Crystal and molecular structure of phenylarsonic acid
The crystal structure of phenylarsonic acid was determined from two projections of the electron density.
The following bond lengths were found: As-C=1.97A, As=O=1.65Δ, As-O=1.75 A. The As atoms have a distorted tetrahedral valence configuration.
The molecular packing is determined by the stable hydrogen bonds -O-H...O= of length 2.48 and 2.53 A, uniting the molecules into endless columns.