Polymeric Capsules and Honeycomb Aggregates Formed by p-Sulfonatocalixarene with Phenanthrolinium Compounds
journal contributionposted on 05.09.2007, 00:00 by Yu Liu, Qiang Li, Dong-Sheng Guo, Kun Chen
Two crystalline complexes were prepared by the inclusion complexation of p-sulfonatocalix arene (C6AS) with 1,10-phenanthrolinium (Phen+) (1) and 6,7-dihydro-5H- [1,4]diazepino[1,2,3,4-lmn] [1,10]phenanthroline-4,8-diium (PPQ2+) (2). p-Sulfonatocalix arene, in complex 1, maintains the conventional centrosymmetric “up-down” double partial cone conformation, whereas it assumes a novel unsymmetric up−down double partial cone conformation induced by PPQ2+ guest in complex 2. Furthermore, p-sulfonatocalix arene aggregates to the overall structure of multipillars in the presence of Phen+ guest and presents the honeycomb-type packing structure upon complexation with PPQ2+.