Shen, Xuan published the artcileNew 2-phenyl-5-nitropyridyl containing iridium(III) cyclometalated complexes: syntheses, structures, electrochemistry and photophysical properties, Application of 5-Nitro-2-phenylpyridine, the publication is Inorganic Chemistry Communications (2011), 14(9), 1511-1515, database is CAplus.
New 2-phenyl-5-nitropyridyl containing iridium(III) cyclometalated complexes ([Ir(5-NO2-ppy)2Cl]2 (1, 5-NO2-ppy = 2-phenyl-5-nitropyridyl), [Ir(5-NO2-ppy)2(PPh3)Cl] (2, PPh3 = triphenylphosphine), [Ir(5-NO2-ppy)2(pic)] (3, pic = picolinic acid)) were synthesized and unambiguously characterized. The crystal structures of 2 and 3 were determined by x-ray diffraction analyses. The HOMO-LUMO energy gaps of 1–3 estimated by the cyclic voltammetry (CV) show values in the order of 2 > 3 > 1. The UV-visible absorption and the solid photoluminescence (PL) spectra of 1–3 also were measured, exhibiting the changing orders being consistent with that of the HOMO-LUMO energy gaps. Also, the UV-visible absorption spectra of 1–3 show obvious red shifts compared with those of the corresponding 2-phenylpyridyl (ppy) containing Ir(III) complexes ([Ir(ppy)2Cl]2, Ir(ppy)2(PPh3)Cl and Ir(ppy)2(pic)) in which no strongly electron-withdrawing nitro groups are introduced to the pyridyl rings of the ppy ligands. Thus, the HOMO-LUMO energy gaps of 1–3 should be narrower than those of [Ir(ppy)2Cl]2, Ir(ppy)2(PPh3)Cl and Ir(ppy)2(pic).
Inorganic Chemistry Communications published new progress about 89076-64-2. 89076-64-2 belongs to pyridine-derivatives, auxiliary class Pyridine,Nitro Compound,Benzene, name is 5-Nitro-2-phenylpyridine, and the molecular formula is C13H10N2S, Application of 5-Nitro-2-phenylpyridine.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem