Jansen van Rensburg, ArmandLandman, MarileVan der Westhuizen, DeidreConradie, Marrigje M.Conradie, Jeanet2016-10-122015-12Van Rensburg, AJ, Landman, M, Van der Westhuizen, D, Conradie, MM & Conradie, J 2015, 'Electrochemistry of Triphenylarsine-substituted Tungsten(0) Fischer carbene complexes', Electrochimica Acta, vol. 186, pp. 321-327,0013-4686 (print)1873-3859 (online)10.1016/j.electacta.2015.11.001http://hdl.handle.net/2263/57104A combined electrochemical and density functional theory study on four triphenylarsine-substituted tetracarbonyl tungsten(0) Fischer carbene complexes of general formula [(CO)4(AsPh3)WC(OEt)(Ar)], with Ar = 2-thienyl (1), 2-furyl (2), 2-(N-methyl)pyrrolyl (3), 2,20-bithienyl (4), revealed that electrochemical properties for these complexes follow the same trend as analogous pentacarbonyl and triphenylphosphine-substituted tetracarbonyl complexes in literature. The current results made it possible to establish a general trend for Fischer-type W-carbene complexes containing an aryl substituent, namely (largest metal oxidation and largest carbene carbon reduction potential) [(L) (CO)4WC(OEt)(2-thienyl)] > [(L)(CO)4WC(OEt)(2-furyl)] > [(L)(CO)4WC(OEt)(2-(N-methyl)pyrrolyl)] (L = CO, PPh3 or AsPh3).en© 2015 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Electrochimica Acta. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Electrochimica Acta, vol. 186, pp. 321-327, 2015. doi : 10.1016/j.electacta.2015.11.001.Fischer carbeneTungstenTriphenylarsineElectrochemistryDensity functional theory (DFT)Postprint Article