Arene ruthenium(II) azido complexes incorporating N⋂O chelate ligands: Synthesis, spectral studies and 1,3-dipolar-cycloaddition to a coordinated azide in ruthenium(II) compounds

The arene ruthenium(II) azido compounds [{(p-cymene)Ru(N⋂O)N3}] have been prepared by the reaction of [{(p-cymene)Ru(μN3)Cl}2] with the corresponding ligands. The ruthenium azido compounds [{(p-cymene)Ru(N⋂O)N3}] undergo 1,3-dipolar additions with substituted alkynes at room temperature to give the (η6-arene) ruthenium triazolato compounds [(p-cymene)Ru(N⋂O){N3C2(CO2R)2}]. The compounds were characterized on the basis of FTIR, NMR (1H and 13C) and the molecular structure of a representative compound has been established with the help of single crystal X-ray diffraction.

Graphical abstractArene ruthenium(II) azido compounds chelated with N⋂O ligands of the general formula [(p-cymene)Ru(N⋂O)N3] have been prepared by the reaction of [{(p-cymene)RuCl(N3)}2] with the corresponding N,O-donor ligand. The complex [(p-cymene)Ru(N⋂O)N3] undergoes a 1,3-dipolar cycloaddition reaction with alkynes at room temperature to give the ruthenium triazolato compounds [(p-cymene)Ru(N⋂O){N3C2CO2R}2].Figure optionsDownload full-size imageDownload as PowerPoint slide