A novel zeolite-induced population of a planar viologen conformation. New viologen charge transfer complexes and alkene/viologen/zeolite arrays

Article Abstract:

The zeolite-induced conformational change and a mechanism for this process is suggested in order to rationalize an expected spontaneous intrazeolite reduction observed during preparation of a new viologen (MQ(super 2+))-doped zeolite (NaY). Using the Bebesi-Hildebrand approach the binding constants between (MQ(super 2+)) and MV(super 2+) and 2,3-dimethyl-2-butene (TME) were determined and the stabilities of these charge complexes are compared to their intrazeolite analogue.

Chemical bonds, Properties

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Effect of rotational mobility on photoelectron transfer: comparison of two zeolite topologies

Article Abstract:

Differences in the amount of rotational motion afforded by the different zeolite cages such as Ru(bpy)(sub 3)(super 2+) within the hypercages of zeolite EMT were investigated with (super 2)H solid-state nuclear magnetic resonance (NMR) spectroscopy. Both forward and back electron-transfer reactions were faster within zeolite EMT as compared to zeolite Y.

Usage, Observations, Nuclear magnetic resonance spectroscopy, Electron transport

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Density functional theory study of silica zeolite structures: Stabilities and mechanical properties of SOD, LTA, CHA, MOR, MFI

Article Abstract:

Various silica zeolites were investigated using density functional theory with periodic supercells plane waves, and pseudopotentials. The elastic properties vary significantly from one phase to another, and in some cases, large elastic anisotropies were observed.

Industrial sand, Silica & Silica Sand, Industrial Sand Mining, Analysis, Silica, Chemistry, Physical and theoretical, Physical chemistry, Density functionals, Density functional theory, Structure, Silicon dioxide

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