Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 12, Issue 35, Pages 10230-10234Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c003649h
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We investigated the Fourier transform microwave spectra of the hydrated forms of N-methylformamide (NMF) in a supersonic expansion and assigned the rotational spectra of two mono-hydrated species. The conformation of each molecular complex was reliably determined on the basis of the values of the rotational constants, of the relative intensities of mu(a)- and mu(b)-type transitions, and of the features of the (14)N quadrupole hyperfine structure of the rotational transitions. In both complexes water acts as a proton donor and NMF has a trans configuration of the peptidic group. In the most stable of these conformers, water is also weakly bound to the methyl group.
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