Lead(II) coordination polymers with imidazole-4- and pyrazole-3-carboxylate isomeric linkers: Structural diversity and luminescence properties - Publikacja - MOST Wiedzy

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Lead(II) coordination polymers with imidazole-4- and pyrazole-3-carboxylate isomeric linkers: Structural diversity and luminescence properties

Abstrakt

Using 1H-imidazole-4-carboxylic acid (4imCOOH) and 1H-pyrazole-3-carboxylic acid (3pyrCOOH) coordination polymers [Pb(4imCOO)2(H2O)]n (1) and [Pb2(3pyrCOO)4]n (2) were constructed. Obtained polymers were characterized via FT-IR, X-ray, PL and TG methods. The coordination polyhedron around Pb(II) in 1 is described as distorted pentagonal pyramid with hemidirected coordination sphere (based on DFT calculations). Compound 2 consists of two crystallographically independent Pb(II) centres: Pb1 forms distorted monocapped pentagonal pyramid polyhedron (CN = 7, hemidirected), whereas the coordination polyhedron of Pb2 is distorted monocapped pentagonal pyramid (CN = 7) or tricapped octahedron (CN = 9, including secondary bonds) with holodirected geometry (confirmed by DFT calculations). Crystal structure of polymer 1 demonstrates a 1D structural motif with 2C1 topology while polymer 2 is a 2D compound with cpf topology. Polymer 1 presents blue-green emission at 485 nm at RT in the solid state, whereas polymer 2 exhibits two emission centres with maximum at 449 nm (blue fluorescence) and at 532 nm (green-yellow fluorescence), respectively.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
JOURNAL OF SOLID STATE CHEMISTRY nr 226, strony 100 - 111,
ISSN: 0022-4596
Język:
angielski
Rok wydania:
2018
Opis bibliograficzny:
Kowalik M., Masternak J., Kazimierczuk K., Khavryuchenko O., Kupcewicz B., Barszcz B.: Lead(II) coordination polymers with imidazole-4- and pyrazole-3-carboxylate isomeric linkers: Structural diversity and luminescence properties// JOURNAL OF SOLID STATE CHEMISTRY. -Vol. 226, (2018), s.100-111
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.jssc.2018.07.012
Weryfikacja:
Politechnika Gdańska

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