METALLOCENES, CATALYTIC SYSTEM CONTAINING THEREOF, METHOD OF PREPARING POLYOLEFINS, POLYOLEFIN Russian patent published in 2000 - IPC

FIELD: organometallic synthesis. SUBSTANCE: invention provides new metallocene compounds depicted by general formula I: , in which M² is IV group metal; R¹ and R² are halogen atoms; R³ hydrogen atom; R⁴ hydrogen, aryl, or two or more R⁴ residues together with atoms linked to them form cyclic system; R⁵ lower alkyl; R⁶ hydrogen, lower alkyl; R⁷ is group or wherein R¹¹ and R¹² are lower alkyls; provided that, at least one of R⁶ residues and also at least one of R⁴ and R⁵ residues differ from hydrogen atom. EFFECT: enlarged choice of organometallic catalysts. 9 cl, 27 ex