Výsledky vyhledávání - "I. Sh. Guzman"

ESR spectra of47Ti-enriched titanium catalysts for polymerization

Autor: I. Sh. Guzman, V. V. Zakharov, V. F. Anufrienko, O. I. Adrov, A. V. Kucherov

Publikováno v: Reaction Kinetics & Catalysis Letters. 43:75-79

For the first time ESR spectra of47Ti-enriched Ziegler system Ti-TIBA in toluene have been studied. For the ratio Ti/Al∼1, more accurate h. f. s. constants have been found. For Ti/Al∼1/15 no h. f. s. have been observed, which is ascribed to order

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81ed27f43955c36720371cfdd2b6156f
https://doi.org/10.1007/bf02075415

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Some peculiarities in ESR spectra of titanium complexes in catalysts for isoprene polymerization in excess A1R3

Autor: V. V. Zakharov, I. Sh. Guzman, A. V. Kucherov, T. F. Filatova, V. F. Anufrienko, O. I. Adrov

Publikováno v: Reaction Kinetics & Catalysis Letters. 42:107-112

It has been established that at low temperatures of TiCl4+AOC catalyst preparation in solution (with Ti/Al∼1/15), ESR spectra exhibit rhombic anisotropy of the g-factor. Experiments with the sample having 61 % concentration of47Ti isotopes suggest

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d40682e31d60f26a11453f386308fe00
https://doi.org/10.1007/bf02137625

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Vibrational spectroscopic study of the structure of Ti(III) organometallic compounds

Autor: I. Sh. Guzman, E. I. Tinyakova, S. B. Sverchinskaya, Galina N. Bondarenko, G. A. Dolgoplosk

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 36:2536-2539

A full interpretation was carried out for the vibrational spectra of TiR3, where R= -CH2C6H5, -CH2C(CH3)2C6H5, and-CH2Si(CH3)3. The absorption bands for the Ti-C bonds were delineated. A dimeric structure was established for the compounds studied wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5217cf9d25e7ebb9513db8aa585e66c4
https://doi.org/10.1007/bf00957228

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Polymerization of monomers containing chlorine by the action of organic transition metal compounds

Autor: N.N. Chigir, I. Sh. Guzman, O.K. Sharayev, E.N Zavadovskaya, Ye.I. Tinyakova, B. A. Dolgoplosk

Publikováno v: Polymer Science U.S.S.R.. 19:3225-3232

A study was made of polymerization of chloroprene, 2,3-dichlorobutadiene and vinylchloride by the action of organometallic compounds of titanium, nickel, chromium and vanadium with a σ- or π-allyl bond of metal-carbon. Polymerization of chloroprene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c7094cb7754af2fe92de2d270cab8e9
https://doi.org/10.1016/0032-3950(77)90227-1

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Formation of organometallic compounds of carbene and carbine types by the interaction of RLi with neodymium and yttrium chlorides in various media

Autor: I. Sh. Guzman, E. I. Tinyakova, N.N. Chigir, E.L. Vollerstein, B. A. Dolgoplosk, V. A. Yakovlev, Galina N. Bondarenko, O. K. Sharaev

Publikováno v: Journal of Organometallic Chemistry. 201:249-255

It has been established that in the interaction of NdCl 3 and YCl 3 with RLi, where R  CH 2 C 6 H 5 , CH 2 C(CH 3 ) 2 C 6 H 5 , CH 2 Si(CH 3 ) 3 , unusual organometallic compounds are formed. They are stable in hydrocarbon solutions. The benzyl an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e86ad874275ed903cab4f38db8282d6
https://doi.org/10.1016/s0022-328x(00)92580-4

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Nature of the active centres in butadiene polymerization in the presence of TiR3 compounds

Autor: I. Sh. Guzman, Ye.I. Tinyakova, L.L. Afinogenova, B. A. Dolgoplosk, S.P. Smerkin

Publikováno v: Polymer Science U.S.S.R.. 27:2902-2909

The efficiency and stereoregularity of the action of benzyl and alkenyl derivatives of trivalent titanium in the polymerization of butadiene has been investigated. The resulting polymers were found to consist mainly of 1,2-units. Moreover it was foun

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e49090eeb2870d2f61280a93ab42611
https://doi.org/10.1016/0032-3950(85)90535-0

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The nature of active sites in butadiene polymerization catalyzed by organotitanium(III) derivatives

Autor: L.L. Afinogenova, B. A. Dolgoplosk, E. I. Tinyakova, I. Sh. Guzman

Publikováno v: Journal of Polymer Science: Polymer Chemistry Edition. 22:1535-1540

The stereospecificity of benzyl derivatives of trivalent titanium (Rn TiX3–n, where X = Cl, I, n = 1–3) in butadiene polymerization was studied. It was found that dibenzyltitaniumiodide is an efficient catalyst of the 1,4-cis-polymerization of bu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c5566115ce240ba96c8934ca612bbbe
https://doi.org/10.1002/pol.1984.170220701

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Nature of active centers and stereospecificity of tetravalent titanium benzyl derivatives in polymerization of butadiene

Autor: B. A. Dolgoplosk, I. Sh. Guzman, E. I. Tinyakova, O. K. Sharaev, N.N. Chigir

Publikováno v: European Polymer Journal. 11:829-832

Stereospecificity of tetrabenzyltitanium and its halogeno-derivatives in the polymerization of butadiene has been investigated. The content of 1,2-units decreases while the content of 1,4- cis -units increases in the resulting polybutadiene for the s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f55cb950964867f9ecc18b5d8bf1a317
https://doi.org/10.1016/0014-3057(75)90083-x

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