P-H functionalised phosphinoalkoxides as ligands: Synthesis and catalytic properties of [Cp2Zr(Me)(cyclo-1-O-2-PH(Tipp)-C6H10)] (Tipp=2,4,6-Pri3C6H2), [Cp2Zr(Me)(cyclo-1-O-2-PH(Tipp){Mo(CO)5}-C 6H10)] and Cp2Zr(BH4) [Cp2Zr(BH4).

Thomas Koch*, Steffen Blaurock, Evamarie Hey-Hawkins, Mercedes Galan-Fereres, Dorit Plat, Moris S. Eisen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The P-H functionalised phosphinoalcohol 1-PH(Tipp)-2-OH-cyclo-C6H10 (Tipp=2,4,6-Pri3C6H2) reacts with [Cp2ZrMe2] with elimination of methane to give exclusively the mono-substituted product [Cp2Zr(Me)(cyclo-1-O-2-PH(Tipp)-C6H10)] (1), even at elevated temperature. 1 reacts with [Mo(CO)5(NMe3)] to give the heterodinuclear complex [Cp2Zr(Me)(cyclo-1-O-2-PH(Tipp){Mo(CO)5}-C 6H10)] (2). The borane adduct [Cp2Zr(BH4)(cyclo-1-O-2-PH(Mes)(BH3)-C 6H10)] (3, Mes=2,4,6-Me3C6H2) was obtained from [Cp2Zr(BH4)2] and 1-PH(Mes)-2-OH-cyclo-C6H10 in boiling hexane. 1-3 were characterised spectroscopically (1H, 13C, 31P, 11B (for 3), MS, and IR). A crystal structure determination of the RC,RC,RP/SC,SC,S P isomer of 1 was obtained. The complexes 1-3 were studied in the catalytic polymerisation of ethylene and propylene by activating them with methylalumoxane (MAO) as cocatalyst.

Original languageEnglish
Pages (from-to)126-133
Number of pages8
JournalJournal of Organometallic Chemistry
Volume595
Issue number1
DOIs
StatePublished - 31 Jan 2000
Externally publishedYes

Keywords

  • Borane adduct
  • Heterodinuclear molybdenum phosphine complex
  • P-H functionalised phosphinoalkoxide
  • Zirconocene complex

Fingerprint

Dive into the research topics of 'P-H functionalised phosphinoalkoxides as ligands: Synthesis and catalytic properties of [Cp<sub>2</sub>Zr(Me)(cyclo-1-O-2-PH(Tipp)-C<sub>6</sub>H<sub>10</sub>)] (Tipp=2,4,6-Pr<sup>i</sup><sub>3</sub>C<sub>6</sub>H<sub>2</sub>), [Cp<sub>2</sub>Zr(Me)(cyclo-1-O-2-PH(Tipp){Mo(CO)<sub>5</sub>}-C <sub>6</sub>H<sub>10</sub>)] and Cp<sub>2</sub>Zr(BH<sub>4</sub>) [Cp<sub>2</sub>Zr(BH<sub>4</sub>).'. Together they form a unique fingerprint.

Cite this