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Updated: Jun 1, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
Published on: February 6, 2020
2-Amino-4-methyl-pyridinium 2-hy-droxy-benzoate
Madhukar Hemamalini1, Hoong-Kun Fun
1X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
Abstract:
The asymmetric unit of the title mol-ecular salt, C(6)H(9)N(2) (+)·C(7)H(5)O(3) (-), contains two cations and two anions. Both the salicylate anions contain an intra-molecular O-H⋯O hydrogen bond, which generates an S(6) ring. Both the 2-amino-4-methyl-pyridine mol-ecules are protonated at their pyridine N atoms. In the crystal, both cations form two N-H⋯O hydrogen bonds to their adjacent anions, forming ion pairs. Further N-H⋯O links generate sheets lying parallel to the ab plane. In addition, weak C-H⋯O bonds and aromatic π-π stacking inter-actions [centroid-centroid distances = 3.5691 (9) and 3.6215 (9) Å] are observed between the cations and anions.
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