[chemical substances] Count: 378c;28s reactive intermediates Count: 74c;14s Class cations [X+] Count: 21c;13s Class onium compounds Count: 8c;13s Class halonium ions [R2X+ (X=halogen)] Count: 4c;4s Class chloronium ions [R2Cl+] Count: 1s chloronium [H2Cl+] Count: -