Electrochemical water oxidation reaction by dinuclear Re(V) oxo complexes with a 1,4-benzoquinone core the redox induced electron transfer (RIET) process.

We report two dinuclear rhenium(V) oxo complexes 1 and 2 types, [Re(O)(Cl)(L)Re(O)(Cl)][NBu] (1, L = dianionic 2,5-dihydroxy 1,4-benzoquinone (DBQ)) and (2, L = dianionic chloranilic acid (CA2-) ligands), as a homogeneous electrocatalyst for water oxidation reactions in the acetonitrile-water mixture. The evolution of dioxygen gas at the anode was confirmed by a GC-TCD study. In controlled potential electrolysis (CPE), oxidation at 1.

Mono Versus Dinuclear Vanadium(V) Complexes: Solvent Dependent Structural Versatility and Electro Syntheses of Mixed-Valence Oxovanadium(IV/V) Entities in Solution.

Two mononuclear oxidovanadium(V) complexes type of [VO(L)(OMe)(MeOH)] (), [VO(L)(OMe)(MeOH)] () and two [VO] core of μ-oxidodioxidodivanadium(V) complexes (L)(O)V-O-V(O)(L) () and (L)(O)V-O-V(O)(L) () and two complexes [VO(L)(8-Hq)] () and [VO(L)(8-Hq)] () incorporating 8-hydroxyquinoline (8-hq) as co-ligand have been reported where L [()-'-(2-hydroxybenzylidene)cinnamohydrazide] and L [(2,')-'-(2-hydroxybenzylidene)-3-(naphthalen-1-yl)acrylohydrazide] are the dianionic forms of the conjugated keto-imine functionalized substituted hydrazone ligands. The μ-oxidodioxidodivanadium complexes are generated upon switching the solvent from methanol to acetonitrile. The X-ray analysis showed octahedral geometry for the mononuclear complexes , and but oxido-bridged dinuclear complexes and formed penta-coordinated square-pyramidal geometry about metal atoms.

Anthracene-Based Fluorophore and Its Re(I) Complexes: Investigation of Electrical Properties and Schottky Diode Behavior.

A novel fluorophore (HL) [1-(()-(quinolin-8-ylimino)methyl)anthracen-2-ol] using a suitably designed anthrol and quinoline derivative was synthesized and well characterized. Then, two Re(I) complexes with the -[Re(CO)] moiety were prepared with the ligand under different reaction conditions. Both the complexes [Re(L)(CO)] (1) and [Re(HL)(CO)Cl] (2) absorbed in the visible region.