Add time:09/02/2019         Source:sciencedirect.com

Three new organically templated or organically bonded zinc selenates, namely, {H2bipy}Zn(SeO4)2(H2O)21 (bipy=4,4′-bipyridine), {H2pip}{Zn(SeO4)2(H2O)4}·2H2O 2 (pip=piprazine), and Zn(SeO4)(phen)(H2O)23 (phen=1,10-phenanthroline) have been synthesized by hydrothermal reactions. The structure of compound 1 features a 1D chain composed of [Zn(SeO4)2(H2O)2]2− anions. Compound 2 has a 2D layer structure built from {Zn(SeO4)2(H2O)4}2− anions that are cross-linked by doubly protonated piperazine cations via N–H⋯O hydrogen bonds. The structure of compound 3 contains a 1D chain of Zn(SeO4)(phen)(H2O)2, such chains are further interlinked by hydrogen bonds and π⋯π interactions to form a 〈200〉 layer. The different roles the templates played have also been discussed.

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