Acaricides. Part I. Crystal structure of Pentac [synclinal 1,1′,2,2′,3,3′,4,4′,5,5′-decachloro-1,1′-bis(cyclopenta-2,4-dienyl)]

Abstract

The crystal structure of Pentac has been determined by the symbolic addition procedure from 1 543 reflections collected on a diffractometer. Crystals are monoclinic, space group P2₁/c, with Z= 4 in a unit cell of dimensions: a= 854.9(1), b= 1127.9(2), c= 1843.7(4) pm, β= 113.38(2)°. The structure was refined by least-squares to R 0.075. In the molecule the chlorine atoms connected at the 1-positions in the planar cyclopentadiene rings are mutually synclinal. The angle between the normals to these rings is 61.9°.