COMPOUND CONTAINING ELEMENT OF GROUP III OF MENDELEEV'S PERIODIC SYSTEM BINDING WITH MONO- OR DIANIONIC TRIDENTATE LIGAND, METHOD OF THEIR SYNTHESIS AND USE AS CATALYSTS OF POLYMERIZATION Russian patent published in 2002 - IPC

FIELD: organic chemistry, polymers, catalysts. SUBSTANCE: invention relates to novel compounds containing element of group III of periodic system and binding with mono or dianionic tridentate ligand, to method of their synthesis and their use, in part, as a catalyst of (co)polymerization. Invention describes compounds of the formula (I): and the formula (2): where M means boron, aluminum or gallium atom; R_M means hydrogen atom, halogen atom, preferably chlorine atom or methyl radical; A and B mean independently carbon chain with 2-4 carbon atoms, preferably carbon chain with 2 carbon atoms; L₁,L₂ mean independently the group of the formula E₅(R₅)- where E₅ means nitrogen or phosphorus atom; R₅ means radical of the formula RR′R″E₄ where E₄ means carbon or silicon atom and R, R' and R'' mean independently hydrogen atom or alkyl radical; X₁ means no coordinating anion relative to element M; L₃ means the group of the formula -E₅(R₅)-, where E₅ means nitrogen or phosphorus atom; R₅ means alkyl radical or radical of the formula RR′R″E₄- where E₄ means silicon atom and R, R' and R'' mean independently alkyl radical; R₁ means hydrogen atom. Invention describes also method of synthesis of compound (1) and (2) and their use as catalysts of polymerization. EFFECT: new compounds indicated above, improved method of synthesis, enhanced catalytically polymerization activity. 11 cl, 6 dwg, 1 tbl