The Library
Expression of chirality in salicyloxazolinate complexes of zirconium
Tools
Westmoreland, Ian, Munslow, Ian J., Clarke, Adam J., Clarkson, Guy J., Deeth, Robert J. and Scott, Peter (2006) Expression of chirality in salicyloxazolinate complexes of zirconium. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 691 (10 Sp. Iss. SI). pp. 2228-2236. doi:10.1016/j.jorganchem.2005.10.055 ISSN 0022-328X.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1016/j.jorganchem.2005.10.055
Abstract
Treatment of chiral non-racemic salicyloxazoline proligands HL with tetrabenzylzirconium(IV) gave species [L2Zr(CH2Ph)(2)]. Reactions of KL with ZrCl4(THF)(2) gave similar chloro complexes. One example of a benzyl complex was shown to exist as the Lambda-trans,cis,cis diastereomer by X-ray crystallography. DFT calculations showed the observed isomer to be the most stable by 35 kJ mol(-1), indicating that thermodynamic diastereoselection for this species is excellent. Examination of the chiral environment about the benzyl co-ligands indicates however that the degree of expression of the chirality of the structure in what would be the site of metal-based reactions is poor in comparison to related systems. Variable temperature H-1 NMR data are consistent with this in that the low temperature spectrum exhibits a very small chemical shift difference between the chemically inequivalent benzylic CH atoms, and at higher temperatures dissociation of the portion of the ligand that contains the chiral information, i.e., the oxazoline unit, leads to apparent equivalence. (c) 2005 Elsevier B.V. All rights reserved.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF ORGANOMETALLIC CHEMISTRY | ||||
Publisher: | ELSEVIER SCIENCE SA | ||||
ISSN: | 0022-328X | ||||
Official Date: | 1 May 2006 | ||||
Dates: |
|
||||
Volume: | 691 | ||||
Number: | 10 Sp. Iss. SI | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 2228-2236 | ||||
DOI: | 10.1016/j.jorganchem.2005.10.055 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |