Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Janne Maaranen"'
Autor:
John Severn, Esa Kokko, Päivi Pitkänen, Tapani A. Pakkanen, Janne Maaranen, Anneli Pakkanen, Mikko Linnolahti, Virve A. Karttunen
Publikováno v:
Journal of Organometallic Chemistry. 693:3915-3922
Ligand effects on chain termination reactions in hafnocene-catalyzed ethene polymerization process have been systematically studied by quantum chemical methods. β-hydrogen transfer to metal, β-hydrogen transfer to monomer and hydrogenolysis were st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e90a4f9547ecc9f07fe2d70e7c2fca05
https://doi.org/10.1016/j.jorganchem.2008.09.070
https://doi.org/10.1016/j.jorganchem.2008.09.070
Autor:
Päivi Pitkänen, Janne Maaranen, Virve A. Karttunen, John Severn, Esa Kokko, Mikko Linnolahti, Tapani A. Pakkanen
Publikováno v:
Organometallics. 27:3390-3398
The influence of the ligand structures of hafnocene polymerization catalysts on ethene insertion and chain propagation was systematically studied by quantum chemical methods. Altogether 54 hafnocenes were studied as a function of the ligand structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c95d563949e263e39c7a190efa639e33
https://doi.org/10.1021/om800050d
https://doi.org/10.1021/om800050d
Autor:
Virve A. Karttunen, John Severn, Tapani A. Pakkanen, Anniina Turunen, Janne Maaranen, Päivi Pitkänen, Esa Kokko, Mikko Linnolahti
Publikováno v:
Journal of Organometallic Chemistry. 693:155-163
The influence of ligand structure of hafnocenes on activation of the polymerization catalysts has been studied by quantum chemical methods. Altogether 54 hafnocenes were included in the analysis, supplemented by four zirconocenes for comparison. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99a6f7a245579188f4fcf0954125159f
https://doi.org/10.1016/j.jorganchem.2007.10.037
https://doi.org/10.1016/j.jorganchem.2007.10.037
Publikováno v:
Theoretical Chemistry Accounts. 118:899-913
The performance of quantum chemical methods for geometry prediction of hafnocenes was evaluated. HF, B3LYP and MP2 in combination with nonrelativistic (MHF) and relativistic (MWB and LANL2DZ) basis sets for hafnium together with standard basis sets 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::457b429407cf10daccdef394fcb9a8cf
https://doi.org/10.1007/s00214-007-0375-6
https://doi.org/10.1007/s00214-007-0375-6
Publikováno v:
Macromolecular Chemistry and Physics. 208:851-861
Six (Cp)(4-phenyl-indenyl)MCl2 (A) and four (Cp)(1-phenyl-indenyl)MCl2 (C) (M=Zr/Hf) based complexes were tested in ethene homo- and copolymerisation under different conditions to explain how the differences in the complex structure affect the polyme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::654b30cd6c50092093bf53e6f8aed888
https://doi.org/10.1002/macp.200600595
https://doi.org/10.1002/macp.200600595
Publikováno v:
Journal of Organometallic Chemistry. 691:240-246
The reaction of 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2a]pyrimidinyl potassium, [hpp]−K+ (1), with dimethyldichlorosilane, diphenyldichlorosilane or cyclotetramethylenedichlorosilane (1,1-dichloro silolane) in THF resulted in the formation of the in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a47e22aad6983248326929a0767a70c
https://doi.org/10.1016/j.jorganchem.2005.09.002
https://doi.org/10.1016/j.jorganchem.2005.09.002
Publikováno v:
Journal of Organometallic Chemistry. 691:122-130
Bis-(1,2-(RMe2SiO)2)ZrCl2 complexes with R = Me-(5a), iPr-(5b) and tBu-(5c) have been synthesised in good yields and characterised. Compounds 5a–c are the first synthesised examples of multi-siloxy-substituted cyclopentadienyl metallocenes. The sil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9390c65663bb64a8f0a886832288491c
https://doi.org/10.1016/j.jorganchem.2005.08.029
https://doi.org/10.1016/j.jorganchem.2005.08.029
Publikováno v:
Acta Crystallographica Section E Structure Reports Online. 63:m238-m240
The title compound, [Hf(C22H20Si)Cl2], was solved by simulated annealing from laboratory X-ray powder diffraction data collected at room temperature. The molecular structure comprises a hafnium dichloride centre, coordinated by a η5-cyclopenta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05b107d3db7cd90449b422b0ee694e6d
https://doi.org/10.1107/s1600536806051269
https://doi.org/10.1107/s1600536806051269
Autor:
Virve A. Karttunen, Mikko Linnolahti, Tapani A. Pakkanen, John R. Severn, Esa Kokko, Janne Maaranen, Päivi Pitkänen
Publikováno v:
Organometallics; Jun2008, Vol. 27 Issue 14, p3390-3398, 9p