The aim is to investigate the interaction of halogenides of the rare-earth elements with anion-radicals of the naphthaline and diphenylbutadiene, to study the structure and properties of the forming products and also their catalytic activity in the stereospecific polymerization of the isoprene. The high-reaction-able naphthaline complexes for the whole series of the lanthanides have been created. The new synthesis method of the cyclopentadienides processing from nasthaline complexes has been proposed. The new type of the catalystes capable to polymerize stereoregularly the isoprene with high rate without co-catalyst has been proposed. The reduction of the azobenzene with naphthaline samarium complex has been studied. The tetranuclear complex of the samarium with azobenzene and phenylnitre ligands has been made firstly and characterized structurally. The representatives of the new class lanthanide complexes - bis-diphenylbutadiene ate-complex of lutetium and bi-nuclear complex of gadolinium with bridge diphenylbutadiene have been synthesized firstly and characterized structurally. The conclusion about ion nature of these complexes has been made with attachment of the magnetic and designed data.Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio