title: Dual application of (aqua)(chlorido)(porphyrinato)chromium(III) as hypersensitive amine-triggered ON switch and for dioxygen activation.
abstract: Although synthesis and substitution reactions of chlorido chromium(III) porphyrins Cr(III)(TPP)(Cl)(L) (H2TPP = 5,10,15,20-tetraphenyl porphyrin, L = pyridine, H2O, ROH, etc.), have been well-established in coordination chemistry for decades, an unexpected dichotomous reactivity of Cr(III)(TPP)(Cl)(H2O) (1) toward amines is disclosed here. This reactivity leads to the application of 1 as highly sensitive substoichiometric and irreversible ON switch for amine detection by an autocatalytic pathway. The concomitant activation of O2 by the 1/amine system is furthermore exploited in an electrochemically driven epoxidation of norbonene using O2 as initial oxidant.
authors.affiliation: Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University of Mainz , D-55128 Mainz, Germany.
authors.forename: Philip
authors.initials: P
authors.lastname: Heier
authors.forename: Nicolas D
authors.initials: ND
authors.lastname: Boscher
authors.forename: Patrick
authors.initials: P
authors.lastname: Choquet
authors.forename: Katja
authors.initials: K
authors.lastname: Heinze