Porous Lanthanide–Organic Open Frameworks with Helical Tubes Constructed from Interweaving Triple‐Helical and Double‐Helical Chains

Sun, Yan‐Qiong; Zhang, Jie; Chen, Yongmei; Yang, Guo‐Yu

doi:10.1002/anie.200500453

Cited by 437 publications

(124 citation statements)

References 45 publications

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“…The aromatic organic ligands with carboxy groups and nitrogen donors, on one hand, have been extensively employed in the construction of inorganic/organic hybrid materials for thermal stability and, on the other hand, can result in structures with high dimensions because of the multifunctional coordination sites. [7] The structure chemistry of functional groups such as carboxylates and nitrogen-donor groups are sensitive to pH values and the protonation states of these ligands. The formation of novel coordination compounds markedly depends on the metal ions.…”

Section: Introductionmentioning

confidence: 99%

A Series of Cadmium(II) Coordination Polymers Synthesized at different pH Values

Guo

Cao

et al. 2007

Eur J Inorg Chem

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A new family of cadmium(II) coordination polymers, {[Cd(Hbic)2·(H2O)2]·2H2O}n (1), [Cd(Hbic)2]n (2), [Cd(Hbic)2·(H2O)]n (3), H2bic = 1H‐benzimidazole‐5‐carboxylic acid, has been hydrothermally prepared by the assembly of CdII with H2bic. A change in the pH values resulted in a series of compounds with different compositions and dimensionalities. Formed at the lowest pH, compound 1 has a two‐dimensional supramolecular structure, which contains 1D chains extended by hydrogen bonds. At a slightly higher pH, compound 2 is synthesized with a higher number of deprotonated carboxylate groups per cadmium atom. A further increase in the pH leads to 3D dinuclear compound 3 with yellow‐green emitting fluorescence. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

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Section: Introductionmentioning

confidence: 99%

A Series of Cadmium(II) Coordination Polymers Synthesized at different pH Values

Guo

Cao

et al. 2007

Eur J Inorg Chem

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“…Accordingly, various lanthanide MOFs with special luminescent and magnetic properties have been reported recently. 13 -16 However, the reported MOFs are mainly constructed from bridging ligands with oxygen donor atoms alone 17 or both oxygen and nitrogen donors; 18 the use of bridging ligands with only the nitrogen donor atoms to construct lanthanide MOFs is rarely reported. 19 In our previous studies, we synthesized a flexible imidazole-containing bidentate ligand 1-bromo-3,5-bis(imidazol-1-ylmethyl)benzene (bib) and obtained a series of MOFs built from bib and transition metal salts, such as Ag(I), Zn(II) and Mn(II) salts.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, crystal structure and magnetic property of a two‐dimensional herringbone‐like network with praseodymium(III) nitrate and 1‐bromo‐ 3,5‐bis(imidazol‐1‐ylmethyl)benzene (bib)

Meng

Zhang

et al. 2006

Applied Organom Chemis

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A new complex [Pr(bib) 2 (NO 3 ) 3 ] (1) was synthesized by reaction of bidentate imidazole-containing ligand 1-bromo-3,5-bis(imidazol-1-ylmethyl)benzene (bib) with Pr(NO 3 )·6H 2 O and characterized by X-ray crystallography. Complex 1 has a two-dimensional herringbone-like structure with the ligand bib serving as a bridging ligand using its two imidazolyl nitrogen atoms. Ligand bib adopts cis and trans two different conformations, and the Pr(III) atoms are bridged by bib in two different ways. Thermogravimetric analysis for complex 1 was carried out and the result shows that the complex is stable up to 180 • C. Variable-temperature magnetic susceptibility of complex 1 was measured between 1.8 and 300 K and the result shows that the χ M T value decreases continuously over the whole temperature range.

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“…In general, using rigid multidentate organic ligands containing N-and O-donors makes it possible to direct the self-assembly process, to a certain extent. In recent years, some rigid heterocyclic dicarboxylic acids such as pyridine-3,4-dicarboxylic acid, pyrazine-2,3-dicarboxylic acid and imidazole-4,5-dicarboxylic acid have received considerable attention and have been used to react with metal centers to form multidimensional metal coordination polymers with intriguing topological structures [8][9][10][11][12][13]. 1H-1,2,3-triazole-4,5-dicarboxylic acid (H 3 TDA) is a multidentate N-and O-donor ligand that can be deprotonated to generate H 2 TDA  , HTDA 2 , and TDA 3 with versatile metal-binding and hydrogen-bonding capabilities.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of two novel coordination polymers based on the rigid 1H-1,2,3-triazole-4,5-dicarboxylic acid ligand

Yuan

Shao

et al. 2010

Sci. China Chem.

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Two novel three-dimensional (3-D) coordination polymers, [Pb(HTDA)] n (1) and [Co 5 (TDA) 2 (H 2 TDA) 2 (H 2 O) 8 ] n (2) [H 3 TDA = 1H-1,2,3-triazole-4,5-dicarboxylic acid], have been prepared by hydrothermal reactions and characterized by elemental analysis, infrared spectroscopy and single-crystal X-ray diffraction. Compound 1 is constructed from rod-shaped secondary building units (SBUs) and exhibits a 3-D network with (4 10 ·6 5 )(4 10 ·6 3 ·8 2 ) topology. Compound 2 is built up from ligands bridging three different cobalt ions and exhibits a 3-D network with (4·8 2 ) 3 (4·8 2 ·10 3 ) topology. In addition, the thermal stabilities of the two compounds, the photoluminescence properties of compound 1 and the magnetic properties of compound 2 have been studied. coordination polymer, hydrothermal reaction, 1H-1,2,3-triazole-4,5-dicarboxylic acid, secondary building units, transition metal

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Porous Lanthanide–Organic Open Frameworks with Helical Tubes Constructed from Interweaving Triple‐Helical and Double‐Helical Chains

Cited by 437 publications

References 45 publications

A Series of Cadmium(II) Coordination Polymers Synthesized at different pH Values

A Series of Cadmium(II) Coordination Polymers Synthesized at different pH Values

Synthesis, crystal structure and magnetic property of a two‐dimensional herringbone‐like network with praseodymium(III) nitrate and 1‐bromo‐ 3,5‐bis(imidazol‐1‐ylmethyl)benzene (bib)

Synthesis and characterization of two novel coordination polymers based on the rigid 1H-1,2,3-triazole-4,5-dicarboxylic acid ligand

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