Evolution of Br⋯Br contacts in enantioselective molecular recognition during chiral 2D crystallization.

ABSTRACT: Halogen-mediated interactions play an important role in molecular recognition and crystallization in many chemical and biological systems, whereas their effect on homochiral versus heterochiral recognition and crystallization has rarely been explored. Here we demonstrate the evolution of Br⋯Br contacts in chiral recognition during 2D crystallization. On Ag(100), type I contacts prevail at low coverage and lead to homochiral recognition and the formation of 2D conglomerates; whereas type II contacts mediating heterochiral recognition are suppressed at medium coverage and appear in the racemates induced by structural transitions at high coverage. On Ag(111), type I contacts dominate the 2D crystallization and generate 2D conglomerates exclusively. DFT calculations suggest that the energy dif

SUBMITTER: Yi ZY 

PROVIDER: S-EPMC9532412 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature