Scheme 2. Synthesis of Alkylazide and Triazole Derivatives of the Cobalt Bis(dicarbollide) Ion.

The starting mesyl esters were prepared according to previously published procedures.^20,29 Reaction conditions: i. NaN₃, DMF, r.t., 12 h; ii. Ph-alkyne, CuI, DIPEA, DMF, 40 °C.