Table 3. Yields of Auration Following Transmetalation and Total Overall Yield of the Gold Complexes Starting from the Free Ligand.

starting complex	auration/%	overall yield from ligand/%
2,3-[Hg2]	24	18
2-[Hg]	40	36
2,5-[Hg]/2,5-[Hg2]a	17	10
2,4-[Hg]	6	3.5
3,4-[Hg]	13	5
3,5-[Hg]/3,5-[Hg2]a		0
4-[Hg]	48	8
3-[Hg]/5-[Hg]	20b	17

^aReaction started with the as-obtained mixture of the mono- and dimercurated complexes.

^bProduct obtained is 3,5′-[Au]-Cl.