Insight into the High Proton Conductivity of One-/Two-Dimensional Cadmium Phosphites.

The study describes the synthesis and structural attributes of two new cadmium phosphites, [Cd{OP(O)(OH)H}(4,4'-bipy)] () and [Hpip][Cd(HPO)(HO)]·HO (). The structure of adopts a two-dimensional motif featuring alternate [Cd-μ-O] and [Cd-O-P-O]-cyclic rings, while the inorganic chains are held together by 4,4'-bipyridine. The presence of strong hydrogen bonding interactions between the appended HPO groups (O---O = 2.

Studies on the Genesis and Proton Conductivity of Imidazole-Based Linear and Open-Framework Zinc Phosphites.

Three new zinc phosphites, [HIm][Zn(HPO)] (), [Zn(HPO)Im] (), and [Zn(HPO)Im] () (Im = imidazole), have been synthesized from the hydro/solvothermal reaction of zinc acetate, dimethyl phosphite, and imidazole by varying the temperature and solvent of the reaction medium. The structure of is built from vertex-sharing of four HPO-capped ZnP units and adopts an open framework with 12-ring channels stabilized by HIm cations via N-H···O hydrogen bonds. For , the inorganic skeleton is comprised of alternating ZnO and HPO tetrahedra, while the coordinatively associated ZnNO fragments occupy the 12-ring hexagonal channels.