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Co-ordination of the chiral N,O-ligand 2-[(1S, 2S,5R)(-)-menthol]pyridine to molybdenum(VI) and vanadium(IV) oxocomplexes - Crystal structures of [MoO2{2-(-)-menthol-pyridine}(2)] and [VO{2-(-)menthol-pyridine}(2)]

Bellemin-Laponnaz, S; Coleman, KS; Osborn, JA

Authors

S Bellemin-Laponnaz

JA Osborn



Abstract

Reaction of the chiral 1-pyridin-2-yl-menthol ligand (1) with [VO(acac)(2)] and [MoO2(acac)(2)] results in the formation of the metal-ore complexes [VO(N-O)(2)] (2) and [MoO2(N-O)(2)] (3), where N-O=2-[(-)-menthol]-pyridine. The molecular structures of (2) and (3) have been determined by single-crystal X-ray diffraction, which revealed the expected square-pyramidal geometry for (2) with the pyridine ring nitrogens mutually trans, and the expected slightly distorted octahedral arrangement of (3) with cis di-oxo ligands. Both metal-ore compounds (2) and (3) have demonstrated the ability to catalyse the asymmetric oxidation of prochiral olefins and sulfides with H2O2 or tBuOOH as the oxidant. (C) 1999 Elsevier Science Ltd, All rights reserved.

Citation

Bellemin-Laponnaz, S., Coleman, K., & Osborn, J. (1999). Co-ordination of the chiral N,O-ligand 2-[(1S, 2S,5R)(-)-menthol]pyridine to molybdenum(VI) and vanadium(IV) oxocomplexes - Crystal structures of [MoO2{2-(-)-menthol-pyridine}(2)] and [VO{2-(-)menthol-pyridine}(2)]. Polyhedron, 18(19), 2533-2536

Journal Article Type Article
Publication Date 1999
Journal Polyhedron
Print ISSN 0277-5387
Electronic ISSN 1873-3719
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 18
Issue 19
Pages 2533-2536
Keywords molybdenum; vanadium; chiral ligands; metal oxides; X-rayOXYGEN-ATOM TRANSFER; ASYMMETRIC CATALYSIS; LIGANDS; OXIDATION;ALCOHOLS; SYSTEM
Public URL https://durham-repository.worktribe.com/output/1552794