Observations on dislocations in tetraphenyltin and its isomorphs

Abstract

Examination of the characteristic pits produced by etching natural and mechanically damaged crystal surfaces shows that these are formed at the ends of dislocation arrays. Etch-pit shape, symmetry, and patterned arrays indicate that tetraphenyltin is a plastic, organometallic crystal with dislocation glide in {110} planes. The [001] direction is the most likely slip direction and the direction of the Burgers vector.