Louis, Ligimol published the artcilePhotoluminescence and electrochemical studies of tetranuclear ruthenium(II) polypyridyl complexes of benzimidazolyl functionalized pyrenylcalix[4]resorcinarene, Recommanded Product: Picolinonitrile, the main research area is preparation tetranuclear ruthenium polypyridyl benzimidazolyl functionalized pyrenylcalixresorcinarene complex; cyclic voltammetry tetranuclear ruthenium polypyridyl benzimidazolyl functionalized pyrenylcalixresorcinarene complex; luminescence tetranuclear ruthenium polypyridyl benzimidazolyl functionalized pyrenylcalixresorcinarene complex; crystal structure pyrenylcalixresorcinarene compound.
The authors report the hitherto unreported pyrene footed calix[4]resorcinarene (P1) supramol. assembly and its tetranuclear Ru(II) polypyridyl complexes, [{Ru(phen)2}4(L)](ClO4)8 (CP1, 1), [{Ru(bpy)2}4(L)](ClO4)8 (CP2, 2), and [{Ru(P2)2}4(L)](ClO4)8 (CP3, 3) [where, L (7)= 2,8,14,20-tetra(pyren-1-yl)-5,11,17,23-tetrakis((2-(pyridin-2-yl)-1H-benzimidazol-1-yl)methyl)-4,6,10,12,16,18,22,24-octahydroxy-calix[4]resorcinarene and P2 (9) = 2-(pyridin-2-yl)-1H-benzimidazole]. The single crystal structure of 2,8,14,20-tetra(pyren-1-yl)-4,6,10,12,16,18,22,24-octahydroxycalix[4]-resorcinarene (P1, 8) possesses all cis configuration and a boat like conformation with pyrene rings occupying the axial positions. The tetranuclear complexes, CP1, CP2 and CP3, show decreasing energy of 3MLCT luminescence at 298 K but the intensity is increased at 77 K in frozen acetonitrile due to lowering of energy gap between π* of the ligand and the d orbital of ruthenium metal ion. The luminescence quantum yield also was increased considerably in all the complexes when the temperature is decreased from 298 K to 77 K due to the lowering of nonradiative decay pathways. The complexes exhibit a single exponential decay profile in acetonitrile at 298 K. The cyclic voltammograms of the complexes show simultaneous four single electron quasireversible redox processes.
Inorganica Chimica Acta published new progress about Crystal structure. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Recommanded Product: Picolinonitrile.
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts