activation energies of various hydridetransferreactions was developed according to transition state theory using the Morse-type free energy curves of hydride donors to release a hydride anion and hydrideacceptors to capture a hydride anion and by which the activation energies of 187 typical hydride self-exchange reactions and more than thirty thousand hydride cross transferreactions in acetonitrile were
Hydrochromism of thioxanthylium cations/ thioxanthene-9-ol can be tuned by structural functionalization to offer diverse colors and moisture-sensitivities. This reversible hydrochromic system is easily activated with organic acid from chemically stable precursors, allowing for possible uses in moisture-sensing and anti-counterfeiting encryption.