Chemical reactivity in confined systems : theory modelling and applications This book provides a theoretical basis for the molecular phenomena observed in confined spaces. State of the art theoretical and computational approaches are described with a focus on obtaining physically relevant understanding enabling the reader to build a good appreciation of the underlying chemical principles. aÌ²²́ƠË₋Real life examples of confined systems are presented highlighting how the reactivity of atoms and molecules changes upon encapsulation. Recent developments related to the following host guest systems are discussed. *AÌ² Cucurbit[n]uril *AÌ² ExBox 4 *AÌ² Clathrate hydrates *AÌ² Octa acid cavitand *AÌ² Metal organic frameworks (MOFs) *AÌ² Covalent organic frameworks (COFs) *AÌ² Zeolites *AÌ² Fullerenes *AÌ² Carbon nanotubes.