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. Author manuscript; available in PMC: 2012 Dec 7.
Published in final edited form as: Angew Chem Int Ed Engl. 2008;47(27):5038–5042. doi: 10.1002/anie.200801426

Figure 3.

Figure 3

Single crystal X-ray diffraction structures of the chloride anion complexes of the strapped calix[4]pyrroles 2 and 3.[16] In both cases, NH- and CH-anion contacts of ≤ 3 Å are shown. The structure of 2•Cl– was originally published in reference #4.