A Lewis Acidic, -Conjugated Stibaindole with a Colorimetric Response to Anion Binding at Sb(III) Academic Article uri icon


  • 2017 American Chemical Society. We describe 1-chloro-2,3-diphenylstibaindole (1-Cl), a Sb(III) heterocycle which exhibits visible-wavelength absorption due to conjugation of the (Sb-Cl) orbital with the system of the conjugated backbone. Because the (Sb-Cl) orbital is accessible, stibaindole 1-Cl is a Lewis acid that readily binds halide anions at the site opposite the Sb-Cl bond. This binding induces a "turn-off" colorimetric response due to the suppression of the - conjugation in the anion-bound form.

published proceedings

  • Organometallics

author list (cited authors)

  • Christianson, A. M., & Gabba, F. P.

citation count

  • 33

complete list of authors

  • Christianson, Anna M||Gabbaï, François P

publication date

  • August 2017