Abstract
A new supramolecular cocrystal of bis(3-hydroxy-1-methylpyridin-1-ium iodide)-18-crown-6 (I) has been synthesized successfully from 3-hydroxypyridine, methyl iodide and 18-crown-6 (18C6). The cocrystal was characterized by FT-IR, UV-DRS and PL spectroscopy, single crystal and powder X-ray diffraction (XRD) analysis, SEM and EDS analysis, and thermogravimetric analysis. The bulk phase purity of the compound is confirmed by powder XRD analysis, whereas single-crystal XRD confirms that it packs in a monoclinic system with centrosymmetric space group (P21/c). Single crystal XRD shows that the asymmetric unit is C6H12O3, [C6H8NO]+[I]¯. The presence of C–H⋯O, C–H⋯I and O–H⋯I intermolecular contacts helps to achieve crystal cohesion. The direct band gap energy has been estimated to be 3.21 eV using diffuse reflectance spectral measurements. Thermogravimetric analysis was employed to determine the compound’s thermal behaviour concerning temperature. EDS and SEM investigations were used to examine the elemental composition and surface morphology of the compound.
Funding source: National Fellowship for Persons with Disabilities
Award Identifier / Grant number: NFPWD-2021-22
Funding source: New Delhi, for financial support through Fellowship
Award Identifier / Grant number: NFPWD-2021-22-TAM-11531
Funding source: Rashtriya Uchchatar Shiksha Abhiyan-2.0 (RUSA-2.0), New Delhi
Award Identifier / Grant number: RUSA-2.0/R&I/Field-6/2022
Acknowledgements
The author M V thanked the UGC fellowship for the National Fellowship for Persons with Disabilities (Award No. NFPWD-2021-22-TAM-11531), New Delhi. The authors N A and S P thank Rashtriya Uchchatar Shiksha Abhiyan-2.0 (Grant No. RUSA-2.0/R&I/Field-6/2022), New Delhi.
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Research ethics: Not Applicable.
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Author contribution: M V: Methodology, Investigation, Writing – review & editing, writing – original draft. N A: Software and Formal Analysis. C B: Investigation, Formal Analysis. M D: Software and Formal Analysis. S P: Supervision, Conceptualization, Writing – review & editing, Writing – original draft. All authors read and approved the final manuscript.
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Competing interests: The authors state no conflict of interest.
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Research funding: This work was supported by the UGC fellowship for the National Fellowship for Persons with Disabilities (NFPWD-2021-22), New Delhi, for financial support through Fellowship Award No. NFPWD-2021-22-TAM-11531 and Rashtriya Uchchatar Shiksha Abhiyan-2.0 (RUSA-2.0), New Delhi, for financial support through research grant No. RUSA-2.0/R&I/Field-6/2022.
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Data availability: The raw data can be obtained on request from the corresponding author.
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Supplementary Material
This article contains supplementary material (https://doi.org/10.1515/zkri-2024-0060).
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