S. Fanni et al., Site-specific methylation of coordinated 1,2,4-triazoles: A novel route tosterically hindered Ru(bpy)(2) complexes, INORG CHEM, 39(6), 2000, pp. 1320
A site-specific methylation of 1,2,4-triazolate rings in ruthenium(II) comp
lexes Using OMe3+BF4- is reported. Interestingly methylation takes place pr
eferentially at the most sterically hindered nitrogen atom of the coordinat
ed triazole ring.