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. 2015 Oct 16;1(9):e1500761. doi: 10.1126/sciadv.1500761

Fig. 2. Synthetic routes to Au(III)-CO complexes.

Fig. 2

Left inset shows the diagnostic aromatic region of the 1H NMR spectra of (C^N^C)AuOAcF (bottom), intermediate [(C^N^C)Au]+ [(C6F5)3BOAcF] (1) (middle), and product [(C^N^C)Au-CO]+ [(C6F5)3BOAcF] (2a) (top) (300 MHz, CD2Cl2, −30°C), confirming quantitative generation of the CO complex. Right inset shows the CO stretching bands of 2a and of 2a-13C in CH2Cl2 solution at −20°C, accompanied by the corresponding bands for 12CO2 and 13CO2, respectively, resulting from the reaction of the Au(III)-CO complex with traces of moisture.