AI Article Synopsis
- The study focuses on a new type of chemical structure called a [2]catenane, which is designed to recognize chloride ions effectively.
- The assembly of this catenane relies on the specific interactions between chloride ions and a combination of aromatic systems and pyridine-zinc bonds.
- Experimental results show that the catenane can selectively bind chloride ions due to a unique cavity that uses multiple hydrogen bonds for stabilization, making it more selective than for larger halide ions in solution.
Article Abstract
The synthesis, structure and anion-recognition properties of a new strapped-porphyrin-containing [2]catenane anion host system are described. The assembly of the catenane is directed by discrete chloride anion templation acting in synergy with secondary aromatic donor-acceptor and coordinative pyridine-zinc interactions. The [2]catenane incorporates a three-dimensional, hydrogen-bond-donating anion-binding pocket; solid-state structural analysis of the catenane⋅chloride complex reveals that the chloride anion is encapsulated within the catenane's interlocked binding cavity through six convergent CH⋅⋅⋅⋅Cl and NH⋅⋅⋅Cl hydrogen-bonding interactions and solution-phase (1) H NMR titration experiments demonstrate that this complementary hydrogen-bonding arrangement facilitates the selective recognition of chloride over larger halide anions in DMSO solution.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4691337 | PMC |
| http://dx.doi.org/10.1002/chem.201502721 | DOI Listing |
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