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Ultima descărcare din IBN: 2024-02-22 05:22 |
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54.057:548.1 (1) |
Obținere. Preparare. Izolare. Purificare etc. (51) |
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SM ISO690:2012 VODĂ, Irina. A new 2d coordination polymer based on zinc(ii), 1,2,3-benzenetricarboxylic acid and 4,4ʹ-bis(imidazol-1-ylmethyl)biphenyl: synthesis and crystal structure. In: Chemistry Journal of Moldova, 2023, nr. 1(18), pp. 70-76. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2022.1021 |
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Chemistry Journal of Moldova | ||||||
Numărul 1(18) / 2023 / ISSN 1857-1727 /ISSNe 2345-1688 | ||||||
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DOI:https://doi.org/10.19261/cjm.2022.1021 | ||||||
CZU: 54.057:548.1 | ||||||
Pag. 70-76 | ||||||
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Rezumat | ||||||
The solvothermal reaction of zinc(II) nitrate with 1,2,3-benzenetricarboxylic acid (1,2,3-H3BTC) and 4,4ʹ-bis(imidazol-1-ylmethyl)biphenyl (BIBPh) produced a crystalline solid {[Zn3(BIBPh)3(BTC)2]∙H2O}n. The product has been structurally characterised and investigated by X-ray diffraction, IR and thermogravimetric methods. The polymer has a bidimentional structure and crystallizes in the P21/c space group of the monoclinic system with the following unit cell parameters: a= 14.8687(16), b= 36.915(4), c= 13.8378(16) (Å), β= 105.584(6)°. The asymmetric unit of the crystal structure contains three zinc(II) ions, three BIBPh ligands and two BTC3- monodentate ligands with all three deprotonated carboxylate groups that balance the overall charge. All zinc centers have similar coordination environment: each metal ion is four coordinated exhibiting a slightly distorted tetrahedral coordination, where two positions are occupied by oxygen atoms of the carboxylic acid and the other two by nitrogen atoms of imidazole subunits |
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Cuvinte-cheie Coordination polymer, X-ray diffraction, Zinc, 1, 2, 3-benzenetricarboxylic acid, 4, 4ʹ-bis(imidazol-1-ylmethyl)biphenyl. |
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