Please use this identifier to cite or link to this item: https://doi.org/10.1002/chem.200600863
Title: MTO Schiff-base complexes: Synthesis, structures and catalytic applications in olefin epoxidation
Authors: Zhou, M.-D.
Zhao, J. 
Li, J.
Yue, S.
Bao, C.-N.
Mink, J.
Zang, S.-L.
Kühn, F.E.
Keywords: Epoxidation
Homogeneous catalysis
Rhenium
Schiff bases
Structure-activity relationships
Issue Date: 2007
Citation: Zhou, M.-D., Zhao, J., Li, J., Yue, S., Bao, C.-N., Mink, J., Zang, S.-L., Kühn, F.E. (2007). MTO Schiff-base complexes: Synthesis, structures and catalytic applications in olefin epoxidation. Chemistry - A European Journal 13 (1) : 158-166. ScholarBank@NUS Repository. https://doi.org/10.1002/chem.200600863
Abstract: Several Schiff-base ligands readily form complexes with methyltrioxorhenium(VII) (MTO) by undergoing a hydrogen transfer from a ligand-bound OH group to a ligand N atom. The resulting complexes are stable at room temperature and can be handled and stored in air without problems. Due to the steric demands of the ligands they display distorted trigonal-bipyramidal structures in the solid state, as shown by X-ray crystallogra phy. with the O- moiety binding to the Lewis acidic Re atom and the Rebound methyl group being located either in cis or trans position to the Schiff base. In solution, however, the steric differences seem not to be maintained, as can be deduced from 17O NMR spectroscopy. Furthermore, the Schiff-base ligands exchange with donor ligands. Nevertheless, the catalytic behaviour is influenced significantly by the Schiff bases coordinated to the MTO moiety, which lead either to high selectivities and good activities or to catalyst decomposition. A large excess of ligand, in contrast to the observations with aromatic N-donor ligands, is detrimental to the catalytic performance as it leads to catalyst decomposition. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
Source Title: Chemistry - A European Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/94325
ISSN: 09476539
DOI: 10.1002/chem.200600863
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

62
checked on Nov 14, 2018

WEB OF SCIENCETM
Citations

56
checked on Nov 7, 2018

Page view(s)

41
checked on Oct 19, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.