Surface Science of Soft Scorpionates
Dawn Wallace
Edward J. Quinn
David R. Armstrong
John Reglinski
Mark D. Spicer
W. Ewen Smith
10.1021/ic9014898.s001
https://acs.figshare.com/articles/journal_contribution/Surface_Science_of_Soft_Scorpionates/2792002
The chemisorption of the soft scorpionate Li[PhTm<sup>Me</sup>] onto silver and gold surfaces is reported. Surface enhanced Raman spectroscopy in combination with the Raman analysis of suitable structural models, namely, [Cu(κ<sup>3</sup>-S,S,S-PhTm<sup>Me</sup>)(PCy<sub>3</sub>)], [Ag(κ<sup>3</sup>-S,S,S-PhTm<sup>Me</sup>)(PCy<sub>3</sub>)], [Ag(κ<sup>2</sup>-S,S-PhTm<sup>Me</sup>)(PEt<sub>3</sub>)], and [Au(κ<sup>1</sup>-S-PhTm<sup>Me</sup>)(PCy<sub>3</sub>)], are employed to identify the manner in which this potentially tridentate ligand binds to these surfaces. On colloidal silver surface-enhanced Raman spectroscopy (SERS) spectra are consistent with PhTm<sup>Me</sup> binding in a didentate fashion to the surface, holding the aryl group in close proximity to the surface. In contrast, on gold colloid, we observe that the species prefers a monodentate coordination in which the aryl group is not in close proximity to the surface.
2010-02-15 00:00:00
proximity
aryl group
surface
Soft ScorpionatesThe chemisorption
Raman
SERS
Ag
Surface
spectroscopy