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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Bismuth Coordination Polymers with 2,4,6-Pyridine Tricarboxylic Acid: High-Throughput Investigations, Crystal Structures and Luminescence Properties

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Rhauderwiek, Timo [1] ; Cunha, Cesar dos Santos [2, 1] ; Terraschke, Huayna [1] ; Stock, Norbert [1]
Total Authors: 4
[1] Univ Kiel, Inst Inorgan Chem, Max Eyth Str 2, D-24118 Kiel - Germany
[2] Univ Sao Paulo, Inst Chem, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: European Journal of Inorganic Chemistry; n. 27, p. 3232-3240, JUL 23 2018.
Web of Science Citations: 0

Four new coordination polymers (CPs) were obtained under hydrothermal reaction conditions using 2,4,6-pyridinetricarboxylic acid (H3PTC) and Bi(NO3)(3)<bold></bold>5H(2)O. The systematic high-throughput investigation of the system Bi3+/H3PTC/NaOH/HNO3/H2O led to the compounds {[}Bi(PTC)(H2O)(2)] (1), (H3O){[}Bi-2(PTC)(HPTC)(2)(H2O)(2)] (2), -{[}Bi(PTC)] (3) and -{[}Bi(PTC)] (4), which were structurally characterised by single-crystal X-ray diffraction. Compounds 1 and 2 crystallise in 2D layered structures, whereas 3 and 4 form 3D coordination networks. Employing the nomenclature proposed by Cheetham et al. 1 and 2 are classified as (IO1)-O-1 (mixed inorganic-organic layers), 3 as (IO3)-O-0 (3D coordination polymers) and 4 as (IO2)-O-1 (mixed inorganic-organic 3D framework). In all cases the nitrogen atom of the linker is coordinated to the Bi3+ ion, which therefore acts as a tridentate pincer-type ligand. All title compounds were obtained as phase-pure products employing conventional or microwave-assisted heating, but the reproducibility of the synthesis depends on reactor size and material. In addition, the luminescence properties of 1 and 2 were studied resulting in a yellow and blue-green luminescence under UV light with emission maxima at 570 nm ((ex) = 343 nm) and 483 nm ((ex) = 347 nm) for 1 and 2, respectively. The differences in the spectroscopic properties could be assigned to the distinct coordination and chemical environments of the Bi3+ ions within these compounds. (AU)

FAPESP's process: 16/03640-9 - High-throughput investigation of new rare earth-doped bismuth-based metal-organic frameworks (MOFs)
Grantee:Cesar dos Santos Cunha
Support type: Scholarships abroad - Research Internship - Doctorate (Direct)