| 简介 |
The invention relates to η5 : η1-cyclopentadienylidene-phosphorane constrained geometry complexes of rare earth metals, abbreviated to η5 : η1-CpPC-CGC, method for production and use of same. The η5 : η1-CpPC-CGCs correspond to the general formula (1), wherein SE = Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; X = independently of one another, a mono-anionic diorganoamido-, bistrimethylsilylamido-, halogenido-, alkyl-, aryl-, alkoxo-, aryloxo- or alkylaluminate (AlR4-) substituent; L = neutral ligand (PR3, NR3, pyridine), solvent molecule (THF, ether, DMF, DMSO, HMPT, tetrahydropyran THP, tetrahydrothiofuran THT); R = alkyl with up to 1 - 10 C atoms or mono- or polycyclical aryl with 6 to 20 C atoms; R1, R4 = independently of one another H or methyl; R2, R3 = independently of one another, H or methyl or tertiary butyl or together a substituted cycloalkyl group; R5, R6 = methyl, n-butyl, tertiary butyl or phenyl; R7, R8 = independently of one another H, trimethylsilyl, alkyl with 1 - 10 C atoms or mono- or polycyclical aryl with 6 to 20 C atoms, and m = 0, 1, 2 or 3. |
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