The N-heterocyclic olefin, IPr=CH(2) (IPr = [(HCNDipp)(2)C], Dipp = 2,6-(i)Pr(2)C(6)H(3)) has been demonstrated to be of sufficient Lewis basicity to stabilize main group hydrides in unusually low oxidation states.

A facile and selective synthesis of N-substituted 2-aminopyridines is accomplished via microwave-assisted multi-component reactions controlled by the basicity of amine and the nature of solvent. In addition, a possible mechanism accounting for the reaction was proposed.

A combined experimental and theoretical approach has been employed to establish the basicity and proton affinity of SiF4 and the structure of SiF4H . The kinetics and energetics for the transfer of a proton between SiF4, N2, and Xe have been explored experimentally in helium at 0.35 6 0.02 torr and 297 6 3 K with a selected-ion flow tube apparatus. The results of equilibrium constant measuremen...

ABSTRACT The stepwise protonation constants of two linear triphosphate ligand anions, triphosphate, [Formula: see text] and di-imidotriphosphate, [Formula: see text], were investigated by potentiometric titration, and the intrinsic chemical shifts of the stepwise protonated species of these anions were determined from the pH-dependence of the 31P NMR chemical shifts. All stepwise protonation co...

This paper reports on different physical and optical properties of Nd3+-doped bismuth borate glasses. The glasses containing Nd3+ in (25 − x)Bi2O3:20Li2O:20ZnO:35B2O3:xNd2O3 (where x = 1, 1.5, 2 mol%) have been prepared by melt-quenching method. The amorphous nature of the glasses was confirmed by X-ray diffraction studies. The physical parameters like dielectric constant, refractive index, ion...

The effect of substituents on the acidity benzoic acids and anilines has been organized in grids to demonstrate inductive resonance effects. relation between structure pKa is emphasized by a new educational process: Search-Organize-Predict (SOP) procedure.