https://www.thevespiary.org/rhodium/Rhodium/chemistry/mexamine.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/mexamine.html)
https://www.thevespiary.org/rhodium/Rhodium/chemistry/dmtsyn.txt (https://www.thevespiary.org/rhodium/Rhodium/chemistry/dmtsyn.txt)