Exploring thiophene-2-acetate and thiophene-3-acetate binding modes towards the molecular and supramolecular structures and photoluminescence properties of Pb(ii) polymers - Publikacja - MOST Wiedzy

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Exploring thiophene-2-acetate and thiophene-3-acetate binding modes towards the molecular and supramolecular structures and photoluminescence properties of Pb(ii) polymers

Abstrakt

To evaluate the impact of the flexible positional isomeric ligands thiophene-2-acetate (2tpacCOO) andthiophene-3-acetate (3tpacCOO) on the construction and self-assembly process of Pb(II) polymers, twonovel compounds, [Pb(2tpacCOO)2(H2O)]n(1) and [Pb(3tpacCOO)2]n(2), were preparedviaanonhydro-thermal method with respect to green chemistry rules. The obtained polymers were fully characterized byelemental analysis, TG/DTG and PXRD, FT-IR, solid-state photoluminescence, DFT calculations and single-crystal X-ray diffraction. Each Pb(II)centreof1is 7-coordinated as a {PbO7} chromophore while the Pb(II)centre of2is 6-coordinated as a {PbO6} structure. The coordination polyhedron of1is best described as adistorted monocapped pentagonal pyramid, and2has a distorted trigonal prismatic shape. The crystallo-graphic analysis and DFT calculations indicated the stereoactivity of the lone electron pair, which contrib-uted to the hemidirected geometry of the Pb(II) environment. Due to the versatile binding modes of the li-gands, complex1forms 1D stair-like chains with an SP 1-periodic net (4,4)(2,0) topology, and theunderlying net of2is determined to have a 1D 2,4C4 topology. It is worth noting that the crystal structuresof the obtained polymers are stabilized mainly by many hydrogen bonds as well as Pb⋯SandPb⋯πtetrelinteractions. Moreover, the PL data demonstrate the different influences of the isomers of linkers onphotoluminescence properties. Polymer1might be a good candidate for obtaining solid-state photo-luminescent materials.

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
CRYSTENGCOMM nr 22, strony 7025 - 7035,
ISSN: 1466-8033
Język:
angielski
Rok wydania:
2020
Opis bibliograficzny:
Kowalik M., Masternak J., Kazimierczuk K., Kupcewicz B., Khavryuchenko O., Barszcz B.: Exploring thiophene-2-acetate and thiophene-3-acetate binding modes towards the molecular and supramolecular structures and photoluminescence properties of Pb(ii) polymers// CRYSTENGCOMM -Vol. 22,iss. 42 (2020), s.7025-7035
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1039/d0ce01224f
Weryfikacja:
Politechnika Gdańska

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