Terpyridine and 2,6-di(1H-pyrazol-1-yl)pyridine substituted cyclotri- and polyphosphazene ruthenium(II) complexes: Chemical and physical behaviour

A series of cyclotriphosphazene and polyphosphazene ruthenium(II) compounds substituted with pendant 2,2′:6′,2″-terpyridine (terpy) or 2,6-di(1H-pyrazol-1-yl)pyridine (bpp) moieties have been synthesised. X-ray crystallography, in conjunction with spectroscopic and computational studies, has been used to compare the small molecule complexes with their polymeric analogues.