Conformational diastereoisomers of PPh3 coordinated to stereogenic metal centres as molecular optical switches

Authors
Ayscough, AP Costello, JF Davies, SG
Citation
Ap. Ayscough et al., Conformational diastereoisomers of PPh3 coordinated to stereogenic metal centres as molecular optical switches, TETRAHEDR-A, 12(11), 2001, pp. 1621-1624
Citations number
15
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON-ASYMMETRY
ISSN journal
09574166 → ACNP
Volume
12
Issue
11
Year of publication
2001
Pages
1621 - 1624
Database
ISI
SICI code
0957-4166(20010704)12:11<1621:CDOPCT>2.0.ZU;2-V
Abstract
The specific rotation of (R-Fe,R,M)-4 switches sign upon epimerisation to ( R-Fe,S,P)-5. X-Ray crystallographic studies suggest that inversion of the p ropeller configuration of the coordinated PPh3 ligand is a major contributo r to the switch of specific rotation. A simple model for predicting the con formational diastereoisomeric forms of PPh3 is presented, suggesting future routes towards the design of molecular optical switching devices. (C) 2001 Elsevier Science Ltd. All rights reserved.