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.

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.

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.

Sign in / Sign up

Export Citation Format

Share Document