Complexation of (trimethylphosphine)gold(I) with Selenones |
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| Authors: | Anvarhusein A Isab Saeed Ahmad |
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| Institution: | (1) Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia;(2) Department of Chemistry, University of Engineering and Technology, Lahore, 54890, Pakistan |
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| Abstract: | Mixed ligand complexes of gold(I) with various selenones and Me3P, Me3PAuSe=C<]Cl, have been prepared and characterized by elemental analyses, i.r. and n.m.r. methods. A decrease in the i.r. frequency
of the >C=Se mode of selenones upon complexation is indicative of selenone binding to gold(I) via a selenone group. An upfield shift in 13C-n.m.r. for the >C=Se resonance of selenones and downfield shifts in 31P-n.m.r. for Me3P moiety are consistent with the selenium coordination to gold(I). The steric effect as well as the basicity of Me3PAu+ plays a significant role in bonding with Se-containing ligands compared to the Et3PAu+ and Ph3PAu+ complexes. |
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