OXO-NITROGENATED IRON COMPLEX, CATALYTIC SYSTEM COMPRISING SAID OXO-NITROGENATED IRON COMPLEX AND PROCESS FOR THE (CO)POLYMERIZATION OF CONJUGATED DIENES

摘要

An oxo-nitrogenated iron complex having general formula (I) or (II) wherein: R₁ and R₂ identical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated C₁-C₂₀, preferably C₁-C₁₅, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R₃, identical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated C₁-C₂₀, preferably C₁-C₁₅, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X₁ and X₂, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine; or are selected from linear or branched C₁-C₂₀, preferably C₁-C₁₅, alkyl groups, —OCOR₄ groups or —OR₄ groups wherein R₄ is selected from linear or branched C₁-C₂₀, preferably C₁-C₁₅, alkyl groups. Said oxo-nitrogenated iron complex having general formula (I) or (II) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes.