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An unusual four-nuclear Pb(II)-pyrrole-2-carboxylato polymer: The effect of the lone pair and non-covalent interactions on the supramolecular assembly and fluorescence properties
Abstract
The reaction of Pb(NO3)2 with 1H-pyrrole-2-carboxylic acid (2prCOOH) leads to the formation of a new four-nuclear Pb(II) polymer, [Pb4(2prCOO)8(H2O)]n, which has been characterized by CHN, FT-IR, TG, PL and single-crystal X-ray diffraction methods. In view of the primary Pb–O bonds, Pb1 and Pb3 show hemidirected pentagonal pyramidal geometries, while Pb2 and Pb4 display hemidirected octahedral geometries. The topology of the strongest Pb–O bonds is determined as the (4·82) fes topology. Taking the secondary Pb–O bonds into account, the coordination number of Pb centres increased, Pb1 exhibited a hemidirected monocapped pentagonal pyramidal geometry, Pb2 and Pb4 exhibited a holodirected tricapped trigonal prismatic geometry, and Pb3 exhibited a holodirected bicapped trigonal prismatic geometry. Moreover, the Pb(II) lone pair stereoactivity was confirmed by DFT calculations. The 2D structure was expanded into 3D by the existence of non-covalent O/C–H···π and Pb···π interactions, which was confirmed by the Hirshfeld surface analysis. The above mentioned interactions improve the rigidity of the structure and facilitate the charge and energy transfer between metal centres, making the polymer a promising luminescent compound.
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Authors (6)
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Mateusz Kowalik mgr
- Institute of Chemistry, Jan Kochanowski University in Kielce I
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Joanna Masternak dr
- Institute of Chemistry, Jan Kochanowski University in Kielce
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Oleksiy Khavryuchenko
- Shupyk National Medical Academy of Postgraduate Education (NMAPE), Kyiv, Ukraine
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Bogumiła Kupcewicz
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz
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Barbara Barszcz dr hab.
- Institute of Chemistry, Jan Kochanowski University in Kielce
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
JOURNAL OF SOLID STATE CHEMISTRY
no. 273,
pages 207 - 218,
ISSN: 0022-4596 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Kowalik M., Masternak J., Kazimierczuk K., Khavryuchenko O., Kupcewicz B., Barszcz B.: An unusual four-nuclear Pb(II)-pyrrole-2-carboxylato polymer: The effect of the lone pair and non-covalent interactions on the supramolecular assembly and fluorescence properties// JOURNAL OF SOLID STATE CHEMISTRY -Vol. 273, (2019), s.207-218
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jssc.2019.03.007
- Verified by:
- Gdańsk University of Technology
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