Über die Umsetzung von Wolframoxidtetrachlorid mit organischen Verbindungen

Funk, H.; Mohaupt, G.

doi:10.1002/zaac.19623150310

Cited by 26 publications

(2 citation statements)

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“…for C 6 There is, however, a distinct lack of information available on the preparation of phenoxide complexes derived from tungsten oxytetrachloride (WOCI4). [24] showed that mono-and bis-phenoxide complexes could be prepared from WOCI4 and salicylic acid, salicylaldehyde or methyl salicylate. By employing quite harsh reaction conditions, Prasad and coworkers …”

Section: Methodsmentioning

confidence: 99%

Dicyclopentadiene Polymerization Using Well-Characterized Tungsten Phenoxide Complexes

Bell

1992

ACS Symposium Series

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Pure WOCl 4 -x (OAr) x complexes (x = 1, 2, 3 and 4; and OAr = phenoxide) were prepared in essentially quantitative yield by reacting tungsten oxytetrachloride (WOCl4) with the requisite amount of phenol or metal phenoxide. The ring-opening metathesis polymerization (ROMP) of dicyclopentadiene (DCPD) by WOCl 3 (OAr), WOCl 2 (OAr) 2 , and WOCl(OAr) 3 , in combination with trialkyltin hydride (R 3 SnH) was assessed. The tungsten catalysts produced are capable of bulk-polymerizing DCPD to very high polymer yields. The polymerization ability of a particular procatalyst was correlated with the reduction potential (W(VI)-->W(V)) of the complex and the charge on the oxygen of the di-or tri-substituted phenoxide ion. The effects of changing DCPD:W, Sn:W, and rate moderator:W ratios on residual monomer levels were studied.Transition metal-catalyzed ring-opening metathesis polymerization (ROMP) of cyclic olefins is an important application of the olefin metathesis reaction (Scheme 1) [7]. Polynorbornene, polyoctenamer, and polydicyclopentadiene are currently produced on an industrial scale using this process [2].

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Section: Methodsmentioning

confidence: 99%

Dicyclopentadiene Polymerization Using Well-Characterized Tungsten Phenoxide Complexes

Bell

1992

ACS Symposium Series

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“…The reaction between WOCl 4 and salicylic acid was reported by Funk, 12 who performed melt reactions at the melting point of salicylic acid (ca. 160 • C) and proposed the formation of several compounds on the basis of elemental analysis.…”

Section: Introductionmentioning

confidence: 91%

Synthesis and characterisation of tungsten(vi) oxo-salicylate complexes for use in the chemical vapour deposition of self-cleaning films

et al. 2005

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Tungsten(VI) oxo-salicylate complexes were prepared in moderate yield (47 to 63%) by the reactions of WOCl4 and two equivalents of either 3-methylsalicylic acid (MesaliH2) or 3,5-di-isopropylsalicylic acid (di-i-PrsaliH2). Performing the reaction in refluxing toluene afforded the two analogous ditungsten complexes 1, [{WO(Mesali)(MesaliH)}2(mu-O)], and 2, [{WO(di-i-Prsali)(di-i-PrsaliH)}2(mu-O)], however in refluxing hexane the mononuclear tungsten complex , [WO(di-i-Prsali)(di-i-PrsaliH)Cl], was isolated. The single crystal X-ray study of revealed a pseudo-octahedral geometry around the tungsten centres. Aerosol assisted chemical vapour deposition of or afforded brown tungsten trioxide thin films. These films were converted to yellow fully oxidised WO3 on annealing in air at 550 degrees C for 30 minutes. The yellow WO3 films demonstrate preferred orientation on the substrate and show interesting functional properties-photo induced hydrophilicity and photocatalytic activity.

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The Coordination Chemistry of Tungsten

Dori

1981

Progress in Inorganic Chemistry

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Über die Umsetzung von Wolframoxidtetrachlorid mit organischen Verbindungen

Cited by 26 publications

References 2 publications

Dicyclopentadiene Polymerization Using Well-Characterized Tungsten Phenoxide Complexes

Dicyclopentadiene Polymerization Using Well-Characterized Tungsten Phenoxide Complexes

Synthesis and characterisation of tungsten(vi) oxo-salicylate complexes for use in the chemical vapour deposition of self-cleaning films

The Coordination Chemistry of Tungsten

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