X‐Ray diffraction of oriented amylose fibers. I. Amylose dimethyl sulfoxide complex

The amylose–dimethyl sulfoxide complex has been investigated with the aid of x‐ray diagrams of oriented fibers. The amylose occurs in a six‐residue helix with alternate “up” and “down” chains packed in a square array, that is, pseudo‐tetragonal. A unit cell is proposed with a = b = 19.21 A. and c = 8.12 A.