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Strong σ ‐Hole Activation on Icosahedral Carborane Derivatives for a Directional Halide Recognition
Author(s) -
Beau Maxime,
Lee Sunhee,
Kim Sooyeon,
Han WonSik,
Jeannin Olivier,
Fourmigué Marc,
Aubert Emmanuel,
Espinosa Enrique,
Jeon IeRang
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202010462
Subject(s) - chemistry , carborane , halogen , dimer , icosahedral symmetry , halide , chalcogen , halogen bond , supramolecular chemistry , molecule , crystal engineering , crystallography , stereochemistry , crystal structure , inorganic chemistry , organic chemistry , alkyl
Crystal engineering based on σ ‐hole interactions is an emerging approach for realization of new materials with higher complexity. Neutral inorganic clusters derived from 1,2‐dicarba‐ closo ‐dodecaborane, substituted with ‐SeMe, ‐TeMe, and ‐I moieties on both skeletal carbon vertices are experimentally demonstrated herein as outstanding chalcogen‐ and halogen‐bond donors. In particular, these new molecules strongly interact with halide anions in the solid‐state. The halide ions are coordinated by one or two donor groups (μ 1 ‐ and μ 2 ‐coordinations), to stabilize a discrete monomer or dimer motifs to 1D supramolecular zig‐zag chains. Crucially, the observed chalcogen bond and halogen bond interactions feature remarkably short distances and high directionality. Electrostatic potential calculations further demonstrate the efficiency of the carborane derivatives, with V s,max being similar or even superior to that of reference organic halogen‐bond donors, such as iodopentafluorobenzene.