Synthesis of (Imido)Vanadium(V) Dichloride Complexes Containing Anionic N‑Heterocyclic Carbenes That Contain a Weakly Coordinating Borate Moiety: New MAO-Free Ethylene Polymerization Catalysts
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https://figshare.com/articles/dataset/Synthesis_of_Imido_Vanadium_V_Dichloride_Complexes_Containing_Anionic_N_Heterocyclic_Carbenes_That_Contain_a_Weakly_Coordinating_Borate_Moiety_New_MAO_Free_Ethylene_Polymerization_Catalysts/3363475
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资源简介：
Synthesis and structural
analysis of (imido)vanadium(V) complexes
containing anionic N-heterocyclic carbenes with a weakly coordinating
borate [B(C6F5)3] moiety (WCA-NHC)
of the type [V(NR)Cl2(WCA-NHC)] [R = 1-adamantyl, C6H5, 2,6-Me2C6H3; NHC = 1,3-bis(2,6-dimethylphenyl)imidazolin-2-ylidene] have
been explored; the WCA-NHC forms a σ-bond with vanadium as alkyl
ligand (without strong π-donation) on the basis of crystallographic
analysis [V–CNHC = 2.039(3)–2.049(2) Å].
[V(N-2,6-Me2C6H3)Cl2(WCA-NHC)] exhibited remarkable catalytic activity (e.g., 11000
kg-PE/mol-V·h) for ethylene polymerization in the presence of
AliBu3, and the activity was
much higher than those in the presence of MAO and Et2AlCl.
创建时间：
2016-06-07
