Bidentate phosphorus baskets by intramolecular phosphinidene addition

Sander G.A. Van Assema, Andreas W. Ehlers, Frans J.J. De Kanter, Marius Schakel, Anthony L. Spek, Martin Lutz, Koop Lammertsma

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Intramolecular phosphinidene addition to the C=C bond of Mo-complexed, seven-membered phosphorus heterocycles affords three novel [(diphos)Mo(CO) 4] complexes (18-20). The three bidentate phosphorus baskets differ in the composition of the seven-membered ring: one of the phosphorus atoms is flanked by CH2. NCH3- or O. The unsaturated tetrahydrophosphepine precursors are synthesized by either ring-closing metathesis (C and N derivatives) or by a cyclization sequence (O derivative). The crystal structures of the nitrogen- (19) and oxygen-containing (20) baskets have relatively small P-Mo-P angles of 76.240(13)° and 77.626(12)°, respectively, and complex 20 has slightly shortened Mo-P bond lengths.

Original languageEnglish
Pages (from-to)4333-4340
Number of pages8
JournalChemistry - A European Journal
Issue number16
Publication statusPublished - 24 May 2006
Externally publishedYes


  • Cage compounds
  • Molybdenum
  • P ligands
  • Phosphinidene complexes
  • Phosphorus heterocycles

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry


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