Two-way linkage photoisomerization of [Ru(2,2':6',2''-terpyridine)(6- {(methylsulfinyl)methyl}picolinate)]BF4

Abstract

[Ru(tpy)(picSO)]BF4 (tpy: 2,2':6',2''-terpyridine, picSO: 6- [(methylsulfinyl)methyl]picolinate) undergoes profound linkage isomerization behavior between stable S-bound and metastable O-bound isomers. S-[RuII(tpy)(picSO)]BF4 experiences photoisomerization to O-[RuII(tpy)(picSO)] BF4 upon irradiation with 436nm light, whereas the back reaction is triggered with 546nm light. Electrochemical linkage isomerization also takes place. © 2013 The Chemical Society of Japan.