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A remarkable inversion of structure-activity dependence on imido N-substituents with varying co-ligand topology and the synthesis of a new borate-free zwitterionic polymerisation catalyst.

Abstract:
Ethylene polymerisation productivities of tris(pyrazolyl)methane-supported catalysts [Ti(NR){HC(Me2pz)3}Cl2] show a dramatically different dependence on the imido R-group compared to those of their TACN analogues, attributed to differences in fac-N3 donor topology; when treated with AliBu3, the zwitterionic tris(pyrazolyl)methide compound [Ti(N-2-C6H4tBu){C(Me2pz)3}Cl(THF)] also acts as a highly active, single site catalyst (TACN = 1,4,7-trimethyltriazacyclononane).
Publication status:
Published

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Publisher copy:
10.1039/b514467a

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Journal:
Chemical communications (Cambridge, England)
Issue:
4
Pages:
436-438
Publication date:
2006-01-05
DOI:
EISSN:
1364-548X
ISSN:
1359-7345
URN:
uuid:9d320cd6-7c77-4d82-9713-a8790416f3fb
Source identifiers:
51050
Local pid:
pubs:51050

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