Group I: the alkali and coinage metals. Group II: the alkaline earths and zinc, cadmium and mercury; carbaboranes, including their transition complexes. Group III: boron, aluminium, gallium, indium, and thallium. Group IV: phosphorus, arsenic, antimony, and bismuth; organic organometallic chemistry; transition metal carbonyls; organometallic cluster complexes; complexes containing transition metal-carbon sigma-bonds of the groups scandium to manganese, including multiple-bonded species; complexes containing transition metal-carbon sigma-bonds of the groups iron, cobalt and nickel, including multiple-bonded species; hydrocarbon transition metal pi-complexes, other than eta5-cyclopentadienyl and eta-arene complexes; eta5-cyclopentadienyl and eta-arene substituted transition metal complexes.