Coordination complexes of the n-oxides of aromatic diimines and diazines

More hydra than Janus – Non-classical coordination modes in complexes of oligopyridine ligands

“…The commonest ways of doing this are by coordination to another metal centre, protonation, quaternization or N-oxidation. In general, pyridine N-oxides have a rich coordination chemistry, which is dominated by the bonding of the oxygen atom to a metal centre and this class of ligands will not be further considered [43,44,45].…”

Bis(2-oxopyridinatoN-oxide-κ2O,O′)copper(II)

“…Many metal complexes with pyridine N-oxide and its derivatives have been reported in the past few decades as a result of their interesting coordination chemistry (Karayannis et al, 1973(Karayannis et al, , 1976Landers & Phillips, 1982;Casellato et al, 1983;Riley et al, 1983;Scarrow et al, 1985;Lobana & Singh, 1995). However, metal complexes with chelating derivatives of pyridine N-oxide with donor atoms in the 2-position, such as 2-hydroxypyridine N-oxide (opo) (Hubbard et al, 1979;Landers & Phillips, 1981), have been less well studied and little work has been carried out on the X-ray crystal structures of complexes of this class (Casellato et al, 1983;Riley et al, 1983).…”

Bis[2-mercaptopyridineN-oxide(1–)-κ2N,O]platinum(II)

“…A large number of metal complexes with pyridine N-oxide and its derivatives have been reported for their interesting coordination chemistry in recent decades (Karayannis et al, 1973(Karayannis et al, , 1976Landers & Phillips, 1982;Casellato et al, 1983;Scarrow et al, 1985;Lobana & Singh, 1995). However, metal complexes of pyridine N-oxide derivatives with donor atoms in the 2position, such as 2-hydroxypyridine N-oxide (Landers & Phillips, 1981) and 2-mercaptopyridine N-oxide (mpo) (Robinson, 1964;Davidson et al, 1983;Chen et al, 1991;Shi et al, 1997;Lobana & Verma, 1999;Lobana et al, 2003) have been rarely been studied.…”