Anion receptors based on organic frameworks: highlights from 2005 and 2006

This critical review covers advances in anion complexation chemistry related to receptors based on organic frameworks in the years 2005 - 2006. The review covers anion receptors that employ amides and thioamides, pyrroles and indoles, ureas and thioureas, ammonium, guanidinium, imidazolium, and receptors containing hydroxyl groups. There is a discussion of anion templated assembly, followed by a short section outlining modelling studies of these systems.