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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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New synthetic routes to cationic rhenium tricarbonyl bipyridine complexes with labile ligands

Hevia, E and Perez, J and Riera, V and Miguel, D and Kassel, S and Rheingold, A (2002) New synthetic routes to cationic rhenium tricarbonyl bipyridine complexes with labile ligands. Inorganic Chemistry, 41 (18). pp. 4673-4679. ISSN 0020-1669

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Abstract

Triflate abstraction from the complex [Re(OTf)(CO)(3)(bipy)] (1) using the salt NaBAr'(4) (Ar' = 3,5-bis(trifluoromethyl)phenyl) in dichloromethane solution in the presence of L = PPh3, NCMe, NCPh, imines, ketones, Et2O, THF, MeOH, and Mel affords cationic complexes [Re(L)(CO)(3)(bipy)](+) as their BAr'(-)(4) salts. The new complexes have been characterized spectroscopically and, for [Re(eta1-O=C(Me)R)(CO)(3)(bipy)]BAr'(4) (R = CH3, 6a; R = Ph, 6b), and [Re(THF)(CO)(3)(bipy)]BAr'(4) (9), also by single-crystal X-ray diffraction. Compared with conventional methodologies, the route reported here allows the coordination of a broader range of weakly coordinating ligands and requires considerably milder conditions. On the other hand, the reactions of lithium acetylides with [Re(THF)(CO)(3)(bipy)]BAr'(4) (9) can be used for the high-yield syntheses of rhenium alkynyls [Re(Cequivalent toCR)(CO)(3)(bipy)] (R = Ph, 12; R SiMe3, 13). Complex 9 was found to catalyze the aziridination of benzylideneaniline with ethyl diazoacetate.