Starting materials: Solid CsBr, BiBr, 9-M HBr, Solid AgBr
Product: orange powder
Description: First, solid CsBr (0.426 g, 2.00 mmol) and BiBr (0.449 g, 1.00 mmol) were dissolved in 10 mL of 9-M HBr. Afterward, solid AgBr (0.188 g, 1.00 mmol) was added to the mixture. The vial was then capped, heated to 110ยบ C for 2 hours, and cooled to room temperature. As a result, an orange-powder precipitate formed and was filtered on a glass frit and dried under low pressure overnight.
Method: UV-vis absorption
Description: Cary 6000i UV-Vis spectrometer equipped with an integrating sphere was used in absorbance mode to collect absorption data. The powder was pressed and mounted on a quartz slide such that incident light was normal to the surface.