The absolute configuration of sodium chlorate

Abstract

Measurements are reported of the Bijvoet inequality (difference in intensity between the reflections hkl and ~h~k~l) for a no. of reflections in the [011̅] zone of NaClO3. Cu K$α$ radiation was used, and the Bijvoet inequality produced by the small anomalous dispersion of Cl atoms for this wave length was accurately measured with a Geiger-counter spectrometer. The abs. configuration of an optically dextrorotatory crystal was found to be described by the following parameters x, y, z with the at. positions 12(b) of the International Tables for the space group P213 referred to a right-handed system of coördinates: 4 Na 0.064, 0.064, 0.064; 4 Cl 0.417, 0.417, 0.417; 12 O 0.303, 0.592, 0.500. The abs. configuration detd. agreed with that deduced from the theoretical calcn. of its optical activity made by R. (C.A. 45, 8835f). [on SciFinder(R)]