Results 131 to 140 of about 1,053 (173)

How strong are the metallocene–metallocene interactions? Cases of ferrocene, ruthenocene, and osmocene

Physical Chemistry Chemical Physics, 2016
An exhaustive exploration of the potential energy surfaces of ferrocene, ruthenocene and osmocene dimers has been performed.
Alba, Vargas-Caamal, Sudip, Pan, Filiberto, Ortiz-Chi, Jose Luis, Cabellos, Roberto A, Boto, Julia, Contreras-Garcia, Albeiro, Restrepo, Pratim K, Chattaraj, Gabriel, Merino   +8 more
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Hard versus Soft Materials as Supports for Metallocene and Post‐Metallocene Catalysts

Macromolecular Reaction Engineering, 2009
AbstractThe influence of organic supports on the polymerization behavior of post‐metallocene catalysts is studied and compared with similarly supported titanium and zirconium metallocenes. The effects of the immobilization, activation, and polymerization process were studied by video microscopy, laser confocal fluorescence microscopy, SEM, and TEM.
Naundorf, C., Ferrari, D., Rojas, G., Fink, G., Klapper, M., Müllen, K.   +5 more
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Chemical and electrochemical oxidation of metallocenes, reactions of metallocenes with mercury salts

Journal of Organometallic Chemistry, 1974
Abstract The products of chemical and electrochemical oxidation of metallocenes, (C 5 H 5 ) 2 M (M  Fe, Ru, Os), were investigated. (C 5 H 5 ) 2 Fe on Pt and Hg anodes was oxidized to the ferricenium cation while the electrolysis of osmocene on Pt electrode led to the previously unknown (C 5 H 5 ) 2 Os o BF 4 − salt and oxidation of ruthenocene ...
L.I. Denisovich, N.V. Zakurin, A.A. Bezrukova, S.P. Gubin   +3 more
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Metathesis Route to Bridged Metallocenes

Journal of the American Chemical Society, 2002
A variety of bridged metallocenes of Fe(II), Ru(II), Zr(IV), or Hf(IV) were prepared in good yield by the interannular ring-closing metathesis reaction of 1,1'-diallylmetallocenes using the Ru-carbene catalyst, and the present method was extended to diastereoselective reaction to give dl- or meso-bridged metallocenes with excellent stereoselectivity.
Masamichi, Ogasawara, Takashi, Nagano, Tamio, Hayashi   +2 more
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The electrochemical synthesis of metallocenes, polymethylmetallocenes, ‘open metallocenes’ and metal phenylacetylides

Applied Organometallic Chemistry, 1990
AbstractMetallocenes, polymethylmetallocenes, metal dimethylpentadienyls and metal phenylacetylides were synthesized by the oxidation of the metal in a solution (acetonitrile, acetonitrile/tetrahydrofuran or acetonitrile/1,2‐dimethoxyethane) of the carbon acid C*H (where C*PhCC, C5H5, CH3C5H4, (CH3)5C5, indenyl, fluorenyl and 2,4‐dimethylpentadienyl).
Allan T Casey, Angelica M Vecchio
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Solitaire and Gemini Metallocene Porphyrazines

Journal of the American Chemical Society, 2001
We report the synthesis and physical characterization of a series of peripherally functionalized porphyrazines (pzs) of the forms H2[pz(A;B3)] and trans-H2[pz(A2);B2], where A is a dithiolene chelate of molybdocene or vanadocene and B is a solublizing group.
S L, Michel, D P, Goldberg, C, Stern, A G, Barrett, B M, Hoffman   +4 more
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Metallocene industriell

Nachrichten aus Chemie, Technik und Laboratorium, 1995
AbstractDurch technische Umsetzung der mit Metallocenen katalysierten Polymerisation will Hoechst im europäischen Polypropylen‐Geschäft die Nr. 1 werden. Metallocen‐Katalysatoren sollen zur Realisierung von drop in‐Technologien auch an Wettbewerber verkauft werden. Neue Cycloolefin‐Copolymere versprechen eine globale Spitzenposition.
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Metallocene-containing conjugated polymers

Advances in Colloid and Interface Science, 2008
The paper gives a review of publications on polymers with conjugated matrices (PPy, PTh, PAni, hydrocarbon or mixed chains...) which incorporate metallocene complexes (Fe, Ru, Co; Ni, Ti, Zr, Ta) with two cyclopentadienyl ligands (Cp) and their derivatives, in particular with methylated cyclopentadienyl rings (Cp*), as well as hemi-metallocene ...
Mikhail A, Vorotyntsev, Svetlana V, Vasilyeva   +1 more
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Metallocenes and Metallacarboranes

2011
Electrochemical Behaviour of First Row Transition Metal Sandwich Complexes: Metallocenes and MetallacarboranesChapter 5 opens Part 3 on the applicative aspects of inorganic electrochemistry, dealing with two milestones in organometallic chemistry: metallocenes and metallacarboranes.
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Antitumour Metallocenes

2000
This thesis reports a study of the chemical stability and coordination chemistry of several antitumour metallocenes Cp2MCl2 (Cp = h5-C5H5; M = Ti 1, V 2, Nb 3, Mo 4), as well as derivatives of Cp2TiCl2 1, with nucleic acids, nucleic acid constituents and proteins.
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