Structural and Photophysical Properties of (Phosphane)gold(I)-Decorated 4,4′-Diethynyl-2,2′-bipyridine Ligands

Constable, Edwin C. and Housecroft, Catherine E. and Kocik, Marzena K. and Neuburger, Markus and Schaffner, Silvia and Zampese, Jennifer A.. (2009) Structural and Photophysical Properties of (Phosphane)gold(I)-Decorated 4,4′-Diethynyl-2,2′-bipyridine Ligands. European Journal of Inorganic Chemistry (31). pp. 4710-4717.

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Official URL: http://edoc.unibas.ch/dok/A5259905

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Treatment of 4,4'-diethynyl-2,2'-bipyridine with R3PAuCl (R = Ph, 4-Tol, Et, iPr) leads to the formation of a family of (phosphane)gold(I)-decorated 4,4'-diethynyl-2,2'-bipyridine ligands. The solid-state structures of the compounds are significantly affected by the change from aryl- to alkyl-substituted phosphanes, whereas the progression from ethyl to isopropyl substituents leads to a subtle change in the packing that results in the propagation of two different polymeric chain motifs, both supported by close Au center dot center dot center dot Au contacts [3.1239(1) angstrom for R = Et, and 3.395(1) angstrom for R = iPr]. In CH2Cl2 solution, each of the compounds 1-4 is a dual emitter at room temperature. When the excitation wavelength is approximately 238 nm, the emission spectra of I and 2 exhibit new bands at 288 and 570 nm at the expense of the original emissions. The photodegradation is not inconsistent with the formation of gold nanoclusters.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
UniBasel Contributors:Constable, Edwin Charles
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article -- The final publication is available at Wiley, via DOI link.
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Last Modified:10 Apr 2017 14:44
Deposited On:22 Mar 2012 14:10

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