Two new one-component aluminium-based catalysts for the reaction between epoxides and carbon dioxide have been prepared. The catalysts are composed of aluminium-salen chloride complexes with trialkylammonium groups directly attached to the aromatic rings of the salen ligand. With terminal epoxides, the catalysts induced the formation of cyclic carbonates under mild reaction conditions (25-35 °C...

Lewis acidic yttrium(III) and titanium(IV) derivatives of anionic, metal-tethered carbenes apparently act as bifunctional catalysts for the polymerisation of D,L-lactide, using a combination of Lewis acid and base functionalities to initiate ring opening of the cyclic monomer; the alcohol- and amino-functionalised carbenes from which they derive provide models for the first insertion step, and ...

The Electrosynthesis of Organic Compounds Measurement of Electrodeposit Thickness Electron Concentration as a Guide to Alloying Behaviour A Rhodium-Platinum Probe for Flame Velocity Measurement Ruthenium-Platinum Oxide Catalysts for Hydrogenation Reactions Complexes of Substituted Olefins with Salts of the Platinum Metals Making Corrosion-Resistant Brazed Joints in Stainless Steel Thermocouples...

The mono(cyclopentadienyl)titanium(II) complex CpTiCl(dmpe)2 has been prepared by treating (CpTiCl2)x with n-butyllithium in the presence of 1,2-bis(dimethylphosphino)ethane (dmpe). Subsequent treatment of this titanium(II) species with methyllithium or n-butyllithium affords the alkyl and hydride analogues CpTiMe(dmpe)2 and CpTiH(dmpe)2, respectively. The X-ray crystal structures of CpTiX(dmpe...

In this study, the photocatalytic degradation of azo-dye acid orange 10 was investigated using titanium dioxide catalyst suspension, irradiation with ultraviolet-C lamp and bismuth vanadate under visible light of light-emitting diode lamp. Response surface methodology was successfully employed to optimize the treatment of acid orange 10 dye and assess the interactive terms of four factors. The ...

Cationic titanium(IV) complexes with ansa-(eta(5)-cyclopentadienyl,eta(6)-arene) ligands were synthesized and characterized by X-ray crystallography. The strength of the metal-arene interaction in these systems was studied by variable-temperature NMR spectroscopy. Complexes with a C(1) bridge between the cyclopentadienyl and arene moieties feature hemilabile coordination behavior of the ligand ...