Abstract
Two new coordination polymers (CPs), namely, {[Zn(tib)(SO4)]·2H2O}n (1) and {[Cd(tib)(2,6-pydc)(H2O)]·H2O}n (2), have been hydrothermally synthesized based on the rigid 1,3,5-tris(imidazol-1-yl)benzene (tib) and 2,6-pyridinedicarboxylate (2,6-pydc2−) ligands. Both CPs were structurally characterized by single-crystal X-ray diffraction. In 1, the Zn(II) centers are connected by tib to generate a 2D → 2D polythreading honeycomb 63 bilayer structure with the SO42− as rods. The bilayers are further connected by O–H···O hydrogen bonds to result in a 3D supramolecular structure. In 2, the Cd(II) centers are coordinated by 2,6-pydc2− to form binuclear Cd2 units which are linked by µ2-tib into 1D chain. The 1D chains are further connected by O–H···O hydrogen bonds, leading to the 2D hydrogen bonded network. Finally, it shows a 2D → 3D interdigitated architecture based on the 2D hydrogen bonded layers through the uncoordinated imidazole rings of tib ligands. The thermogravimetric properties and solid-state photoluminescence of 1 and 2 were investigated.
Graphical abstract
Two new photoluminescent Zn(II) and Cd(II) coordination polymers of 1,3,5-tris(1-imidazolyl)benzene were investigated in this work.
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This work was supported by the National Natural Science Foundation of China (No. 21601105).
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Li, ZL., Feng, R., Fan, SQ. et al. Syntheses, Structures and Luminescence of Two Coordination Polymers based on 1,3,5-tris(1-imidazolyl)benzene. J Chem Crystallogr 52, 97–104 (2022). https://doi.org/10.1007/s10870-021-00895-0
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DOI: https://doi.org/10.1007/s10870-021-00895-0