The molecule in which a methyl viologen (MV2+) moiety is coupled through a three-carbon chain to one bipyridine in Ru(bpy)3 (bpy ) 2,2′bipyrine), [Ru(bpy)2(4-(2-(1′-methyl-4-4′-bipyridinediium-1-yl)propyl)-4′-methyl2,2′-bipyridine), abbreviated Ru(bpy)2(MV-bpy)], does not emit upon photoexcitation because of rapid quenching of the MLCT state by the MV2+. The integrated steady-state photoemissio...

The title compound, [Cu(C(8)H(7)O(2))(C(10)H(8)N(2))(2)]I·0.5H(2)O, was obtained by the hydro-thermal reaction of copper(I) iodide, 4-methyl-benzoic acid and 2,2'-bipyridine. The initial reactant of Cu(I) was oxidized to Cu(II). The asymmetric unit contains two independent complex mol-ecules, two I(-) ions and one water molecule. Each Cu(II) atom is coordinated by two O atoms from a 4-methyl-be...

The complex [Ir(ppy)(2)(dpbpy)][PF(6)] (Hppy = 2-phenylpyridine, dpbpy = 6,6'-diphenyl-2,2'-bipyridine) has been prepared and evaluated as an electroluminescent component for light-emitting electrochemical cells (LECs); the complex exhibits two intramolecular face-to-face pi-stacking interactions and long-lived LECs have been constructed; the device characteristics are not significantly improve...

A dynamic mixture of iron complexes was used as a colorimetric sensor for sulfated glycosaminoglycans. The sensing ensemble was prepared by mixing [FeCl(2)(H(2)O)(4)] with dipicolylamine, the functionalized bipyridyl ligand N-(6-aminohexyl)-4'-methyl-2,2'-bipyridine-4-carboxamide, and the dye Evans Blue. Upon addition of the analytes, characteristic changes in the UV-Vis spectrum of the solutio...

Ultrafast time-resolved infrared spectroscopy of [Ru(bpy)3]2+ (bpy = 2,2'-bipyridine), [Ru(mbpy)3]2+ (mbpy = 6-methyl-2,2'-bipyridine) and [Ru(mphen)3]2+ (mphen = 2-methyl-1,10'-phenanthroline) in deuterated acetonitrile serves to elucidate the evolution of the system following pulsed excitation into the 1MLCT band at 400 nm. While for [Ru(bpy)3]2+ no intermediate state can be evidenced for the...

In the tetranuclear centrosymmetric title compound, [Pb(4)(NO(3))(8)(C(11)H(10)N(2))(4)], irregular PbN(2)O(5) and PbN(2)O(4) coordination polyhedra occur. The hepta-coordinated lead(II) ion is bonded to two bidentate and one monodentate nitrate ion and one bidentate 6-methyl-2,2'-bipyridine (mbpy) ligand. The six-coordinate lead(II) ion is bonded to one bidentate and two monodentate nitrate an...

In the title co-crystal, C(10)H(8)N(2)·C(8)H(7)NO(4)S, the formate group is coplanar with the pyridyl ring of the acid [dihedral angle = 6.2 (7)°], while the carb-oxy-methyl-sulfanyl group makes a C-S-C-C torsion angle of 70.2 (1)° with the pyridine ring. The dihedral angle between the pyridyl rings of the 4,4'-bipyridine mol-ecule is 27.4 (1)°. The acid and the 4,4'-bipyridine mol-ecules are i...

The title dimethyl-tin diisothio-cyanate adduct of 4,4'-bipyridine, [Sn(CH(3))(2)(NCS)(2)(C(10)H(8)N(2))](n), adopts a chain motif in which the N-heterocycle functions as a bridge to adjacent all-trans octa-hedrally coordinated tin atoms. The Sn(IV) atom lies on a special position of 2/m site symmetry, the methyl C atom on a special position of 2 site symmetry, and the thio-cyanate and 4,4'-bip...