Search results for "Dicyclopentadiene"

showing 2 items of 2 documents

New practical tungsten(VI) based catalyst systems for ring opening metathesis polymerisation

2002

Abstract Tungsten(VI) complexes of the type trans -[WCl 2 (diol)(OAr) 2 ] were studied as catalyst precursors for ROMP of norbornene and dicyclopentadiene. These compounds form active catalysts when treated by simple Grignard reagents, such as methyl magnesium iodide or neophyl magnesium chloride. Moreover, polymerisations can be run under ambient atmosphere without complicated inert atmosphere techniques.

MagnesiumDiolchemistry.chemical_elementROMPMagnesium iodideCatalysisInorganic Chemistrychemistry.chemical_compoundchemistryDicyclopentadieneMaterials ChemistryOrganic chemistryRing-opening metathesis polymerisationPhysical and Theoretical ChemistryNorborneneInorganic Chemistry Communications
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Imidotungsten(VI) complexes with chelating phenols as ROMP catalysts

2011

Abstract Tungsten(VI) complexes of the type [W(NPh)Cl3(L)] (L = chelating phenolate) were studied as catalyst precursors for ROMP of 2-norbornene, dicyclopentadiene and 5-vinyl-2-norbornene. These compounds form active catalysts when treated by ethyl magnesium bromide. Moreover, polymerisations can be run under ambient atmosphere without complicated inert atmosphere techniques. Synthesis and crystal structure of a new precursor complex [W(NPh)Cl3(LS)] (LS = 2,4-di-tert-butyl-6-(phenylthiomethyl)phenolate) are also described.

chemistry.chemical_elementROMPCrystal structureTungstenCatalysisInorganic Chemistrychemistry.chemical_compoundchemistryDicyclopentadienePolymer chemistryMaterials ChemistryOrganic chemistryChelationPhenolsPhysical and Theoretical ChemistryInert gasta116Inorganic Chemistry Communications
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