Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5159821 | Journal of Molecular Structure | 2018 | 41 Pages |
Abstract
The result reveals that among the eight investigated crystals both the end ring N in the bis(imidazole) moieties are protonated when the organic acids are deprotonated except 2, and 5, and the crystal packing is interpreted in terms of the strong ionic NHâ¯O H-bond between the imidazolium and the deprotonated acidic groups. Except the NHâ¯O H-bond, the OHâ¯O H-bonds were also found at the salts 3, 4, 5, and 7, salt 5 has the additional NHâ¯N H-bond, the NHâ¯S H-bond was established at 8. Further analysis of the crystal packing of the adducts indicated that a different set of additional CHO/CH2O, CHCl, CH-Ï/CH2-Ï, ClC, ClN, OO, O-Ï, OH-Ï, and Ï-Ï associations contribute to the stabilization and expansion of the total 3D frameworks. For the coexistence of the various weak interactions these structures had homo or hetero supramolecular synthons or both. Some supramolecular synthons, such as R12(4), R22(7), and R22(8) usually found in crystals of organic acids with imidazole unit, were again shown to be appeared in constructing most of these H-bond networks.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Aihua Ding, Shouwen Jin, Shide Jin, KaiKai Hu, Zhihao Lin, Hui Liu, Daqi Wang,