Crystal structure of propaquizafop

Abstract

The title compound, C22H22ClN3O5{systematic name: 2-(propan-2-ylideneaminooxy)ethyl (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionate}, is a herbicide. The asymmetric unit comprises two independent molecules in which the dihedral angles between the phenyl ring and the quinoxaline ring plane are 75.93 (7) and 82.77 (8)°. The crystal structure features C—H...O, C—H...N, and C—H...Cl hydrogen bonds, as well as weak π–π interactions [ring-centroid separation = 3.782 (2) and 3.5952 (19) Å], resulting in a three-dimensional architecture.