Mapa strony Przejdź do treści

Repozytorium

Wyszukaj

Kolekcje

Inne

2-tetrahydrofurfuroxo-vanadium-(III) and (IV) complexes. Synthesis, structures and reactivities of [V2Mg2(μ3,η2-thffo)2(μ,η2-thffo)4Cl4]*2CH2Cl2 and [V2(μ,η2-thffo)2Cl2 O2].

Autorzy

Zofia Janas

Piotr Sobota

M. Klimowicz

Sławomir Szafert

Krzysztof Szczegot

Lucjan B. Jerzykiewicz

Rok wydania

1997

Czasopismo

Journal of the Chemical Society, Dalton Transactions

Strony

3897-3901

DOI

10.1039/A703828C

Kolekcja

Naukowa

Język

Angielski

Typ publikacji

Artykuł

Streszczenie

Vanadium complexes of 2-tetrahydrofurfuroxide (2-tetrahydrofurylmethoxide) (thffo) with the metal in oxidation state III and IV have been prepared and characterized. The reaction of [VCl3(thf)3] with 1.5 equivalents of [Mg(thffo)2] in tetrahydrofuran (thf) or CH2Cl2 led to the formation of [V2Mg2(µ3,η2-thffo)2(µ,η2-thffo)4Cl4]· 2CH2Cl21. Its structure consists of centrosymmetric tetranuclear molecules and CH2Cl2 of crystallization. Two Mg and two V atoms have distorted octahedral geometry and form a nearly regular Mg2V2 rhombus. The V · · · V distance is 3.266(2) Å. The reaction of [VOCl2(thf)2] with Na(thffo) in thf yielded [V2(µ,η2-thffo)2Cl2O2] 2. Two VOCl units are linked by alkoxide oxygen bridges. The V · · · V distance is 3.070(1) Å. Compounds 1 and 2 are very effective procatalysts for the polymerization of ethylene.

Adres publiczny

https://doi.org/10.1039/A703828C

Strona internetowa wydawcy

https://www.rsc.org/

Podobne publikacje
1998

Synthesis, properties and crystal structures of ionic [Al2(μ,η2-thffo)2(EtOH)4Cl2]Cl2, [Al3(μ,η2-thffo)4Cl4][AlEtCl3] and tetranuclear [Al4(μ,η2-thffo)4(μ-OEt)2Cl6] (thffo = OCH2CH(CH2)3O) compounds.

Sobota Piotr, Utko Józef, Brusilovets A. I., Jerzykiewicz Lucjan B.

2000

Polynuclear magnesium and magnesium-titanium species. Syntheses and crystal structures of [Mg4(μ3η2-ddbfo)2(μ,η2-ddbfo)2(μ,η1-ddbfo)2(η1-ddbfo)2],[Mg4(μ3-OMe)2(μ,η2-ddbfo)2(μ,η1-ddbfo)2(η1-ddbfo)2(CH3OH)5], and [Mg4(μ3,η2-thffo)2(μ,η2-thffo)2(μ,η1-thffo)2{μ-OTi(DIPP)3}2] aggregates.

Sobota Piotr, Utko Józef, Sztajnowska Katarzyna, Ejfler Jolanta, Jerzykiewicz Lucjan B.

2000

Syntheses and crystal structure of [Li4Zn(μ3,η2-ddbfo)2(μ,η2-ddbfo)3Cl(CH3CN)2]·2CH3CN,[Na4(μ,η2-ddbfo)4(CH3CN)4] and [Zn2(μ,η1-ddbfo)2Cl2(py)2] aggregates.

Sobota Piotr, Klimowicz M., Utko Józef, Jerzykiewicz Lucjan B.