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- W2022144271 abstract "The direct reaction of VCl3 and ethyl acetate yields [V2(µ-Cl)2Cl4(MeCO2Et)4]1. The compound [V2(µ-Cl)2Cl4{CH2(CO2Et)2}2]2 was obtained in dichloromethane via the substitution of MeCO2Et in 1 by ethyl malonate. During crystallization of 2, under the influence of dioxygen and moisture, the tetrameric compound [{VOCl2[CH2(CO2Et)2]}4]·2CH2Cl23 was formed. The crystal structures of 1 and 3 have been determined by single-crystal X-ray diffraction studies. The dimeric compound 1 exhibits six-co-ordinate VIII centres [separated by a V ⋯ V distance of 3.590(1)Å] surrounded by two terminal Cl atoms, two carbonyl oxygen atoms of co-ordinated ethyl acetate molecules and linked by two bridging Cl atoms. In the tetrameric species 3, the four vanadium(IV) atoms have equivalent octahedral geometries, being bonded by two mutually cis chlorine atoms, two mutually cis oxygen atoms. High catalytic activity was found for 1, 2 and [V2(µ-Cl)2Cl4(thf)4](thf = tetrahydrofuran)." @default.
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- W2022144271 date "1995-01-01" @default.
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- W2022144271 title "Synthesis and characterization of new di- and tetra-meric vanadium intermediates of olefin polymerization catalysts. Crystal structures of [V<sub>2</sub>(µ-Cl)<sub>2</sub>Cl<sub>4</sub>(MeCo<sub>2</sub>Et)<sub>4</sub>] and [{VOCl<sub>2</sub>[CH<sub>2</sub>(CO<sub>2</sub>Et)<sub>2</sub>]}<sub>4</sub>]·2CH<sub>2</sub>Cl<sub>2</sub>" @default.
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- W2022144271 doi "https://doi.org/10.1039/dt9950001727" @default.
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