Crystalline-State Photoreactions Direct Observation of Reaction Processes and Metastable Intermediates

Crystalline-State Photoreactions Direct Observation of Reaction Processes and Metastable Intermediates 

Abstract S ince the topochemical postulate was proposed in the solid-state reactions by Schmidt et al. based on the X-ray crystal structure analyses of related compounds, a variety of organic solid-state reactions have been studied analyzing the crystal structures of the reactant molecules in these 50 years. The postulate has been a powerful tool to understand the reaction mechanism at a rough estimate. 

Keywords Reaction mechanism Solid-state reaction Topochemical posmlate 

Ohashi, Crystalline State Photoreactions Direct Observation of Reaction Processes and MetastaMe Intermediates, DOI 10.1007/978-4-43l-54373-2 l, Springer Japan 2014 

Reactions in molecular crystals are divided into four types photo-induced, thermal, gas-solid, and sohd-solid reactions. Most reactions in the sohd state are regioselective and stereoselective because the reactions usually proceed topochemi-cally. A variety of regio- and stereoselective reactions in the solid state have been reviewed [3-18], 

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