Carlson, Brenden; Kaminsky, Werner; Tong, Linyue; Phelan, Gregory D. published their research in Journal of Chemical Crystallography on December 31 ,2015. The article was titled 《Structure and Phase Transition of 4,7-Bis-(4′-cyano-biphenyl-4-yl)-[1,10]phenanthroline》.Reference of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline The article contains the following contents:
4,7-Bis-(4′-cyano-biphenyl-4-yl)-[1,10]phenanthroline (cnbiphphen) is synthesized from a palladium mediated coupling between 4-cyanobenzene boronic acid and 4,7-bis(4-bromophenyl)-[1,10]phenanthroline. The single crystal X-ray structure was measured at both 298(2) K and 90(2) K. The asym. unit of the title compound in the low-temperature phase, C38H22N4·HCCl3, is comprised of one cnbiphphen mol. and one chloroform solvent mol. Addnl. symmetry relates one-half of the title compound to the other at room temperature During cooling the structure experiences a reversible phase transition from A 2/a (different setting of C 2/c, with a and c exchanged to match lattice parameters of both phases) to P 21/c. The crystal packing of the title compound consists primarily of electronic charge interactions between the cyano moieties. The chloroform solvent mol-ecule is situated in a cavity between two phenanthroline systems and is associated to two nitrogen atoms of cnbiphphen mols. through Cl3C-H···Nphen van der Waals interaction.4,7-Bis(4-bromophenyl)-1,10-phenanthroline(cas: 97802-08-9Reference of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline) was used in this study.
4,7-Bis(4-bromophenyl)-1,10-phenanthroline(cas: 97802-08-9) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool. Reference of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary