We report new divalent osmium complexes that feature strong red metal-to-ligand-charge-transfer (MLCT) phosphorescence and electrophosphorescence. The general formula of the complexes is Os(II)(N-N)(2)L-L, where N-N is either a bipyridine or a phenanthroline and L-L is either a phosphine or an arsine. New polypyridyl ligands synthesized are 4,4'-di(biphenyl)-2,2'-bipyridine (15) and 4,4'-di(dip...

In the title compound, [Cu(C(16)H(11)BrN(2))(C(18)H(33)P)]BF(4), the Cu(I) atom is three-coordinated in a distorted trigonal configuration by two N atoms from the 6-(4-bromo-phen-yl)-2,2'-bipyridine ligand and a P atom from the tricyclo-hexyl-phosphine ligand. In addition, a weak anion⋯Cu(I) inter-action with a nearest F⋯Cu separation of 2.696 (5) Å is found.

The neutral dinuclear complexes [(η⁵-C₅Me₅)₂Rh₂(μ-dhnq)Cl₂] (1) and [(η⁵-C₅Me₅)₂Ir₂(μ-dhnq)Cl₂] (2) (dhnqH₂ = 5,8-dihydroxy-1,4-naphthoquinone) were obtained from the reaction of [(η⁵-C₅Me₅)M(μ-Cl)Cl]₂ (M = Rh, Ir) with dhnqH₂ in the presence of CH₃COONa. Treatment of 1 or 2 in methanol with linear ditopic ligands L (L = pyrazine, 4,4'-bipyridine or 1,2-bis(4-pyridyl)ethylene), in the presence ...

• The salts with protonated bipyridines and [W(CN) 6 (bpy)] 2- were synthesized. layered structure of compared to their analogues alkali metal cations. dimethyl substituted bipyridine as a cation shows 3D dimensionality. cation-anion distance was discussed in relation position the UV-Vis bands. ion-pair-charge-transfer transitions these found 8 ] 4− analogues. series 2− 2,2′-bpy (1), 4,4′-bpy (...

In the title compound, [Cd(HCOO)(2)(C(10)H(8)N(2))](n), the Cd(II) ion, located on a position with 2.22 site symmetry, is surrounded by two 4,4'-bipyridine ligands and four formate ligands in a distorted octahedral CdN(2)O(4) coordination. The 4,4'-bipyridine ligands bridge the metal ions, forming one-dimensional chains along different directions, which are further connected by formate ligands ...