| 摘要 |
An oxo-nitrogenated vanadium complex having the general formula (I): in which: - R1, R2, R3, R4, R5, R6 and R7, mutually identical or different, represent a hydrogen atom; or are selected from optionally halogenated, linear or branched C1-C20, preferably C1-C15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; - X1 and X2, mutually identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or are selected from linear or branched C1-C20, preferably C1-C15, alkyl groups, -OCOR8 groups or -OR8 groups in which R8 is selected from linear or branched C1-C20, preferably C1-C15, alkyl groups; - Y is selected from ethers such as, for example, diethyl ether, tetrahydrofuran (THF), dimethoxyethane, preferably is tetrahydrofuran (THF); - n is 0 or 1. Said oxo-nitrogenated vanadium complex having the general formula (I) may advantageously be used in a catalytic system for (co)polymerising conjugated dienes. |
