Louis Claude Cadet synthesized methyl arsenic compounds related to cacodyl. William Christopher Zeise made platinum-ethylene complex. Edward Frankland discovered dimethyl zinc. Ludwig Mond discovered Ni(CO). Victor Grignard worked with organomagnesium compounds. The abundant and diverse products from coal and petroleum led to Ziegler-Natta, Fischer-Tropsch, hydroformylation catalysis which employ CO, H, and alkenes as feedstocks and ligands.