Three-figure Cosine Factors for Fourier Analysis and Synthesis. Part I: A Modified Stencil Method

The crystal structure of hexamethylenediamine

“…Absolute measurements were not carried out, the scale being obtained by correlation with the values finally calculated from the atomic positions found. The Fourier syntheses were carried out by threefigure numerical methods (Robertson, 1948). For the projection along the b axis the electron density was computed at 900 points on the asymmetric unit, the axial subdivisions being a/60 = 0.116 A. and c/120 = 0.160 A.…”