Carbonyl-bridged and related compounds. Structural assignments by nuclear magnetic resonance spectroscopy

1967 ◽  
Vol 45 (11) ◽  
pp. 1201-1207 ◽  
Author(s):  
C. F. H. Allen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Spectral Data ◽  
Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectra ◽  
Related Compounds ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The spectral data, predominantly nuclear magnetic resonance spectra, of a number of carbonyl-bridged and related compounds have been examined. In most instances they confirm the structures arrived at by classical procedures, but in some instances revisions have been made.

scholarly journals An appraisal of homoeopathic quinquagenimillesimal potencies of plumbum metallicum and stannum metallicum by means of nuclear magnetic resonance spectroscopy

1999 ◽  
Author(s):  
◽  
Sean Michael Power
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The purpose of this study was to investigate the Nuclear Magnetic Resonance spectra of samples of LM6; LM14 and LM22 homoeopathic quinquagenimillesimal (LM) potencies of tin (Stannum metallicum), lead (Plumbum metallicum) and two lactose based controls: one control which is prepared by the means of potentisation and one control prepared without the means of potentisation. It was hypothesised that in terms of the effect of different substances (Stannum metallicum and Plumbum metallicum, and the lactose controls) and of different dilutions (LM6, LM14, LM22) of these substances that significant differences exist between the chemical shift and relative integration values of the CH3, CH2, OH and H20 signals of these homoeopathic substances.

Applications of Nuclear Magnetic Resonance Spectroscopy to Antibiotics. I. Specific Identification of Penicillins and Cephalosporins

1974 ◽  
Vol 57 (6) ◽  
pp. 1300-1313 ◽  
Author(s):  
William L Wilson ◽  
Hajro W Avdovich ◽  
David W Hughes
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Spectral Features ◽  
Specific Identification ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

Abstract The nuclear magnetic resonance spectra of various commercially available penicillins and cephalosporins are given. General spectral features, as well as specific resonances, are discussed and their application in the identification of these antibiotics is outlined.

Chemistry of the aminochromes. Part X. Some further observations on the reactions of aminochromes with thiols

1969 ◽  
Vol 47 (3) ◽  
pp. 467-476 ◽  
Author(s):  
W. Powell ◽  
R. A. Heacock ◽  
G. L. Mattok ◽  
D. L. Wilson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectra ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The reactions between aminochromes and thiols have been reinvestigated. In general aminochromes react with thiols to give mixtures of products including: 5,6-dihydroxyindoles; thio-substituted 5,6-dihydroxyindoles (the mercapto residue is now considered to be in the 4-position of the indole nucleus and not the 7-position as previously reported); and relatively unstable addition products formed between the aminochrome and the thiol. The mechanisms by which these compounds are formed are discussed. The characterization of three thio-substituted 5,6-dihydroxyindoles by nuclear magnetic resonance spectroscopy is described. The nuclear magnetic resonance spectra of a number of 5,6-diacetoxyindole derivatives are reported.

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