INFRARED AND MANOMETRIC EVIDENCE FOR THE FORMATION OF THE [AG(CO)3]+ COMPLEX ION AT HIGH P(CO)

At high pressures of CO, the Ag+ salt of the weakly coordinating anion [Nb(OTeF5)6]- takes up three equiv. CO reversibly both in the solid s tate and in 1,1,2-C2Cl3F3 solution; the CO ligands can be removed from [Ag(CO)3][Nb(OTeF5)6] under vacuum at 25-degrees-C but none are remov ed at -78-degrees-C; IR v(CO) values are 2192 cm-1 for [Ag(CO)3]+, 219 8 cm-1 for [Ag(CO)2]+, and 2208 cm-1 for [AgCO]+.