Abstract
Protonation of (
N N
)
2Ru(CO
3) with aqueous HPF
6 followed by reaction with terminal alkynes gives (
N N
)
2Ru(CO)(CH
2R)
+PF
6
− [
N N
= 2,2′-bpy; R = H, t-Bu, Ph;
N N
= bpy
★ = 4,4′-di-t-Bu-2,2′-bpy; R = Ph]. Reaction of (bpy)
2Ru(CO
3) with propargyl bromide in water in the presence of HPF
6 yields (bpy)
2Ru(CO)(Br)
+PF
6
−, whereas reaction of (bpy
★)
2Ru(CO
3) with HPF
6 and trimethylsilylacetylene in ethanol-water affords (bpy
★)
2Ru(CO)(OH
2)
2+(PF
6
−)
2. Use of propiolic acid results in the unexpected formation of (
N N
)
2Ru(CO)(COCH
3)
+PF
6
−.