2-( Phenylazo) pyridine (pap) has a higher
reduction potential than 2,2’-bipyridyl, is a
stronger n-acceptor and gives stable ruthenium
complexes. It was synthesized from nitrosobenzene
and 2aminopyridine [ 191. The synthesis of
the complexes is depicted in Scheme 1.
Ru( DMS0)&12 was synthesized from
RuCl, - 3H20 and dimethyl sulfoxide (DMSO)
[W.