Molecular Crystals and Liquid Crystals, Vol.625, No.1, 186-194, 2016
Synthesis and supramolecular interactions involved in the crystal structure of (2,4,10,12-tetrabromo-6,7,14,15-tetrahydro-6, 14-thiacycloocta[1,2-b:5,6-b']diquinoline)(2)center dot(1,1,2,2-tetrachloroethane)inclusioncompound
The tetrahalo aryl inclusion host 2,4,10,12-tetrabromo-6,7,14,15-tetrahydro-6,14-thiacycloocta[1,2-b:5,6-b']diquinoline 3 was re-synthesized to explore its ability to trap toxic polychlorinated hydrocarbons such as 1,1,2,2-tetrachloroethane (TCE) in the form of host-guest compound. Host 3 crystallizes from a fresh sample of TCE to form an inclusion compound of the formula (3)(2)center dot(TCE) in triclinic system, space group P-1, with a = 7.7732(16) angstrom, b = 10.739(2) angstrom, c = 14.816(3) angstrom, alpha = 97.329(4)degrees, beta = 98.619(4)degrees, gamma = 103.359(4)degrees, V = 1172.7(4) angstrom(3), and Z = 2. The X-ray crystal structure of the (3)(2)center dot(1,1,2,2-TCE) is described and analyzed in terms of crystal engineering and supramolecular chemistry. The hosts assemble by means of different types of packing motifs. The included TCE molecules are enclosed within host molecular pens. Novel halogen center dot center dot center dot halogen intermolecular interactions as well as other non-covalent intermolecular interactions involved in the crystal structure are presented and proved to play an important role in linking these host-host, host-guest, and guest-guest building blocks.