The Raman Spectra of the Sugars in the Solid State and in Solution I. The Raman Spectra of α- and β-d-Glucose

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Abstract
This paper presents data on the Raman spectra of anhydrous crystalline α‐ and β‐d‐glucose and of equilibrium aqueous d‐glucose solutions containing 5, 15, and 50 moles of water per mole of glucose. Ultraviolet excitation (Hg λ2537A) was employed. A technique for photographing Raman spectra of crystalline organic powders and solutions with very poor scattering power is described. It consisted essentially of the use of complementary filters of aqueous succinic acid (saturated, 4 mm thick) and a mercury vapor absorption cell (10 cm long, 150°C). Thirty‐six lines are reported for α‐d‐glucose, 32 for the β, and numerous new bands including measurements of maxima and shoulders are given for equilibrium solutions. Only the obvious experimental differences are discussed as the detailed discussion will be given in a later paper of this series.

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