Chains, Ladders, and Two-Dimensional Sheets with Halogen ... Halogen and Halogen ... Hydrogen Interactions

摘要

Intermolecular interactions have been traditionally classified by the nature of their energetic relationship: hydrogen-bonding, van der Waals interactions, charge-transfer forces, and others. Many of these, in turn, are based on models best defined bya particular atom ... atom potential. With the advent of supraniolecular chemistry, there has been an increasing focus on recognizing the structural patterns of interactions as driving forces to a particular aggregation state. As any crystal structure represents a balance of ferees, these structural patterns may be composed of one kind of intermolecular interaction, if a single interaction dominates the formation of patterns (for example hydrogen bonds), or may arise from a combination of different types of interactions. The term recently proposed for describing structural patterns is supramolecular syn-thon.