Splitting water into hydrogen and oxygen by dye-sensitized photoelectrochemical cell (DSPEC) is a promising approach to solar fuels production. In this study, series of pyridine derivatives as surface additives were modified on molecular chromophore oxidation catalyst co-loaded TiO2 photoanode, TiO2|RuP, 1 (RuP = Ru(4,4?-(PO3H2)2-2,2?-bipyridine)(2,2?-bipyridine)2, Ru(bda)(L)2, (bda 2,2?-bipyri...

The title complex, [Co(3)(C(8)H(3)NO(6))(2)(C(2)H(3)O(2))(2)(C(10)H(8)N(2))(2)(H(2)O)(2)], was synthesized under hydro-thermal conditions. The structure features a centrosymmetric complex with three Co(II) centres, one of which is located on a centre of inversion. The Co centres are coordinated in a distorted octa-hedral geometry. The bipyridine ligands are bonded to just one Co centre in a che...

In the title 1:1 adduct, C(10)H(8)N(2)·C(10)H(12)O(8), the dihedral angle between the pyridine rings in the 4,4-bipyridine molecule is 8.33 (13)°. In the crystal, the cyclo-hexane-1,2,4,5-tetra-carb-oxy-lic acid mol-ecules inter-act with each other through inter-molecular O-H⋯O hydrogen bonds, forming an infinite chain along the a axis, which is further linked perpendicularly by O-H⋯N hydrogen ...

Heterotetrametallic [{[Ti](μ-σ,π-C≡CSiMe3)2}Cu-bipy-C≡C-AuPh2PFc]PF6 (5) ([Ti] = (ηC5H4SiMe3)2Ti; Fc = (η-C5H4)(η-C5H5)Fe; bipy = 2,2`-bipyridine) is accessible by the consecutive reaction of FcPPh2-AuCl (1) with 5-ethynyl-2,2`-bipyridine (2) producing FcPPh2-AuC≡C-bipy (3) which further reacts with [{[Ti](μ-σ,π-C≡CSiMe3)2}Cu(N≡CMe)]PF6 (4) to give the title complex in which four different tran...

The title compound, [Cu(2)(C(7)H(3)NO(5))(2)(C(10)H(8)N(2))(H(2)O)(2)], exhibits a centrosymmetric binuclear molecule. Each completely deprotonated 4-hy-droxy-pyridine-2,6-dicarb-oxy-lic acid mol-ecule assumes a tridentate chelating coordination mode. The square-pyramidal coordination geometry around the Cu(II) ion is completed by the bridging bipyridine ligand and an apical water molecule. Adj...

A relevant series of symmetric supramolecular porphyrins has been obtained by attaching four [RuII(bipy)2Cl] groups to the pyridyl substituents of meso-tetra(4-pyridyl)porphyrin and its metallated derivatives. These compounds display a rich electrochemistry and versatile catalytic, electrocatalytic and photochemical properties, associated with the ruthenium-bipyridine and the porphyrin complexe...