Poly-pnictogen bonding: trapping halide ions by a tetradentate antimony(iii) Lewis acid.

ABSTRACT: A highly halide affine, tetradentate pnictogen-bonding host-system based on the syn-photodimer of 1,8-diethynylanthracene was synthesized by a selective tin-antimony exchange reaction. The host carries four C[triple bond, length as m-dash]C-Sb(C₂F₅)₂ units and has been investigated regarding its ability to act as a Lewis acidic host component for the cooperative trapping of halide ions (F^-, Cl^-, Br^-, I^-). The chelating effect makes this host-system superior to its bidentate derivative in competition experiments. It represents a charge-reversed crown-4 and has the ability to dissolve otherwise poorly soluble salts like tetra-methyl-ammonium chloride. Its NMR-spectroscopic properties make it a potential probe

SUBMITTER: Beckmann JL 

PROVIDER: S-EPMC10685332 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature