Making some fresh, absolute tetrahydrofuran (THF) with benzophenone and sodium. The diphenylketyl-sodium has this beautiful deep blue color what only appears if no water, oxygen, CO2 or anything bad is left in the solution. This treatment is used for removing traces of water from the solution.
The benzophenone ketyl is an anion radical that contains a group Ph2C−O•. It is the product of the 1-electron reduction of a ketone.
9:30 pm  •  26 March 2020  •  188 notes  •  View comments