@PatrickGundlach Problem is, it doesn't move the box to the next line when it needs to
Compound [Dimer]: \mbox{\SI{1.2}{\mL} (1.92 mmol, 1.1 eq.)} of \SI{1.6}{\Molar} \textit{n}-butyllithium was added to \mbox{\SI{0.247}{\gram} (1.71~mmol, 1~eq.)} of phenylimidazole at \SI{-78}{\degreeCelsius}, under nitrogen atmosphere over a period of 15~minutes.
gives me one giant line, not two lines that don't break at certain points
Sorry, it breaks AFTER The long box, not before as it should