Single-crystal-to-single-crystal Transformations for the Preparation of Small Molecules, 1D and 2D Polymers Single Crystals

The single-crystal-to-single-crystal (SCSC) transformation is a fascinating and valuable outcome of topochemical reactions. Not like the solution-state reactions, movement molecule in single-crystal state such mysterious attractive research topic. molecular packing monomers prior to reaction could provide many possibilities for formation complicated topological structures. further or polymerization single crystal realize preparation covalent In this review, we summarized six different types organic reactions that SCSC conversion, namely [2 + 2], [4 4], 2] photo-cycloaddition, dienes polymerization, acetylenes azide-alkyne cycloaddition. crystalline phases offer possibility significant advances structure design. Some examples 1D 2D polymer crystals realized by were subsequently. Organic conversion summarized, including polyynes construction polymers transformations was introduced soon afterward, followed perspective about area.