Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/4488
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Diastereomeric preference in l,4,7-tris((S)-2-hydroxy-3-phenylpropyl)-1,4,7-triazacyclononanelithium(I) and its sodium(I) analogue |
Author: | Weeks, J. Buntine, M. Lincoln, S. Wainwright, K. |
Citation: | Inorganica Chimica Acta, 2002; 331(1):340-344 |
Publisher: | Elsevier Science SA |
Issue Date: | 2002 |
ISSN: | 0020-1693 |
Statement of Responsibility: | Jennifer M. Weeks, Mark A. Buntine, Stephen F. Lincoln and Kevin P. Wainwright |
Abstract: | In N,N-dimethylformamide (DMF), 1,4,7-tris((S)-2-hydroxy-3-phenylpropyl)-1,4,7-triazacyclononane forms metal complexes, [M(S-thppc9)]+, for which logK (dm3mol-1)=3.01, 2.65, 2.66, 2.65, 2.42 and 7.59 (all±0.05) where M+=Li+, Na+, K+, Rb+, Cs+ and Ag+, respectively. Variable temperature 13C{1H} NMR spectroscopy shows that the interchange between equivalent forms of a single diastereomer occurs for [Li(S-thppc9)]+ and [Na(S-thppc9)]+ characterised by: k=43±5 and 2900±100 s-1, at 298.2 K, ΔH‡=22.5±1.6 and 33.8±1.6 kJmol-1, and ΔS‡=-133±5 and -59±6 JK-1mol-1, respectively. Gas phase ab initio modelling shows these complexes and their K+ analogue to preferentially form distorted trigonal prismatic Λ, Δ, and Λ diastereomers, respectively. © 2002 Published by Elsevier Science B.V. |
Description: | Copyright © 2002 Published by Elsevier Science B.V. |
DOI: | 10.1016/S0020-1693(01)00816-7 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/504086/description#description |
Published version: | http://dx.doi.org/10.1016/s0020-1693(01)00816-7 |
Appears in Collections: | Aurora harvest 6 Chemistry publications Environment Institute publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.