Crystal and molecular structure of cis-1,2-diacetonyl-1,2,3,3-tetra-chlorocyclopropane

Abstract

A three-dimensional X-ray structure determination of cis-1,2-diacetonyl-1,2,3,3-tetrachlorocyclopropane has been completed with diffractometer data. The crystals are monoclinic, space group P2₁/c, with lattice constants a= 13·458, b= 10·932, c= 9·417 Å, and β= 117° 12′. The structure was solved by analysis of the Patterson function and least-squares refinement gave R= 6·5% for 1150 reflections. The chain conformations are discussed in terms of non-bonded interactions and in relation to the observed cyclizations of some cis-disubstituted cyclopropanes.