“…the now popular 2-phenylpyridine complexes mentioned in the Introduction [3,4]. Rillema and co-workers have extensively studied the absorption and emission properties of a number of Pt(2,2 -bph) complexes with the mono-and bidentate ligands, pyridine, acetonitrile, ethylenediamine, CO (27) [23,42], dppm [44,45], and the bridging ligand SEt 2 [41]. Absorption spectra of mono-metallic [Pt(2,2 -bph)(py) 2 ] (52), [Pt(2,2 -bph)(NCMe) 2 ] bonyl complex 27 have been carried out to examine singlet and triplet excited states, and to compare calculated geometries with those from the X-ray crystallographic data previously obtained [42,43].…”