Organometallic color chemistry: studies on [FcCH = CHC5H4NCH2C6H4(Bu-t)]X (X = BPh4-, ClO4-)

Authors
Dieguez, M Collomb, MN Crabtree, RH
Citation
M. Dieguez et al., Organometallic color chemistry: studies on [FcCH = CHC5H4NCH2C6H4(Bu-t)]X (X = BPh4-, ClO4-), J ORGMET CH, 608(1-2), 2000, pp. 146-152
Citations number
24
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF ORGANOMETALLIC CHEMISTRY
ISSN journal
0022328X → ACNP
Volume
608
Issue
1-2
Year of publication
2000
Pages
146 - 152
Database
ISI
SICI code
0022-328X(20000825)608:1-2<146:OCCSO[>2.0.ZU;2-1
Abstract
The title dyes, [FcCH=CHC5H4NCH2C6H4('Bu)]X (X = BPh4-, ClO4-), developed f or rapid screening of catalysts, are intensely colored, but bleach on expos ure to visible light in solution. Detailed study shows that on irradiation these alkene dyes first undergo a trans-cis isomerization, then give an irr eversible bleaching via decomposition. Both dyes show color dependence on t he nature of the anion as a result of ion-pairing, which affects the intens ity and position of the visible absorption. NMR, MS and EPR data are also r eported. (C) 2000 Elsevier Science S.A. All rights reserved.