The
patterns of the thermally-induced linkage isomerization observed
in the present isomeric pairs differ depending on the sptctator
ligand(s). IR measurements (KBr disk) show that, at room
temperature, neither cis-[Ru(NO)X(2,2’-bpy)2I2n+o r cis-[Ru-
(NO)X(pyca)2] underwent any rearrangement. On the other