catalysis catalysts chemistry complexcompounds condensedmatter congresses exchangereactions hydrocarbons hydrogen intermetalliccompounds isotopes isotopeseparation ligandfieldtheory ligands materialstesting metals nuclearfusion nuclearphysics organic organiccompounds organometalliccompounds phosphine physicalorganicchemistry physics qd262 qd411t88o1975 stereochemistry synthesis transitionmetalclusters transitionmetalcomplexes vk5500