https://www.thevespiary.org/rhodium/Rhodium/pdf/thcsynth.procedure.pdf (https://www.thevespiary.org/rhodium/Rhodium/pdf/thcsynth.procedure.pdf)
https://www.thevespiary.org/rhodium/Rhodium/pdf/thcsynth.precursor.pdf (https://www.thevespiary.org/rhodium/Rhodium/pdf/thcsynth.precursor.pdf)