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https://olympias.lib.uoi.gr/jspui/handle/123456789/8910Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Bokaris, E. P. | en |
| dc.contributor.author | Kosmas, M. M. | en |
| dc.date.accessioned | 2015-11-24T16:45:18Z | - |
| dc.date.available | 2015-11-24T16:45:18Z | - |
| dc.identifier.issn | 1381-1169 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/8910 | - |
| dc.rights | Default Licence | - |
| dc.subject | ring-opening metathesis | en |
| dc.subject | norbornene | en |
| dc.subject | tungsten chloride | en |
| dc.subject | alkyl lithium | en |
| dc.subject | cis-stereoselectivity | en |
| dc.subject | opening metathesis polymerization | en |
| dc.subject | trans-double-bond | en |
| dc.subject | olefin metathesis | en |
| dc.subject | system | en |
| dc.subject | cycloalkenes | en |
| dc.subject | complexes | en |
| dc.subject | mechanism | en |
| dc.title | All cis-poly(NBE) derived by the ROMP catalysts based on WCl6 | en |
| heal.type | journalArticle | - |
| heal.type.en | Journal article | en |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.identifier.primary | Doi 10.1016/S1381-1169(02)00445-4 | - |
| heal.identifier.secondary | <Go to ISI>://000180678800024 | - |
| heal.identifier.secondary | http://ac.els-cdn.com/S1381116902004454/1-s2.0-S1381116902004454-main.pdf?_tid=0074f90a-5b3d-11e3-870c-00000aab0f6b&acdnat=1385980511_9a52ed75cf382a8bd582dfe39b4abdde | - |
| heal.language | en | - |
| heal.access | campus | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.publicationDate | 2003 | - |
| heal.abstract | The ring-opening polymerization of bicyclo[2.2.1]-hept-2-ene (norbornene, NBE) is carried out with the metathesis catalysts WCl6/RLi, where R = Me-, n-Bu-, sec-Bu-, tert-Bu-, sec-Bu-x-C-60(x-), sec-Bu-CH2-C(Ph)(2)(-), PS-. The bulkiness of the R chain of the co-catalyst, combined with the coordination of side substituents of R chain on the metal, increases the degree of cis-stereoselectivity of poly(NBE), beyond those of the systems based on WCl6 which are of intermediate cis-content. The range of the fraction of cis-double bonds varies from sigma(c) = 0.47 to an all-cis-polymer (sigma(c) = 0.96), and all the polymers derived exhibited a blocky distribution (r(c)r(t) > 1) of the double-bond dyads. In case of R = PS- an all-cis-poly(NBE) was formed. The observed order for the cis-stereoselectivity is: PS- > sec-Bu-CH2-C(Ph)(2)(-) > sec-Bu- > tert-Bu- > n-Bu- > sec-Bu-x-C-60(x-) > Me- (C) 2002 Elsevier Science B.V. All rights reserved. | en |
| heal.publisher | Elsevier | en |
| heal.journalName | Journal of Molecular Catalysis a-Chemical | en |
| heal.journalType | peer reviewed | - |
| heal.fullTextAvailability | TRUE | - |
| Appears in Collections: | Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Bokaris-2003-All cis-poly(NBE) de.pdf | 174.4 kB | Adobe PDF | View/Open Request a copy |
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