Project supported by the Major State Basic Research Development Program(No.G1999064801) the National Natural Science Foundation of China (No. 20372022) and the Research Fund for the Doctoral Program of Higher Education (No. 20020251002).
Complexes (R^1Cp)(R^2Ind)ZrCl2, the catalysts previously reported active for ethylene polymerization showed high activity in ethylene/1-hexene copolymerization and propylene polymerization in the presence of MAO. ...
theNationalNaturalScienceFoundationofChina (No .2 992 5 10 1);theMajorStateBasicResearchDevelopmentProgram (No .G19990 64 80 0 )
Metallocene complex Cp tt 2ZrCl 2 (Cp tt =η 5 1,3 t Bu 2 C 5 H 3 ) (1) has been prepared from the reaction of LiCp tt with ZrCl 4 in good yield. Reactio...
theMajorStateBasicResearchDevelopmentProgram (No .G 19990 6 480 1)andtheNationalNaturalScienceFoundationofChina (No .2 0 0 72 0 0 4)
Three new homo-bimetallic metallocene complexes were prepared by RCpMCl3 (M= Ti, Zr) and Si-bridged compounds, and were all well characterized structurally. These complexes with the methylaluminoxane (MAO) are highly ...
EHMO method has been used to calculate the electronic structure of PD_2ML compounds (PD-pentadienyl or methyl-substituted one, M-transition metal atom, L-Lewis base). Compared with CP_2M (CP-cyclopentadienyl), fragmen...