Abstract
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 language | English |
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Pages (from-to) | 4333-4340 |
Number of pages | 8 |
Journal | Chemistry - A European Journal |
Volume | 12 |
Issue number | 16 |
DOIs | |
Publication status | Published - 24 May 2006 |
Externally published | Yes |
Keywords
- Cage compounds
- Molybdenum
- P ligands
- Phosphinidene complexes
- Phosphorus heterocycles
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry