“Click” Chemistry in Metal Coordination Spheres: Copper(I)-Catalyzed 3+2 Cycloadditions of Benzyl Azide and Platinum Polyynyl Complexes trans-(C6F5)(p-tol3P)2Pt(C≡C)nH (n = 2−6)

Benzyl azide and the terminal polyynyl complexes trans-(C6F5)(p-tol3P)2Pt(C≡C)nH (n = 2−6) undergo 3+2 “click” cycloadditions in the presence of CuSO4/ascorbic acid to give the 1,2,3-triazoles trans-(C6F5)(p-tol3P)2Pt(C≡C)n−1C═CHN(CH2C6H5)N═N, four of which are structurally characterized.