6.

UV–vis–NIR absorption (top) and MCD (bottom) spectra of BF anions in THF solution at room temperature have a large number of features. Their π → π* transitions appear squarely in the NIR region.

UV–vis–NIR absorption (top) and MCD (bottom) spectra of BF anions in THF solution at room temperature have a large number of features. Their π → π* transitions appear squarely in the NIR region.