Decachloro-hexa-1,5-diene.
The title compound, C(6)Cl(10), cystallizes in a nearly C2-symmetrical gauche conformation. Both trichloro-vinyl groups are nearly planar [Cl-C-C-Cl torsion angles = -178.47 (12) and -179.93 (11)°] and the lengths of their C-Cl bonds increase from the terminal trans and cis C-Cl bonds to the inter-nal bonds. The Cl-C-Cl bond angles of the terminal dichloro-methyl-ene units are compressed to 111.75 (11) and 111.40 (11)°.
University Mainz, Duesbergweg 10-14, 55099 Mainz,  Germany.
Dieter
D
Schollmeyer
Heiner
H
Detert