Hydrogen bonding in substituted nitroanilines: Hydrogen-bonded sheets in 4-iodo-3-nitroaniline

Abstract

In the title compound, C6H5IN2O 2, the nitro group is disordered over two sets of sites, each with 0.5 occupancy, and the amino N atom is pyramidal. The molecules are linked into sheets by a combination of three-centre N-H⋯(O)2 hydrogen bonds involving alternative pairs of O-atom sites and two-centre N-H⋯N hydrogen bonds involving the pyramidal amino group.