Syntheses, structures and properties of five entangled coordination polymers constructed with trigonal N-donor ligands

Based on the mixed-ligand system, five new entangled coordination polymers have been synthesized, namely, [Co 1.5 (1,3-bdc) 1.5 (tib)(H 2 O)] ( 1 ), [Ni(1,3-bdc)(tib)(H 2 O) 2 ]·0.5H 2 O ( 2 ), [Cu(Hbtc)(Htpim)] ( 3 ), [Co(bpndc)(pytpy)(H 2 O)]·0.5H 2 O ( 4 ), and [Ni(bpndc)(pytpy)(H 2 O)]·0.5H 2 O...

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Bibliographic Details
Published in:RSC advances 2016, Vol.6 (7), p.5729-5738
Main Authors: Chen, Yu, Yang, Juan, Wang, Xi-Chi, Xu, Yu-Ci, Xu, Hui-Ling, Zeng, Xiao-Shan, Xiao, Dong-Rong
Format: Article
Language:English
Subjects:
Arrays
Construction
Coordination polymers
Diffraction
Displays
Infrared spectroscopy
Ligands
Two dimensional
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Summary:Based on the mixed-ligand system, five new entangled coordination polymers have been synthesized, namely, [Co 1.5 (1,3-bdc) 1.5 (tib)(H 2 O)] ( 1 ), [Ni(1,3-bdc)(tib)(H 2 O) 2 ]·0.5H 2 O ( 2 ), [Cu(Hbtc)(Htpim)] ( 3 ), [Co(bpndc)(pytpy)(H 2 O)]·0.5H 2 O ( 4 ), and [Ni(bpndc)(pytpy)(H 2 O)]·0.5H 2 O ( 5 ), (1,3-bdc = 1,3-benzenedicarboxylate, btc = 1,3,5-benzenetricarboxylate, bpndc = 4,4′-benzophenone dicarboxylate, tib = 1,3,5-tris(1-imidazolyl)benzene, Htpim = 2,4,5-tri(4-pyridyl)-imidazole, pytpy = 2,4,6-tris(4-pyridyl)pyridine). Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectroscopy and TG analyses. Compound 1 exhibits a new trinodal (3,4,4)-connected 3D self-penetrating framework with (8 3 ) 2 (6 3 .8 2 .9) 2 (8 4 .9.10) topology. Compound 2 displays an interesting 2D → 3D polythreading framework constructed from sidearm-containing 2D 6 3 - hcb nets. Compound 3 exhibits an unusual (2D → 3D) entangled array with the coexistence of polythreading and interdigitation self-assembled from sidearm-containing 2D double-edged nets. Compounds 4 and 5 both show an intriguing 3-fold interpenetrated PtS-type (4,4)-connected 3D framework containing meso -helices. In addition, the magnetic properties of compounds 1–5 have been investigated in the temperature range 2–300 K.
ISSN:2046-2069
2046-2069
DOI:10.1039/C5RA19086J