Modifying the reactivity in the homologation of propane by introducing aryloxide ligands on a silica supported zirconium alkyl system

Geoffroy Guillemot, Chloé Thieuleux*, Christophe Copéret, Daravong Soulivong, Stefan Spitzmesser, Jean-Marie Maurice Basset

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Grafting the well-defined molecular complexes [(ArO)Zr(CH 2tBu)3], 2, and [(ArO)2Zr(CH 2tBu)2], 3, on SiO2-(700) (ArO = 2,6-Ph 2C6H3O) gives the corresponding monosiloxy surface complexes [(≡SiO)Zr(CH2tBu)2(OAr)] and [(≡SiO)Zr(CH2tBu)(OAr)2] as major surface species as evidenced by mass balance analysis, IR and NMR spectroscopies. In both cases, minor cyclometallated species (ca. 20%) are also probably formed during the grafting process. While 2/SiO2-(700) catalytically transforms propane into its lower and higher homologues, 3/SiO2-(700) remains inactive. Moreover, the formation of butane as the major higher homologues is consistent with the formation of metallocarbene intermediates in this system in contrast to what was observed for the corresponding homologation reaction on silica supported zirconium hydrides.

Original languageEnglish (US)
Pages (from-to)4589-4593
Number of pages5
JournalDalton Transactions
Issue number40
DOIs
StatePublished - Oct 15 2007

ASJC Scopus subject areas

  • Inorganic Chemistry

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