Výsledky vyhledávání - "E. N. Veksler"

Reduction of bis[(2-phosphinoethyl)tetramethyl-cyclopentadienyl]zirconium dichlorides: intramolecular C-H activation vs. stabilization of the low-valence metal center

Autor: Roman S. Kirsanov, Maxim V. Borzov, D. P. Krut'ko, E. N. Veksler

Publikováno v: Russian Chemical Bulletin. 57:68-77

Reduction of the R2P-functionalized zirconocene dichlorides [C5Me4(CH2)2PR2] (C5Me5)ZrCl2 (R = Me (1) and Ph (2)) and [C5Me4(CH2)2PMe2][C5Me4(CH2)2PR2]ZrCl2 (R = Me (3) and Ph (4)) with amalgamated magnesium was studied. In the reduction of compounds

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34a00ddca24767cbf16cfe39535f6e6a
https://doi.org/10.1007/s11172-008-0010-2

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Synthesis of propylene-ethylene copolymers in liquid propylene using ansa-metallocenes of the C 1 symmetry

Autor: P. M. Nedorezova, E. N. Veksler, V. A. Optov, B. F. Shklyaruk, V. I. Tsvetkova, Alexander M. Aladyshev

Publikováno v: Polymer Science Series A. 49:99-107

The copolymerization of ethylene with propylene in the liquid propylene initiated by ansa-metallocenes of the C 1 symmetry, rac-[1-(9-η5-fluorenyl)-2-(5,6-cyclopenta-2-methyl-1-η5-indenyl)ethane]zirconium dichloride and rac-[1-(9-η5-fluorenyl)-2-(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a22112758e846b18a3ab03d7f48a83a
https://doi.org/10.1134/s0965545x07020010

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Bulk propylene polymerization in the presence of ansa-metallocenes of C 2 and C 1 symmetries: From a rigid thermoplastic to elastomeric stereoblock polypropylene

Autor: Dmitrii A. Lemenovskii, G. P. Brusova, Alexander M. Aladyshev, V. I. Tsvetkova, V. A. Optov, E. N. Veksler, P. M. Nedorezova

Publikováno v: Kinetics and Catalysis. 47:245-250

Bulk propylene polymerization in the presence of ansa-metallocenes with C2 and C1 symmetries has been studied. The catalytic activity, polymerization kinetics, and the molecular weight of polypropylene (PP) depend strongly on catalyst formation condi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f49254eed5839958421847c20e66253a
https://doi.org/10.1134/s0023158406020145

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Mono- and bis-[2-(P,P-dimethylphosphanyl)ethyl]tetramethylcyclopentadienyl zirconium(IV) complexes: Synthesis and structural studies in crystalline state and in solutions

Autor: E. N. Veksler, Andrei V. Churakov, Dmitrii P. Krut’ko, Lyudmila G. Kuzmina, Maxim V. Borzov

Publikováno v: Journal of Organometallic Chemistry. 690:4036-4048

Synthetic routines for a new ligand C5Me4CH2CH2PMe2 (2b) in forms of its Li- (2b-Li), Na- (2b-Na) salts and in the CH-form (2b-H), as well as for silanes Me3Si-C5H4CH2CH2PMe2 (3a) and Me3Si-C5Me4CH2CH2PMe2 (3b) have been developed. On the basis of it

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::864204fab448e9308d96811ad1bed85c
https://doi.org/10.1016/j.jorganchem.2005.06.008

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2-Phosphinothioyl- and 2-phosphinoylethylcyclopentadienyl zirconium and titanium complexes. Crystal structure of [η5:η1-C5H4CH2CH2P(O)Ph2]TiCl3

Autor: A. V. Churakov, D. P. Krut'ko, Maxim V. Borzov, E. N. Veksler

Publikováno v: Russian Chemical Bulletin. 54:117-123

The intracomplex conversion of (2-diphenylphosphanoethyl)cyclopentadienyl zirconium and titanium complexes into the corresponding 2-phosphinothioyl and 2-phosphinoyl derivatives, viz., (η5-C5H5)[η 5-C5H4CH2CH2P(S)Ph2]ZrCl2, [η5-C5H4CH2CH2P(S)Ph2]Z

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50e49a40062203d3c88b4425b34e1571
https://doi.org/10.1007/s11172-005-0226-3

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On the regioselectivity of alkylation of the (trimethylsilyl)tetramethylcyclopentadienide anion. A new approach to the synthesis of 1,2,3,4-tetramethylfulvene

Autor: Maxim V. Borzov, D. P. Krut'ko, E. N. Veksler

Publikováno v: Russian Chemical Bulletin. 53:2182-2186

The regioselectivity of alkylation of lithium (trimethylsilyl)tetramethylcyclopentadienide C5Me4SiMe3−Li+ was studied by 1H and 13C NMR spectroscopy using its reactions with MeI, MeOTs, ClCH2CH2Br, and ClCH2CH2I in different solvents as representat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f78517946579b7e1799a16b388bcdc8
https://doi.org/10.1007/s11172-005-0095-9

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[Untitled]

Autor: Alexander M. Aladyshev, Dmitry A. Lemenovskii, D.V. Savinov, E. N. Veksler, P. M. Nedorezova, V. I. Tsvetkova

Publikováno v: Kinetics and Catalysis. 44:311-318

The effects of various pathways of the formation of catalytic systems based on the rac-Me2SiInd2ZrCl2 metallocene on the activity and properties of polypropylene prepared by the bulk polymerization of propylene were studied in detail. It was found th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::734a0818daf1b018234710f3894c1247
https://doi.org/10.1023/a:1024430500100

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New metallocenes of early transition metals with functional groups in organic ligands. Red-ox transformations

Autor: Andrej V. Churakov, Maxim V. Borzov, Dmitrii P. Krut’ko, Roman S. Kirsanov, E. N. Veksler, Dmitri A. Lemenovskii

Publikováno v: Pure and Applied Chemistry. 73:367-371

The reduction behavior of the novel zirconocene dichlorides, (h5-C5Me5) (h5-C 5Me4CH2CH2ER 2) ZrCl2 (ER2 = NMe2, PMe2, PPh2) , (h5-C5Me4CH2 CH2PMe2) 2ZrCl 2, and (h5-C5Me4CH2 CH2PPh2) (h5-C 5Me4CH2CH2PMe 2) ZrCl2, together with the new types of intra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4dd463e9d9b1e7e59511155aa2a6e71f
https://doi.org/10.1351/pac200173020367

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Lithium 5-(2-diphenylphosphinoethyl)-1,2,3,4-tetramethylcyclopentadienide: Regioselectivity of alkylation of the tetramethylcyclopentadienide anion

Autor: Dmitrii P. Krut’ko, E. N. Veksler, E. M. Myshakin, Maxim V. Borzov, Dmitry A. Lemenovskii

Publikováno v: Russian Chemical Bulletin. 47:956-959

Treatment of a mixture of isomeric (2-chloroethyl)-1,2,3,4-tetramethylcyclopentadienes with lithium diphenylphosphide leads to novel 4,5,6,7-tetramethylspiro[2,4]hepta-4,6-diene among the reaction products. The reaction of spiroheptadiene obtained wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::19ddceb6d07ab9e5cdc838f5e29f031f
https://doi.org/10.1007/bf02498168

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