The Molecular Structures of Thiele's and Chichibabin's ... Lawrence K. Montgomery,* John C. Huffman, Edward A. Jurczak, and Martin P. Grendze ... Contribution from the Department of Chemistry, Indiana University, Bloomington. Indiana 47405. Received February 24, 1986 ... Abstract: Low temperature (-160 “C), inert atmosphere X-ray crystal structures have been obtained for Thiele's (a,a,- &,a'-tetraphenyl-p-xylylene, 3,6-bis(diphenylmethylene)- 1, ...