A new crystal of O,Oˊ-dipropyl-α-(2,4-dichlorolphenoxyacylamido)-α-(4-methoxyphenyl) methylphosphonates has been prepared at room temperature and characterized by elemental analysis and IR,MS,1H NMR spectra,13C NMR spectra and X-ray single-crystal determination.The complex crystallizes in triclinic,space group P1 with a = 7.858(2),b = 12.621(4),c = 12.621(4),α = 96.17(3),β = 90.960(3),γ = 90.960(3)°,V = 1243.9(7)3,Dc = 1.346 Mg/m3,Z ...