Abstract
Heterolytic dissociation of molecular iodine (I2) led to the unexpected formation of triiodides and linear pentaiodide in the solid state when four N-alkyl ammonium resorcinarene halides are reacted with molecular iodine (I2).
Highlights
Four N-alkyl ammonium resorcinarene halides incorporating polyiodides were obtained and structurally analyzed by single crystal X-ray crystallography
The unexpected formation of triiodides and pentaiodide anions in these structures was assumed to be the result of the heterolytic dissociation of molecular iodine (I2) in the presence of electron donors in the N-alkyl ammonium resorcinarene halide system, from which I− further binds one or two I2 molecules resulting in I3− or I5− species, respectively
Halogen bonding is widely used in the design and construction of small and large supramolecular assemblies with novel applications in crystal engineering, materials science and biological systems.[2,3,4,5,6,7,8]
Summary
Four N-alkyl ammonium resorcinarene halides incorporating polyiodides were obtained and structurally analyzed by single crystal X-ray crystallography. The unexpected formation of triiodides and pentaiodide anions in these structures was assumed to be the result of the heterolytic dissociation of molecular iodine (I2) in the presence of electron donors in the N-alkyl ammonium resorcinarene halide system, from which I− further binds one or two I2 molecules resulting in I3− or I5− species, respectively.
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