Spin Photochemistry: Electron Spin Multiplicity as a Tool for Reactivity and Selectivity Control

Abstract

Spin chemistry involving small organic molecules without heavy atoms is highly sensitive to spin-orbit-coupling (SOC) modulating biradical conformation as well as hyperfine coupling (HFC) modulating magnetic isotope interactions. Several easily available reaction properties such as chemo-, regio-, and diastereoselectivity as well as quantum yields serve as analytical tools to follow intersystem crossing (ISC) dynamics and allow titrating spin selectivities.

Keywords

• cycloaddition
• magnetic isotope effect
• photochemistry
• selectivity
• spin