Synthesis and coordination of the new chiral tridentate O,N,O ligand2,6-[bis[(1S,2S,5R)-(-)-menthyl]pyridine to molybdenum(VI) andvanadium(V) oxo complexes: Crystal structures of [(2,6-bis{(-)-menthyl}pyridine)MoO2] and [(2,6-bis{(-)-menthyl}pyridine)VO](

Bellemin-Laponnaz, S; Coleman, KS; Dierkes, P; Masson, JP; Osborn, JA

Abstract

The novel tridentate chiral ligand 2,6-bis{(-)-menthyl)pyridine (1), was readily prepared from the reaction of 2,6-dilithiopyridine with (-)-menthone. Reaction of 1 with VO(OiPr)(3) and [MoO2(acac)(2)] resulted in the formation of the new metal-ore complexes [VO(ONO)](2)(mu-O) (2) and [MoO2(ONO)] (3) [ONO = (1 - 2 H)]. Both metal-ore compounds 2 and 3 have demonstrated the ability to catalyze the asymmetric oxidation of prochiral olefins with tBuOOH as the oxidant. The compounds 1-3 have been fully characterized by H-1, C-13 and V-51 (where appropriate) NMR spectroscopy, mass spectrometry, microanalysis and IR spectroscopy. Furthermore, the molecular structures of 2 and 3 have been determined by single-crystal X-ray diffraction.

Citation

Bellemin-Laponnaz, S., Coleman, K., Dierkes, P., Masson, J., & Osborn, J. (2000). Synthesis and coordination of the new chiral tridentate O,N,O ligand2,6-[bis[(1S,2S,5R)-(-)-menthyl]pyridine to molybdenum(VI) andvanadium(V) oxo complexes: Crystal structures of [(2,6-bis{(-)-menthyl}pyridine)MoO2] and [(2,6-bis{(-)-menthyl}pyridine)VO](. European Journal of Inorganic Chemistry, 1645-1649. https://doi.org/10.1002/1099-0682%28200007%292000%3A7%3C1645%3A%3Aaid-ejic1645%3E3.0.co%3B2-h

• Journal Article Type: Article
• Publication Date: 2000-07
• Journal: European Journal of Inorganic Chemistry
• Print ISSN: 1434-1948
• Electronic ISSN: 1099-0682
• Publisher: Wiley-VCH Verlag
• Peer Reviewed: Peer Reviewed
• Issue: 7
• Pages: 1645-1649
• DOI: https://doi.org/10.1002/1099-0682%28200007%292000%3A7%3C1645%3A%3Aaid-ejic1645%3E3.0.co%3B2-h
• Keywords: molybdenum vanadium; chiral ligands; oxo complexes; homogeneouscatalysisOXYGEN ATOM TRANSFER; MONONUCLEAR
• Public URL: https://durham-repository.worktribe.com/output/1553524