Crystal structure, proton magnetic resonance spectra, and conformational analysis of 1,4-diphenyl-1,4-dithiabutane 1,4-dioxides and related Meso/dl and Erythro/Threo systems

1978 ◽  
Vol 43 (15) ◽  
pp. 3024-3031 ◽  
Author(s):  
Andrew L. Ternay ◽  
Johnny Lin ◽  
Thomas Sutliff ◽  
Shirley S. C. Chu ◽  
Beingtau Chung
Keyword(s):  
Crystal Structure ◽  
Magnetic Resonance ◽  
Conformational Analysis ◽  
Proton Magnetic Resonance ◽  
Magnetic Resonance Spectra

Conformational analysis of coordination compounds. VI. P.M.R. study of diamagnetic five-membered diamine chelate rings

1976 ◽  
Vol 29 (1) ◽  
pp. 33 ◽  
Author(s):  
CJ Hawkins ◽  
RM Peachey
Keyword(s):  
Magnetic Resonance ◽  
Conformational Analysis ◽  
Coordination Compounds ◽  
Proton Magnetic Resonance ◽  
Equatorial Orientation ◽  
Coupling Constant ◽  
Butyl Group ◽  
Magnetic Resonance Spectra ◽  
Chelate Rings

The proton magnetic resonance spectra of a number of coba1t(111), molybdenum(0), chromium(0), platinum(11) and palladium(11) complexes of (R)-propane-1,2-diamine, (S)-3,3-dimethylbutane-1,2- diamine, (RS)-N,N,N',N?-tetramethylpropane-1,2-dime and ethane-1,2-diamine have been analysed and the coupling constant data utilized to calculate the conformational populations for the various complexes. Necessary parameters for the conformational analysis were obtained from a study of tetracyano{(S)-3,3-dimethylbutane-1,2-diamine)cobaltate(111),in which the t-butyl group was assumed to be exclusively in the equatorial orientation. The preparation and resolution of this t-butyl substituted ethane-1,2-diamine are described.

The preparation of 2-Fluoro-5-nitrobenzonitrile and the proton magnetic resonance spectra of some compounds containing the N-(2-Cyano-4-nitrophenyl) group

1967 ◽  
Vol 20 (8) ◽  
pp. 1663 ◽  
Author(s):  
JFK Wilshire
Keyword(s):  
Amino Acids ◽  
Magnetic Resonance ◽  
Nitro Group ◽  
Proton Magnetic Resonance ◽  
Cyano Group ◽  
Aromatic Nucleus ◽  
Heteroaromatic Compounds ◽  
Magnetic Resonance Spectra

2-Fluoro-5-nitrobenzonitrile, an analogue of 1-fluoro-2,4- dinitrobenzene, in which the 2-nitro group has been replaced by a cyano group, has been prepared and made to react with several amines, amino acids, and NH-heteroaromatic compounds. The proton magnetic resonance spectra of some of the resultant N-(2-cyano-4-nitrophenyl) derivatives were compared with the spectra of the corresponding N-(2,4- dinitrophenyl) derivatives and furnish further evidence that the ortho nitro group of the latter derivatives is rotated out of the plane of the aromatic nucleus.

Sign in / Sign up

Export Citation Format

Share Document