Crystal Structures of Zinc and Magnesium Benzene Sulphonates

Abstract

A recent note by A. Hargreaves¹, of the Physics Department, College of Technology, Manchester, summarized the information obtained from a projection, along the b-axis, of the electron density in the unit cell of zinc p-toluenesulphonate. An investigation of the structures of the closely related zinc and magnesium benzene sulphonates, begun by one of us (A. D. I. N.) at Manchester at the suggestion of Dr. Hargreaves and with his assistance, has now been completed in this Laboratory. The positions of all the atoms in the unit cells have been determined by Fourier syntheses of projections of the electron density along the b- and c-axes. The crystals used in this analysis were twinned across the face (100), with the consequence that reflexions (h00) of the twin components overlapped completely, (h05) reflexions were superposed, and there was partial overlap of reflexions (h04) and (h06). Some reduction in the accuracy of the b-axis projection results from the necessity for applying a correction to the observed intensities of these overlapping reflexions.