Group-13 carbenoid ligands at tungsten: Coordination and C-H activation

Mariusz Molon, Christian Gemel, Roland A. Fischer

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Reactions of zero valent tungsten complexes with AlCp* and GaCp* (Cp* = pentamethylcyclopentadienyl) are presented. The treatment of [W(C2H4)2(PMe3) 4] with 2 equiv of GaCp* or AlCp* leads to the formation of cis-[W(GaCp*)2(PMe3)4] (1) or trans, cis, cis-[W(AlCp*)2(C2H4) 2(PMe3)2] (2) under cleavage of ethylene or PMe3 ligands, respectively. Treatment of either [W(C 2H4)2(PMe3)4] or 2 with 4 or 6 equiv of AlCp* leads to the C-H activated species of over-all composition [W(AlCp*)6(C2H4)2] (3), which features terminal W-Has well as bridging W-H-Al hydride ligands and C-H activated C2H4 resulting in Al-C bonds. All new compounds are characterized by solution NMR, IR, elemental analyses (EA), liquid injection field desorption ionization mass spectrometry (LIFDI-MS) as well as single crystal x-ray crystallography.

Original languageEnglish
Pages (from-to)573-578
Number of pages6
JournalJournal of Organometallic Chemistry
Volume751
DOIs
StatePublished - 1 Feb 2014
Externally publishedYes

Keywords

  • Aluminium
  • C-H activation
  • Coordination
  • Gallium
  • Indium
  • Tungsten

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