Compounds having one group 13 element, bound with one mono- or di-anionic trident ligand, a method of preparation and application thereof as polymerization catalysts

A compound selected from the group consisting of

• wherein M is an element of group 13, RM is selected from the group consisting of hydrogen, halogen, unsubstituted or substituted alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 7 carbon atoms, aryl, alkoxy of 1 to 6 carbon atoms, cycloalkoxy of 3 to 7 carbon atoms, aryloxy, alkylthio of 1 to 6 carbon atoms, cycloalkylthio of 3 to 7 carbon atoms and arylthio with the substituent for the substituted groups being selected from the group consisting of halogen, —CN, —NO2 and alkyl of 1 to 6 carbon atoms, A and B are independently selected from the group consisting of alkylene of 2 to 4 carbon atoms unsubstituted or substituted with at least one member selected from the group consisting of alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 7 carbon atoms and aryl, all unsubstituted or substituted with at least one member of the group consisting of halogen, —CN, —NO2 and alkyl of 1 to 6 carbon atoms, L1, L2 and L3 are independently —E15(R15)— wherein E15 is an element of group 15, R15 is selected from the group consisting of a) hydrogen, b) unsubstituted or substituted alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 7 carbon atoms and aryl, the substituents for the substituted groups being selected from the group consisting of halogen, —CN, —NO2 and alkyl of 1 to 6 carbon atoms, c) RR′R″E14— wherein E14 is an element of group 14, R, R′ and R″ are independently selected from the group consisting of hydrogen and unsubstituted or substituted alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 7 carbon atoms, aryl, alkoxy of 1 to 6 carbon atoms, cycloalkoxy of 3 to 7 carbon atoms, aryloxy, alkylthio of 1 to 6 carbon atoms, cycloalkylthio of 3 to 7 carbon atoms and arylthio with the substituent for the substituted groups being selected from the group consisting of halogen, —NO2, —CN and alkyl of 1 to 6 carbon atoms and d) —SO2R′15, R′15 is selected from the group consisting of halogen, alkyl of 1 to 6 carbon atoms, haloalkyl of 1 to 6 carbon atoms and aryl optionally substituted with at least one member of the group consisting of halogen and alkyl and haloalkyl of 1 to 6 carbon atoms, X− is a non-coordinating anion with respect to M, and R1 is selected from the group consisting of a) hydrogen, b) RR′R″E14— and c) unsubstituted or substituted alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 7 carbon atoms and aryl, the substituents being selected from the group consisting of halogen —NO2, —CN and alkyl of 1 to 6 carbon atoms.