Early Transition Metal Permethylpentalene Complexes for the Polymerization of Ethylene
A series of group 4 permethylpentalene-cyclopentadiene mixed sandwich complexes have been synthesized including the mono- and bis-cyclopentadienyl derivatives Pn*MCp2-xClx (Pn* = η8-C8Me6, M = Ti, Zr, Hf, x = 0, 1) and the monopentamethylcyclopentadienyl species Pn*MCpCl (Pn* = η8-C8Me6, M = Ti, Zr,...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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American Chemical Society
2014
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| _version_ | 1826289201231953920 |
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| author | Chadwick, F Cooper, RT Ashley, A Buffet, J O'Hare, D |
| author_facet | Chadwick, F Cooper, RT Ashley, A Buffet, J O'Hare, D |
| author_sort | Chadwick, F |
| collection | OXFORD |
| description | A series of group 4 permethylpentalene-cyclopentadiene mixed sandwich complexes have been synthesized including the mono- and bis-cyclopentadienyl derivatives Pn*MCp2-xClx (Pn* = η8-C8Me6, M = Ti, Zr, Hf, x = 0, 1) and the monopentamethylcyclopentadienyl species Pn*MCpCl (Pn* = η8-C8Me6, M = Ti, Zr, and Hf). The compounds were all characterized via a range of techniques including single crystal X-ray diffraction allowing for comparison of trends descending the group as well as the effect of permethylation of the cyclopentadienyl moiety. The complexes have been tested for their efficacy as catalysts for the solution polymerization of ethylene, and Pn*ZrCpCl was found to give the highest activity of 6993 kg mol-1 h-1 bar-1 at 80 °C with a [MAO]0/[Zr]0 ratio of 1000 and 2 bar pressure of ethylene gas in hexane. © 2014 American Chemical Society. |
| first_indexed | 2024-03-07T02:25:17Z |
| format | Journal article |
| id | oxford-uuid:a55f9912-6849-4910-95cb-8156e6217374 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:25:17Z |
| publishDate | 2014 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:a55f9912-6849-4910-95cb-8156e62173742022-03-27T02:40:04ZEarly Transition Metal Permethylpentalene Complexes for the Polymerization of EthyleneJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a55f9912-6849-4910-95cb-8156e6217374EnglishSymplectic Elements at OxfordAmerican Chemical Society2014Chadwick, FCooper, RTAshley, ABuffet, JO'Hare, DA series of group 4 permethylpentalene-cyclopentadiene mixed sandwich complexes have been synthesized including the mono- and bis-cyclopentadienyl derivatives Pn*MCp2-xClx (Pn* = η8-C8Me6, M = Ti, Zr, Hf, x = 0, 1) and the monopentamethylcyclopentadienyl species Pn*MCpCl (Pn* = η8-C8Me6, M = Ti, Zr, and Hf). The compounds were all characterized via a range of techniques including single crystal X-ray diffraction allowing for comparison of trends descending the group as well as the effect of permethylation of the cyclopentadienyl moiety. The complexes have been tested for their efficacy as catalysts for the solution polymerization of ethylene, and Pn*ZrCpCl was found to give the highest activity of 6993 kg mol-1 h-1 bar-1 at 80 °C with a [MAO]0/[Zr]0 ratio of 1000 and 2 bar pressure of ethylene gas in hexane. © 2014 American Chemical Society. |
| spellingShingle | Chadwick, F Cooper, RT Ashley, A Buffet, J O'Hare, D Early Transition Metal Permethylpentalene Complexes for the Polymerization of Ethylene |
| title | Early Transition Metal Permethylpentalene Complexes for the Polymerization of Ethylene |
| title_full | Early Transition Metal Permethylpentalene Complexes for the Polymerization of Ethylene |
| title_fullStr | Early Transition Metal Permethylpentalene Complexes for the Polymerization of Ethylene |
| title_full_unstemmed | Early Transition Metal Permethylpentalene Complexes for the Polymerization of Ethylene |
| title_short | Early Transition Metal Permethylpentalene Complexes for the Polymerization of Ethylene |
| title_sort | early transition metal permethylpentalene complexes for the polymerization of ethylene |
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