| Attributes | Values |
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| rdf:type
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| Description
| - Complexes [Rh(nbd)(acac)], [Rh(cod)(acac)] and [Rh(cot)(acac)] (nbd = norborna-2,5-diene,cod = cycloocta-1,5-diene, cot = cyclooctatetraene) were investigated as catalysts of polymerizationof monosubstituted acetylenes into stereoregular cis-transoid poly(monosubstituted acetylene)s. Allcomplexes (without cocatalyst) are highly active in phenylacetylene (PhA) polymerization in bothcoordinating (THF) and non-coordinating (CH2Cl2) solvents. [Rh(cot)(acac)] prepared in situ by ligandsubstitution in [Rh(ethylene)2(acac)] with cot is efficient in PhA polymerization even in systems witha high cot content. Selection of solvent and cycloolefin ligand of the catalyst allows the control overpoly(phenylacetylene) molecular weight (Mw= 3 104to 4 105). [Rh(nbd)(acac)] exhibit (moderate)activity also in polymerization of alkylacetylenes (alkyl = n-butyl, tert-butyl, 4-chlorobutyl, cyclopropyl,yields up to 28%, Mwup to 7.3 104) and in copolymerization of alkylacetylenes with arylacetylenes.In situ1H NMR monitoring of polymerization systems revealed monomer-assisted transformation of[Rh(cycloolefin)(acac)] complexes into precursors of polymerization centres consisting in proton transferfrom the monomer to acac ligand of the catalyst under release of acetylacetone. [Rh(cycloolefin)(acac)]catalysts thus differ from the widely used [Rh(nbd)Cl]2catalyst which is transformed into active centresprecursors only in reaction with cocatalyst or a molecule of coordinating solvent and which is efficientonly in presence of a proper cocatalyst and/or coordinating solvent.
- Complexes [Rh(nbd)(acac)], [Rh(cod)(acac)] and [Rh(cot)(acac)] (nbd = norborna-2,5-diene,cod = cycloocta-1,5-diene, cot = cyclooctatetraene) were investigated as catalysts of polymerizationof monosubstituted acetylenes into stereoregular cis-transoid poly(monosubstituted acetylene)s. Allcomplexes (without cocatalyst) are highly active in phenylacetylene (PhA) polymerization in bothcoordinating (THF) and non-coordinating (CH2Cl2) solvents. [Rh(cot)(acac)] prepared in situ by ligandsubstitution in [Rh(ethylene)2(acac)] with cot is efficient in PhA polymerization even in systems witha high cot content. Selection of solvent and cycloolefin ligand of the catalyst allows the control overpoly(phenylacetylene) molecular weight (Mw= 3 104to 4 105). [Rh(nbd)(acac)] exhibit (moderate)activity also in polymerization of alkylacetylenes (alkyl = n-butyl, tert-butyl, 4-chlorobutyl, cyclopropyl,yields up to 28%, Mwup to 7.3 104) and in copolymerization of alkylacetylenes with arylacetylenes.In situ1H NMR monitoring of polymerization systems revealed monomer-assisted transformation of[Rh(cycloolefin)(acac)] complexes into precursors of polymerization centres consisting in proton transferfrom the monomer to acac ligand of the catalyst under release of acetylacetone. [Rh(cycloolefin)(acac)]catalysts thus differ from the widely used [Rh(nbd)Cl]2catalyst which is transformed into active centresprecursors only in reaction with cocatalyst or a molecule of coordinating solvent and which is efficientonly in presence of a proper cocatalyst and/or coordinating solvent. (en)
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| Title
| - [Rh(cycloolefin)(acac)] complexes as catalysts of polymerization of aryl- and alkylacetylenes: Influence of cycloolefin ligand and reaction conditions
- [Rh(cycloolefin)(acac)] complexes as catalysts of polymerization of aryl- and alkylacetylenes: Influence of cycloolefin ligand and reaction conditions (en)
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| skos:prefLabel
| - [Rh(cycloolefin)(acac)] complexes as catalysts of polymerization of aryl- and alkylacetylenes: Influence of cycloolefin ligand and reaction conditions
- [Rh(cycloolefin)(acac)] complexes as catalysts of polymerization of aryl- and alkylacetylenes: Influence of cycloolefin ligand and reaction conditions (en)
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| skos:notation
| - RIV/61388955:_____/13:00393308!RIV14-GA0-61388955
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/13:00393308
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - catalysis; conjugated polymers; rhodium complexes (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| |
| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Journal of Molecular Catalysis A-Chemical
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Sedláček, J.
- Balcar, Hynek
- Brus, Jiří
- Trhlíková, O.
- Zednik, J.
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| http://linked.open...ain/vavai/riv/wos
| |
| issn
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| number of pages
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| http://bibframe.org/vocab/doi
| - 10.1016/j.molcata.2013.05.022
|
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