Others have suggested that "severe molecular twisting to relieve steric interactions of 'ortho' chlorines may preclude any stable existence [for perchlorotriphenylene]." In fact, although it is difficult to prepare, this highly distorted chlorocarbon is perfectly stable under ordinary conditions. For a brief communication describing its synthesis and X-ray structure, see "Perchlorotriphenylene." K. Shibata, A. A. Kulkarni, D. M. Ho, and R. A. Pascal, Jr., J. Am. Chem. Soc. 1994, 116, 5983-5984.