The molecular structure of tris(4,4'-bipyrimidine)ruthenium(II) {[Ru(b
pm)(3)](2+)} in the title compound {[Ru(C8H6N4)(3)](PF6)(2).C3H6O} is
similar to that of tris(2,2'-bipyridine)ruthenium(II) {[Ru(bpy)(3)](2)}. However, replacement of C by N in the heterocyclic ring alters the
molecular electrostatic potential of the complex cation and hence the
chiral recognition and self-assembling, yielding a crystal-packing pa
ttern that is unique among known structures of related trisdiimine-met
al complexes.