Synthesis and properties of the elusive ruthenium(II) complexes of 4'-cyano-2,2':6',2' '-terpyridine.
The heteroleptic and homoleptic ruthenium(II) complexes of 4'-cyano-2,2':6',2' '-terpyridine are synthesized by palladium catalyzed cyanation of the corresponding Ru(II) complexes of 4'-chloro-2,2':6',2' '-terpyridine. The introduction of the strongly electron-withdrawing cyano group into the Ru(tpy)(2)(2+) moiety dramatically changes its photophysical and redox properties as well as prolongs its room temperature excited-state lifetime.
Wang
Jianhua
J
Département de Chimie, Université de Montréal, Montréal, Québec, Canada.
Fang
Yuan-Qing
YQ
Hanan
Garry S
GS
Loiseau
Frédérique
F
Campagna
Sebastiano
S