Application of the kinetic method to bifunctional bases MIKE and CID-MIKE test cases

International audienceAn assessment of the kinetic method and its applicability to the determination of the basicity of bidentate molecules is done by considering several examples previously studied by equilibrium methods. Selected examples are: 1,2-ethanediol, 1,3-propanediol, glycerol, 1,4-butanediol, 1,2-dimethoxyethane, 2-methoxyethanol methoxyacetone, 1,2-diamino ethane, 1,3-diamino propane and 1,4-diaminobutane. It is generally observed that the orthodox use of the method leads to GB(M), PA(M) and protonation entropy values different from that obtained by the equilibrium method. (C) 2003 Published by Elsevier Science B.V

SILAR deposition of Ni(bpy)3X: {X = (NCS)2, (Fe(CN)5NO), and (Ag(CN)2)2} thin films on glass substrates

The authors focused on the preparation of thin layers based on hybrid materials (organometallic complexes) deposited onto glass substrates. The deposition experiments of [Ni(bpy)3](NCS)2, [Ni(bpy)3](Ag(CN)2)2, and [Ni(bpy)3](Fe(CN)5NO) were performed on glass slides (18 mm × 18 mm) by successive ionic layer adsorption and reaction (SILAR) method. The influence of some parameters, such as dipping cycle numbers (30, 60, and 120 dipping cycles), temperature (20°C, 30°C, 40°C, and 50°C), precursors concentration (10−3, 10−2, and 10−1 M), and the nature of the counteranions (NCS−, [Fe(CN)5NO]−2, [Ag(CN)2]−) were studied. Different methods (UV-Vis, SEM, FTIR, and XRD) were used to characterize the deposited layers to determine the absorption coefficient (α) and gap energy (Eg) of the materials