13C, 15N and 31P NMR study of the disproportionation of cyanogold(I) complexes: [R3PAu13C15N]

Effects of coordination mode of 2-mercaptothiazoline on reactivity of Au(I) compounds with thiols and sulfur-containing proteins

“…ppm respectively, confirming the disproportionation. [38] In the presence of NAC, the signal of compound 3 shows loss of CN -trans to the phosphine, being consistent with the 31 P NMR data. A small amount of the [Au(CN) 2 ] -is still present, suggesting that this is a less reactive species than compound 3 whose signals disappear first.…”

Complexation of (trimethylphosphine)gold(I) with Selenones

“…Me 3 P was obtained from Strem Chemical Co. All the selenones were synthesized according to the procedure described in the literature [9,10]. Me 3 PAuCl was prepared as described earlier [11].…”

“…However, the cyclic selenone studied here indicates that the propyl substituent such as [Me 3 PAuPrImSe]Cl forms a stronger complex compared to the methyl and ethyl substituents containing complexes. This could be due to the steric effect and more electron donation from Se to gold(I) forming a more stable Au-Se complex [11].…”

“…The donation of electron density by selenones to gold(I) increases back donation from gold(I) towards phosphine, which increases the double bond character of the Au-P bond, resulting in a deshielding effect at the phosphorus atom. The smallest shift in [Me 3 PAuMeImSe]Cl suggests that MeImSe is the least basic among these ligands [11].…”

Gold(I) complexes with selenones and triphenylphosphine as ligands

“…All the selenones were synthesized according to the procedure described in the literature [12,13]. Ph 3 PAuCl was prepared by adding Ph 3 P to a slurry of Me 2 S-AuCl in Me 2 CO under N 2 with stirring for 30 min [14].…”