Chemistry's greatest unicorn hunt! Dinkleberg here is basically asking for a metalloorganic compound that doesn't oxidize, hydrolyze, or kill you. That's like asking for a chocolate cake that doesn't have calories, taste like chocolate, or make you happy. The empty display case in the second panel is chemistry's way of saying "good luck with that fantasy, buddy." Most metalloorganic compounds are either pyrophoric (spontaneously combust in air), decompose in water, or will happily rearrange your DNA given half a chance. The chemists in the audience are collectively facepalming right now.