Abstract

Spectroscopic identification of pyridine compounds isolated from complex substances such as shale oil is greatly aided by NMR chemical-shift data on the pyridine-ring protons. Chemical shifts of the ring protons in CCl₄ and C₆H₆ solution and the differential shift of the protons in these two solvents are reported. A paramagnetic shift is observed in the directional character of the proton alpha to the nitrogen in the pyridine ring. These data are used to determine structural information from the spectrum of a mixture of pyridine homologs.

Petrophysical applications of NMR imaging

William P. Rothwell and H. J. Vinegar
Appl. Opt. 24(23) 3969-3972 (1985)

Narrowband chemical-shift imaging

Ephraim Feig and Fred Greenleaf
Appl. Opt. 24(23) 3977-3984 (1985)

Transformed world of industrial infrared analysis

Jeanette G. Grasselli and Lynn E. Wolfram
Appl. Opt. 17(9) 1386-1399 (1978)

Isotope Shifts in the Spectra of Dy i and Er i†

John S. Ross
J. Opt. Soc. Am. 62(4) 548-554 (1972)

Anomalous side-shifted multimode spectra in proton-exchanged LiNbO₃ waveguides

M. De Micheli and Philip St. J. Russell
Appl. Opt. 25(21) 3896-3898 (1986)