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Diverse structural assemblies of U-shaped hydrazinyl-sulfonamides: experimental and theoretical analysis of non-covalent interactions stabilizing the solid state conformations

Abstract

The present study unfolds the synthesis of five new hydrazinyl-sulfonamide derivatives incorporating linear and branched alkyl chains. An efficient and straightforward synthetic approach was realized to achieve these sulfonamide compounds in good yields. The synthesized compounds were fully characterized by spectroscopic methods and single crystal X-ray diffraction analysis. Structural analysis of U-shaped hydrazinyl-sulfonamides reveals the presence of remarkable similarities in their crystal packing. Supramolecular architectures of these molecules were stabilized by the classical hydrogen bonds and C—H···O interactions. Furthermore, the U-shaped conformation observed in the solid state of all compounds has been analyzed using DFT calculations, AIM analysis and the NCIplot index. It reveals the existence of two intramolecular interactions, which are NH···π and unconventional π–π interactions involving the hydrazido π-system.

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Publication details

The article was received on 08 Nov 2018, accepted on 06 Feb 2019 and first published on 07 Feb 2019


Article type: Paper
DOI: 10.1039/C8CE01917G
Citation: CrystEngComm, 2019, Accepted Manuscript

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    Diverse structural assemblies of U-shaped hydrazinyl-sulfonamides: experimental and theoretical analysis of non-covalent interactions stabilizing the solid state conformations

    H. Andleeb, I. Khan, A. Franconetti, M. N. Tahir, J. Simpson, S. Hameed and A. Frontera, CrystEngComm, 2019, Accepted Manuscript , DOI: 10.1039/C8CE01917G

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