ISSN:
1573-9171
Keywords:
derivatives of thiodipropionic acid
;
2-(acylaminoethyl) sulfides
;
derivatives of β,β′-sulfinyldipropionic acid
;
2-(acylaminoethyl) sulfoxides
;
x-ray structural analysis
;
bis(2-trifluoroacetylaminoethyl) sulfide
;
molecular structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Bifunctional sulfides and sulfoxides containing carboxy, carbamoyl, or acylamino groups in the β-position are synthesized, and their IR spectra were studied. An unusual decrease in the frequencies of the carbonyl vibrations (by 20–34 cm−1) was found for thiodipropionic acid, its amides, and bis(β-acylaminoethyl) sulfides by comparison with the corresponding sulfoxides. The low-frequency shift of the CO band in these carbonylsulfides was not, as expected, associated with the intramolecular S...O coordination, since the x-ray structural investigation of thiodipropionic acid and bis(2-trifluoroacetylaminoethyl) sulfide did not show short intra- and intermolecular contacts involving the sulfur atom. Both structures contain intermolecular hydrogen bonds (C=O...HO or C=O...HN).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00864333
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