Reaction of $\rm Cp\sp{\*}Ir(CO)H\sb2\ (Cp\sp{\*}=\eta\sp5$-C$\rm\sb5Me\sb5)$ with triflic acid (HOSO$\rm\sb2CF\sb3)$ generates hydrogen and the hydride bridged dimer $\rm\lbrack Cp\sp{\*}Ir(CO)H\rbrack\sb2(\mu$-H)$\sp+.$ Variable temperature (VT) $\sp1$H NMR spectroscopy reveals that the bridging and terminal hydride ligands ...