Hydrogen Atom Thermal Parameters

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Science  11 Sep 1964:
Vol. 145, Issue 3637, pp. 1185-1187
DOI: 10.1126/science.145.3637.1185


Isotropic hydrogen atom thermal parameters for N,N'- hexamethylenebispropionamide have been determined. They show a definite trend and vary from approximately the same as the mean thermal parameters for atoms other than hydrogen near the center of the molecule to appreciably greater for atoms near the end. The indicated trend for this compound, along with other results, provides the basis for a possible explanation of the anomolous values that have been obtained for hydrogen atom thermal parameters.