I. Boldog, G. Reiss, K. V. Domasevitch
Jul 12, 2019
Citations
0
Influential Citations
5
Citations
Journal
Crystal Growth & Design
Abstract
1,3,5-Trisubstituted adamantane carboxamide and amine hydrochloride, Ad(CONH2)3·2.5H2O and [Ad(NH3)3]Cl3·H2O (Ad = adamant-n-yl) respectively, crystallized from aqueous solutions, possess crystal structures with predictable H-bonded assembly, consistent with the C3v symmetry of the building blocks. The triamide structure consists of interpenetrated hexagonal networks, sustained by the well-known cyclic H-bonded bis-amide synthon, R22(8), which ensures linear connectivity. The structure of the triamine hydrochloride, assembled through the tetrahedral {RN+H3···(Cl–)3} synthon, features a remarkably symmetric assembly with narrow trigonal pore channels, hosting water molecules. The structures of the tetrahedral 1,3,5,7-tetrasubstituted Ad(CONH2)4 and [Ad(NH3)4]Cl4, obtained similarly, demonstrate a formal prediction failure of synthon-based approach. Instead of the anticipated bis-amide synthon-based diamond network (1.485 g cm–3) analogous to the 5-fold interpenetrated paradigmatic structure of Ad(COOH)4, a...