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Molybdenum alkynyls as alkynyl transfer reagents
Julio Pérez1, Lucía Riera, Víctor Riera
1Departamento de Química Orgánica e Inorgánica/I.U.Q.O.E.M, Facultad de Quínica, Universidad de Oviedo-C.S.I.C 33071, Oviedo, Spain.
Chemical Communications (Cambridge, England)
|July 18, 2002
Summary
Molybdenum alkynyl complexes exhibit long Mo-C bonds, facilitating bond cleavage. This characteristic enables their application as effective acetylide transfer reagents in chemical synthesis.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
Background:
- Molybdenum complexes with alkynyl ligands are of interest due to their unique bonding and reactivity.
- Understanding the structural and electronic properties of these complexes is crucial for developing new synthetic methodologies.
Purpose of the Study:
- To investigate the structural features and reactivity of molybdenum alkynyl complexes.
- To explore the potential of these complexes as acetylide transfer reagents.
Main Methods:
- Synthesis and characterization of molybdenum alkynyl complexes.
- Structural analysis using X-ray crystallography.
- Reactivity studies involving bond cleavage and acetylide transfer.
Main Results:
- The synthesized molybdenum alkynyl complexes, [Mo(C≡CR)(η³-allyl)(CO)₂(phen)], display notably long molybdenum-to-alkynyl carbon bond distances.
- These complexes demonstrate a propensity for facile cleavage of the Mo-Calkynyl bond.
- The observed bond cleavage property was successfully utilized in acetylide transfer reactions.
Conclusions:
- The long Mo-Calkynyl bond in these complexes is a key feature governing their reactivity.
- Molybdenum alkynyl complexes serve as effective reagents for transferring alkynyl groups in organic synthesis.
- This work expands the utility of organometallic complexes in synthetic chemistry.