Results 31 to 40 of about 6,290 (219)
Developments of Chiral Metallocenes as Polymerization Catalysts
Molecules, 2005 This review article describes developments in chiral metallocenes as polymerization catalysts focusing on C2 symmetric ansa-zirconocene complexes. Selective synthesis of rac-isomers of ansa-zirconocenes are surveyed.
Takeshi Shiono, Yuushou Nakayama
doaj +1 more source
Potassium-mediated zincation of ferrocene and ruthenocene : potassium, the architect behind supramolecular structural variations [PDF]
, 2010 Direct zincation of ferrocene and ruthenocene by the synergic base [PMDETA.K(μ-TMP)(μ-Me)Zn(Me)] produces the monozincated complexes [{PMDETA.K(μ-Me)2Zn(Fc)}∞] and [{PMDETA.K(μ-Me)2Zn(Rc)}2] respectively, having similar monomeric (dinuclear) units but ...
Alan R. Kennedy +32 more
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Electrochemically driven regioselective C−H phosphorylation of group 8 metallocenes
Nature Communications, 2022 Metallocene-based phosphines are compounds with potential use in catalysis. Here, the authors report the electrochemical regioselective functionalization of group 8 metallocenes with phosphine oxides; over 60 examples of phosphorylated (benzo)ferrocenes ...
Hao Zheng +8 more
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Photooxidation of Some Metallocenes in a Polymer Matrix
Molecules, 2005 The changes in the electronic absorption spectra (UV-Vis) of some metallocene-doped poly(methyl methacrylate) (PMMA) thin films containing chloroform molecules as impurities were studied after photoexcitation in the nitrogen atmosphere.
B. Mallik
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Gas phase polymerization of ethylene with a silica-supported metallocene catalyst: influence of temperature on deactivation [PDF]
, 1997 Ethylene was polymerized at 5 bar in a stirred powder bed reactor with silica supported rac-Me2Si[Ind]2ZrCl2/methylaluminoxane (MAO) at temperatures between 40°C and 80°C using NaCl as support bed and triethylaluminium (TEA) as a scavenger for impurities.
Meier, G.B. +5 more
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Group 13 Decamethylmetallocenium Cations [PDF]
, 2007 Salts containing the decamethylmetallocenium cations, [( C5Me5) M-2](+) ( or Cp*M-2(+)) of the group 13 "metals" B, Al and Ga have been prepared using a variety of synthetic routes.
Cowley, Alan H. +4 more
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Halogen and Hydrogen Bonding Interplay in the Crystal Packing of Halometallocenes
Molecules, 2018 This paper focuses in the influence of halogen atoms in the design and structural control of the crystal packing of Group VIII halogenated metallocenes.
Karina Shimizu, João Ferreira da Silva
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Propene-cycloolefin polymerization [PDF]
Polyolefins Journal, 2014 Highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (N) or of copolymerizing them with ethene (E) or propene (P).
Laura Boggioni, Incoronata Tritto
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Sci, 2021 Hypergolic materials synthesis is a new preparative technique in materials science that allows a wide range of carbon or inorganic solids with useful properties to be obtained.
Nikolaos Chalmpes +5 more
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Molecular catalysis for precise olefin polymerization and ROP 2015 [PDF]
, 2016 The growth of emerging markets, particularly in the Far East, has fuelled the demand for new plastic materials. This in turn has stimulated both academic and industrial interest in the design of catalyst systems for which new Intellectual Property (IP ...
Redshaw, Carl
core +3 more sources