The synthesis and X-ray characterisation of four isomeric dipyridyl ketone oxime ligands, 4, 4′-dipyridyl ketone oxime, L44, 3, 3′-dipyridyl ketone oxime, L33, 2, 4-dipyridyl ketone oxime, L24 and 2, 3-dipyridyl ketone oxime, L23 is described. X-ray structural characterisation of the precursor ketones 3, 3′-dipyridyl ketone, L1, and 2, 4-dipyridyl ketone, L2, is also reported for comparison. Four AgCF3SO3 complexes of the dipyridyl ...