Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Steve Cheatham"'
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 346:401-410
Photo-degradation of [ 14 C]-thifensulfuron methyl has been investigated in aqueous media using a light source which simulates sunlight. Degradation of thifensulfuron methyl proceeds predominantly via sulfonylurea bridge ipso-contraction, and via cle
Publikováno v:
Magnetic Resonance in Chemistry. 53:363-368
In this paper, we detail the results of 1H–15N correlation data obtained via 13C–15N coupling at natural abundance on a number of classes of azoles including pyrazoles, imidazoles and triazoles. The experiment produces data that is highly complem
Publikováno v:
Magnetic Resonance in Chemistry. 55:154-156
Measurement of 1 H-15 N and 13 C-15 N coupling constants at natural abundance is demonstrated to be a reliable and generic method to determine the configuration of oximes, hydrazines, and related systems. Data on 1 H-15 N and 13 C-15 N coupling const
Publikováno v:
Magnetic resonance in chemistry : MRC. 55(2)
Measurement of
Autor:
Kirill A. Blinov, Steve Cheatham, Mikhail E. Elyashberg, Ryan R. Sasaki, Sergey G. Molodtsov, Michael Kline
Publikováno v:
Magnetic Resonance in Chemistry. 48:571-574
The availability of cryogenically cooled probes permits routine acquisition of data from low sensitivity pulse sequences such as inadequate and 1,1-adequate. We demonstrate that the use of cryo-probe generated 1,1-adequate data in conjunction with HM
Autor:
Steve Cheatham, Michael Kline
Publikováno v:
Magnetic Resonance in Chemistry. 41:307-314
An examination of a variety of common nitrogen-containing systems was undertaken to optimize parameters for observation of 1H–15N long-range correlations. Because of the diversity of coupling constants encountered with 1H–15N correlations, a modi
Autor:
Steve Cheatham
Publikováno v:
Journal of Fluorine Chemistry. 140:104-106
Decoupling 19 F during data acquisition is extensively used to simplify proton spectral interpretation of fluorinated compounds. Decoupling applied during the acquisition time (t2) of a 2D experiment, however, only produces partially decoupled spectr
Publikováno v:
Magnetic resonance in chemistry : MRC. 53(5)
In this paper, we detail the results of (1)H-(15)N correlation data obtained via (13)C-(15)N coupling at natural abundance on a number of classes of azoles including pyrazoles, imidazoles and triazoles. The experiment produces data that is highly com
Publikováno v:
Journal of magnetic resonance (San Diego, Calif. : 1997). 247
We propose a pulse sequence, HCNMBC for multiple-bond H–(C)–N correlation experiments via one-bond 1 J (C,H) and one- or multiple bond n J (N,C) coupling constants (typically n = 1–3) at the natural isotopic abundance. A new adiabatic refocussi
Publikováno v:
Magnetic Resonance in Chemistry. 45:378-380
Two-dimensional NMR spectra correlating both (1)H and (19)F nuclei with either (13)C or (15)N, are recorded at the same time, using a 600-MHz broadband radio frequency probe feeding independent (1)H and (19)F receiver channels. This technique, known