α-D-Glucose: Precise Determination of Crystal and Molecular Structure by Neutron-Diffraction Analysis

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This analysis provides the first precise crystal and molecular structural parameters for α-D-glucose. The C—C, C—H, and O—H bond lengths deviate only slightly from their means of 1.523 Å, 1.098 Å, and 0.968 Å. The C(1)—O(1) bond length, 1.389 Å, is significantly shorter than the mean value, 1.420 Å, of the other C—O bonds. The valence angle of the ring oxygen is 113.8 degrees.