Insecticides. VI. Crystal structure of methoxychlor [1,1,1-Trichloro-2,2-bis(p-methoxyphenyl)ethane]

Abstract

The crystal structure of methoxychlor was determined by the symbolic addition procedure from three-dimensional diffractometer data with 1507 reflections. The unit cell is triclinic, a = 1221.4(4), b = 1069.2(3), c = 636.2(2) pm; α ( = 100.60(2)º, β = 84.49(2)º and γ = 98.26(2)º with Z = 2. Least-squares refinement reduced the residual R to 0.048. Molecular dimensions are of the same order as those found in p,p'-DDT except that the angle between the normals to the benzene planes (77.7 º) is greater than in p,p?-DDT (64.9º).