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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Crystal structures, thermal properties and intermolecular interactions of new benzamide-based derivatives
Rajakumar Kanthapazham1, Artyom A Osipov1, Andrey N Efremov1
1South Ural State University (National Research University), 76 Lenin prospekt, Chelyabinsk, 454080, Russian Federation.
None:
Two benzamide-based derivatives were synthesized and their structures solved for the first time. The successful syntheses of N-ethyl-4-iodobenzamide (C9H10INO, NE4IBA) and N-ethyl-4-ethynylbenzamide (C11H11NO, NE4EBA) were achieved via a simple synthetic route. The molecules of NE4IBA in the crystal form one-dimensional double chains with strong hydrogen bonding and weak I...I halogen interactions, while NE4EBA forms two-dimensional hydrogen-bonded layers, including acetylene moieties engaging in C-H...O interactions within a rigid planar layer packing arrangement. Intermolecular N-H...O interactions between the amide groups dominate in both crystal structures. The strong exothermal effect of acetylene-group polymerization was detected immediately after melting NE4EBA using a simultaneous thermal analysis.
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