105 research outputs found
Vibrational spectra and normal coordinate analysis of lithium pyruvate monohydrate and its isotopic compounds
IR and Raman spectra of lithium pyruvate monohydrate and its O- and C-deuterated and 13C- and 18O-substituted compounds have been recorded in the solid state, and the observed bands have been assigned by using the isotope effects and the normal coordinate calculations based on the gem-diol structure (lithium 2,2-dihydroxypropionate). The refined force constants have well reproduced the observed frequencies and the 13C- and 18O-shifts. These results support the structures of these compounds discussed by many authors. The potential energy distributions show that many vibrational modes are very complicated except for the well-known group vibrations. The additive property of the isotopic frequency shifts has also been discussed
<Abstract of published report>Vibrational and NMR Spectra of Phenylpyruvic Acid and Its Salts in Aqueous Solution.
<Abstract of published report>Vibrational spectra of β-lactams-III. : Potassium 2-azetidinone-1-sulfonate and its isotopic compounds.
<Abstract of annual report>Vibrational Spectra of β-Lactams : II. 1-Methyl-2-azetidinone and Its Deuterated Compounds.
<Abstract of published report>Structure of 3-Phenyl-2-thiopyruvic Acid as Studies by FT-IR, FT-Raman, and NMR Spectroscopies.
<Abstract of annual report>Keto-Enol Tautomerism and Vibrational Spectra of Phenylpyruvic Acids.
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