2-Tetrahydrofurfuroxo-vanadium-(III) and -(IV) complexes. Synthesis, structures and reactivities of [V2Mg2(μ3,δ2-thffo)2(μ,δ2-thffo)4Cl4]· 2CH2Cl2 and [V2(μ,δ2-thffo)2Cl2O2] †

Janas, Zofia; Sobota, Piotr; Klimowicz, Maria; Szafert, Sławomir; Szczegot, Krzysztof; Jerzykiewicz, Lucjan B.

doi:10.1039/a703828c

Cited by 21 publications

(15 citation statements)

References 17 publications

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“…Possibly the dinuclear form of the solid state is not maintained in solution or interactions are negligible. The isotropic parameters are similar to the analogous oxovanadium(IV) complexes [VOCl{OCH(Me)CH 2 OMe}] 2 [2] and [VOCl{OCH 2 (C 4 H 7 O)}] 2 [3].…”

Section: Alkoxide-bridged Oxovanadium(iv) Complexesmentioning

confidence: 53%

“…In opposition to vanadium oxytrichloride, solutions of vanadyl dichloride react with dry alcohols to Lewis acid/Lewis base adducts of the composition VOCl 2 (ROH) 3 without substitution of chloride [1]. Hovnanian and coworkers synthesized the first chloro oxovanadium(IV) alkoxide in 1993 by reduction of VOCl 3 [2].…”

Section: Introductionmentioning

confidence: 99%

“…Exothermic reaction of VOCl 3 with three equivalents of sodium (1-methoxy-2propanolate) in a mixture of toluene and 1-methoxy-2-propanol as well as reaction of VOCl 3 with 1-methoxy-2-propanol in tetrahydrofuran (THF) and use of NH 3 gas gave the dark blue dimer [VOCl{OCH(Me)CH 2 OMe}] 2 in Scheme 1. Sobota and his group obtained an analogous compound (Scheme 1) in 1997 initially in low yield by equimolar conversion of VCl 3 with sodium (2-tetrahydrofuranylmethanolate) in THF, finally with higher yields by direct reaction of VOCl 2 and the sodium salt of the ligand in THF [3].…”

Section: Introductionmentioning

confidence: 99%

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From vanadium(V) to vanadium(IV) - and backwards

Rosenthal

2009

Pure and Applied Chemistry

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With bidentate alkoxy alkoxide and alkoxy alcohol ligands, respectively, a series of oxovanadium complexes in the oxidation state +4 is synthesized starting from oxovanadium(V) compounds. The reaction of two or more equivalents of 2-methoxyethanol with VOCl 3 in n-hexane yields a mixture of the monomeric oxovanadium(IV) complex cis-[VOCl 2 (HOCH 2 CH 2 OMe-κ 2 O)(HOCH 2 CH 2 OMe-κO 1 )] and the alkoxide-bridged oxovanadium(IV) dimer syn-[VOCl(μ-OCH 2 CH 2 OMe-κ 2 O)] 2 , which are separated by fractionated crystallization. The same reaction with 2-ethoxy-and 2-iso-propoxyethanol gives only the alkoxide-bridged oxovanadium(IV) dimers anti-[VOCl(μ-OCH 2 CH 2 OR-κ 2 O)] 2 (R = Et, i Pr). All alkoxide-bridged oxovanadium(IV) dimers are furthermore obtained as decomposition products of the chloride-bridged oxovanadium(V) complexes [VO(μ-Cl)Cl(OCH 2 CH 2 OR-κ 2 O)] 2 (R = Me, Et, i Pr) by Cl 2 elimination and react inversely with Cl 2 to the vanadium(V) compounds. Scheme 1 Chloro oxovanadium(IV) alkoxides with square pyramidal coordination sphere.Fig. 4 Side view of syn-[VOCl(μ-OCH 2 CH 2 OMe-κ 2 O)] 2 2 (left) and anti-[VOCl(μ-OCH 2 CH 2 OEt-κ 2 O)] 2 3 (right) along the V-O-V-O plane.

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Section: Alkoxide-bridged Oxovanadium(iv) Complexesmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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From vanadium(V) to vanadium(IV) - and backwards

Rosenthal

2009

Pure and Applied Chemistry

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“…Previous attempts to obtain such oxovanadium(V) compounds from VOCl 3 failed due to reduction of the vanadium atom during the course of the reaction leading to [VOCl(OCH(CH 3 )-CH 2 OCH 3 )] 2 [25]. The only other oxovanadium complex incorporating a chelating ether functionalized alcohol [VOCl(OCH 2 (C 4 H 7 O))] 2 was prepared directly from vanadium(IV) starting material [26].…”

Section: Introductionmentioning

confidence: 99%

Tetrahedral Coordination in the First Structurally Characterized Dichlorooxovanadium(V) Alkoxide

Rosenthal

Girgsdies

2002

Z. anorg. allg. Chem.

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Reaction of VOCl 3 with 2-phenoxyethanol in n-hexane in a 1:1 fashion gives dichlorooxo(2-phenoxyethanolato)vanadium(V). HCl elimination yields the orange vanadium(V) complex, which is the first structurally characterized dichlorooxovanadium(V) alkoxide. The structure analysis reveals an unexpected tetrahedral coordination around the vanadium atom in the monomeric Tetraedrische Koordination im ersten strukturell charakterisierten Dichlorooxovanadium(V)-alkoxidInhaltsübersicht. Die Reaktion von VOCl 3 mit 2-Phenoxyethanol in n-Hexan im Verhältnis 1:1 ergibt Dichlorooxo(2-phenoxyethanolato)vanadium(V). HCl-Eliminierung führt zu dem orangefarbenen Vanadium(V)-Komplex, bei dem es sich um das erste strukturell charakterisierte Dichlorooxovanadium(V)-alkoxid handelt. Die Röntgenstrukturanalyse zeigt eine unerwartete tetraedrische Koor-

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“…[5,9,13,15,17Ϫ19,21,23] Owing to the fact that the oxygen atom O(3) of the methoxy group encounters the trans influence of the doubly bonded oxygen atom O(1), its distance to the vanadium atom is, as expected, the longest [2.3120 (15) 2 , where the aryloxy-and alkoxyalkoxides are pendant or bridging, respectively, [7,8,19] both groups in the compound reported here coordinate directly to a single vanadium centre. Although [VOCl 2 (OCH 2 CH 2 OPh)] was obtained by the corresponding reactions with 2-phenoxyethanol, both dichloro(oxo)vanadium compounds differ completely in their structures.…”

Section: Synthesis and Structurementioning

confidence: 92%

Synthesis, Molecular Structure, and Olefin Polymerisation Activity of an Oxovanadium(V) Alkoxide with Unprecedented Chloride Bridging Ligands

et al. 2004

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The reaction of 2‐methoxyethanol or (2‐methoxyethanolato)lithium with VOCl3 yields the chloro‐bridged dinuclear complex [VOCl2(OCH2CH2OCH3)]2, which has been characterised spectroscopically and structurally by single‐crystal X‐ray diffraction analysis. This is the first reported structure of a neutral dinuclear oxovanadium complex connected by bridging chloro ligands. The orange complex is a precatalyst for the polymerisation of ethene and the oligomerisation of styrene. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)

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2-Tetrahydrofurfuroxo-vanadium-(III) and -(IV) complexes. Synthesis, structures and reactivities of [V2Mg2(μ3,δ2-thffo)2(μ,δ2-thffo)4Cl4]· 2CH2Cl2 and [V2(μ,δ2-thffo)2Cl2O2] †

Cited by 21 publications

References 17 publications

From vanadium(V) to vanadium(IV) - and backwards

From vanadium(V) to vanadium(IV) - and backwards

Tetrahedral Coordination in the First Structurally Characterized Dichlorooxovanadium(V) Alkoxide

Synthesis, Molecular Structure, and Olefin Polymerisation Activity of an Oxovanadium(V) Alkoxide with Unprecedented Chloride Bridging Ligands

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