Výsledky vyhledávání - "Roman Olejník"

Zinc complexes chelated by bifunctional ketiminate ligands: Structure, reactivity and possible applications in initiation of ROP and copolymerization of epoxides with carbon dioxide

Autor: Zdeněk Hošt’álek, Roman Olejník, Aleš Růžička, Jan Merna, Zdeňka Růžičková, Michal Bílek

Publikováno v: Journal of Organometallic Chemistry. 794:237-246

Bifunctional ketiminate zinc complexes were synthesized via alkyl or LiCl elimination route from appropriate zinc species (ZnCl2 or ZnEt2) and methoxyaryl substituted monoanionic ketimine {[2- or 3- or 4-(MeO)C6H4]}N(H)C(Me)=CHC(Me)=O. Homo- or heter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b396b90786eeeb80509ee498419378c
https://doi.org/10.1016/j.jorganchem.2015.07.001

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Highly substituted zirconium and hafnium cyclopentadienyl bifunctional β-diketiminate complexes – Synthesis, structure, and catalytic activity towards ethylene polymerization

Autor: Vojtech Varga, Aleš Havlík, Martin Lamač, Roman Olejník, Aleš Růžička, Michal Horáček, Jiří Pinkas

Publikováno v: Journal of Organometallic Chemistry. 786:71-80

A series of tetramethyl-(Cp′) and pentamethylcyclopentadienyl (Cp*) metal complexes (η5-C5Me4R)ZrCl2LCO (R = H(1), Me(2)) and (η5-C5Me4R)HfCl2LCO (R = H(3), Me(4)) where LCO is a bifunctional β-diketiminate ligand [2-(MeO)–C6H4)]NC(Me)CHC(Me)N

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84933ab838ed298e8c4851810716030c
https://doi.org/10.1016/j.jorganchem.2015.03.014

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Methoxyaryl substituted aluminum ketiminate complexes and its activity in ring opening polymerization processes

Autor: Roman Olejník, Jan Merna, Zdeňka Růžičková, Jana Bažantová, Zdeněk Hošťálek, Aleš Růžička

Publikováno v: Inorganic Chemistry Communications. 55:161-164

The synthesis of dimethyl aluminum (LoAlMe2) and chloromethyl aluminum (LoAlMeCl) complexes containing ketiminate ligand [(2-MeO)C6H4]N(H)C(Me) = CHC(Me) = O (LoH) is reported along with the preparation of Lo3Al from LoH and LiAlH4, and ionic [Lo′A

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a8fcd7d2e474c6ff0ef9402ed43f41c
https://doi.org/10.1016/j.inoche.2015.03.039

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Tetrylenes chelated by bifunctional β‐diketiminate ligand: structure and possible applications

Autor: Jan Merna, Zdeňka Padělková, Aleš Růžička, Robert Mundil, Roman Olejník

Publikováno v: Applied Organometallic Chemistry. 28:405-412

The synthesis and structure of heteroleptic tetrylenes containing bifunctional β-diketiminate ligand are reported. Compounds were prepared via a protolytic reaction of free β-diketimine {N-[(2-MeO)C6H5]}N═C(Me)CH═C(Me)N(H){N′-[(2-MeO)C6H5]} (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3f21c444404bd123db3c3d4099159cf
https://doi.org/10.1002/aoc.3141

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Additivity of Interligand Substituent Effects for the Isoelectronic [(η5-C6H7)Fe(η6-MenC6H6–n)]+ and [(η5-C5H5)Fe(η6-MenC6H6–n)]+ Sandwich Cations

Autor: Roman Olejník, Jan Turek, Bohumil Štíbr

Publikováno v: Organometallics. 33:2898-2901

Complete assignments of chemical shifts in the 1H and 13C NMR spectra for a contiguous series of [(η5-C6H7)Fe(η6-MenC6H6–n)]+ and [(η5-C5H5)Fe(η6-MenC6H6–n)]+ cations (where n = 0–6) are reported. ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3cf1a138cd82deb1bae15152b2514768
https://doi.org/10.1021/om500165w

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C,N-chelated organotin(IV) trifluoromethanesulfonates: Synthesis, characterization and preliminary studies of its catalytic activity in the direct synthesis of dimethyl carbonate from methanol and CO2

Autor: Petr Švec, Laurent Plasseraud, Aleš Růžička, Zdeňka Padělková, Roman Olejník

Publikováno v: Journal of Organometallic Chemistry. :82-87

C,N-chelated tri- and diorganotin(IV) halides react with 1 or 2 mol equiv of silver trifluoromethanesulfonate (triflate, AgOTf, OTf = OSO2CF3−) to give corresponding C,N-chelated organotin(IV) triflates. The triorganotin(IV) triflates of general fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5680a93cb0c4a7531622ff52b0c53fb
https://doi.org/10.1016/j.jorganchem.2012.02.022

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Combined NMR and DFT Study on the Complexation Behavior of Lappert’s Tin(II) Amide

Autor: Paul Geerlings, Monique Biesemans, Rudolph Willem, Lies Broeckaert, Jan Turek, Aleš Růžička, Roman Olejník, Frank De Proft

Publikováno v: Vrije Universiteit Brussel

The complexation chemistry of the stannylene Sn{N[Si(CH3)3]2}2, first reported by Lappert in the 1970s, was investigated by 119Sn NMR chemical shift measurements. To this end, experimental NMR data...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d0bf8d36b07724636c1475231ece486
https://biblio.vub.ac.be/vubir/combined-nmr-and-dft-study-on-the-complexation-behavior-of-lapperts-tinii-amide(25c2de88-3ab3-4c47-950e-1de2f13a37f8).html

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Tetrylenes chelated by hybrid amido-amino ligand: derivatives of 2-[(N,N-dimethylamino)methyl]aniline

Autor: Jan Turek, Zdeňka Padělková, Frank De Proft, Hana Vaňkátová, Aleš Růžička, Lies Broeckaert, Roman Olejník

Publikováno v: Vrije Universiteit Brussel

Reaction of 2-[(dimethylamino)methyl]aniline with butyllithium, followed by conversion with triinethylsilyl, triphenylsilyl, triphenylgermyl, trimethylstannyl, or tri-n-butyl-stannyl chloride, gives the corresponding substituted aniline. These compou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1334111dcf7edb2f17e6af14d6df7120
https://pubmed.ncbi.nlm.nih.gov/21902188

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