrations and dehydration yielding 9,10-disubstituted-9,10-dihydro-9,10-ethanoanthracenes, 2,2,5,5-tetrasubstituted-tetrahydrofurans, and 1,1,4,4-tetrasubstituted-1,3-butadienes when treated with hydrogen fluoride or aluminium chloride. No evidence could be found for intermolecular cyclialkylations of added aromatics such as benzene, anisole, or veratrole. Nuclear magnetic resonance spectra of the products are discussed.

High-resolution nuclear-magnetic-resonance spectra of hydrocarbon groupings - V. ABCX spectra of vinyl fluoride and 3-methylbut-l-ene

1961 ◽  
Vol 263 (1312) ◽  
pp. 136-148 ◽  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Coupling Constants ◽  
Vinyl Fluoride ◽  
General Properties ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

Some general properties of ABCX -type spectra are discussed. It is shown that it is possible to deduce from such spectra the relative signs of all inter-nuclear coupling constants. Analyses are presented of the hydrogen (proton) spectra from the vinyl groups of vinyl fluoride and 3-methylbut-l-ene, and of the fluorine spectrum of the former molecule. It is shown that all HF coupling constants in vinyl fluoride are of the same sign as the cis and trans HH coupling constants.

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