In basic solution the complex Re(I) [bipy(OH)2] (CO)3Cl with bipy(OH)2 = 3,30-dihydroxy-2,20-bipyridine
is deprotonated at one of the phenolic OH substituents. Upon irradiation of the anion {Re[bipy(OH)(O)]
(CO)3Cl} the yellow solution becomes reddish brown. It is suggested that the photolysis is associated
with an isomerization at the chelate from N,N to N,O coordination.
2014