The photocatalytic activity for CO(2) reduction and optical and electrochemical properties of two Ru(II)-Re(I) binuclear complexes [Ru(dmb)(2)LRe(CO)(3)Cl](2+) (Ru-Re and Ru=Re, dmb = 4,4'-dimethyl-2,2'-bipyridine) with 1,2-bis(4'-methyl-2,2'-bipyridyl-4-yl)ethane and 1,2-bis(4'-methyl-2,2'-bipyridyl-4-yl)ethene as bridging ligands have been investigated. The conjugation content of the bridging...

The title complex, {[Cu(2)(C(10)H(8)N(2))(C(25)H(22)P(2))(2)](BF(4))(2)·2.5CH(2)Cl(2)}(n), contains chains of Cu(I) centres bridged alternately by two (diphenyl-phosphino)methane (dppm) and 4,4'-bipyridine (bpy) ligands. Each Cu(I) atom is coordinated by one N atom of 4,4'-bipyridine (bpy) and two P atoms of two (diphenyl-phosphino)methane (dppm) ligand, and has a trigonal-planar coordination g...

In the crystal structure of the title polymeric compound, [Cu(C(12)H(12)O(4))(C(10)H(8)N(2))](n), the asymmetric unit consists of one Cu(II) ion, one 5-tert-butyl-isophthalate (tbip) and one 2,2'-bipyridine (bpy) ligand. The copper(II) ion is four-coordin-ated by two N atoms from bipy and two O atoms from two tbip ligands, leading to a distorted tetrahedral coordination. Each tbip ligand adopts...

The palladium-catalyzed conjugate addition (Michael addition) of ortho-substituted arylboronic acids to β,β-disubstituted cyclic enones, in particular 3-methyl cyclopent-2-enone and 3-methyl cyclohex-2-enone, is reported. With an achiral bipyridine-based palladium catalyst, good yields are obtained with a variety of ortho-substituted arylboronic acids. In the asymmetric version, good to very hi...

Amidine-appended ferrocene derivatives form a supramolecular assembly with Ru(ii)(bpy-COOH) (L)22+ complexes (bpy-COOH is 4-CO2H-4'-CH3-bpy and L = bpy, 2,2'-bipyridine or btfmbpy, 4,4'-bis (trifluoromethyl)-2,2'-bipyridine). Steady-state, time-resolved spectroscopy and kinetic isotope effects establish that the metal-to-ligand charge transfer excited states of the Ru(ii) complexes are quenched...