2012
DOI: 10.1080/00958972.2012.654786
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Construction of three metal-organic frameworks based on multifunctional T-shaped tripodal ligands (4,5-dicarboxy-1H-imidazol-2-yl)pyridine-1-oxide

Abstract: Three metal-organic frameworks, [Eu(C 10 H 6 N 3 O 5 ) 3 (H 2 O) 2 ] Á H 2 O (1), [Tb(C 10 H 6 N 3 O 5 ) 3 (H 2 O) 2 ] Á H 2 O (2), and [Cd(C 10 H 6 N 3 O 5 ) 2 Cl 2 ](3) based on T-shaped tripodal ligands 3-(4,5-dicarboxy-1H-imidazol-2-yl)pyridine-1-oxide and 4-(4,5-dicarboxy-1H-imidazol-2-yl)pyridine-1-oxide (H 3 DCImPyO), have been synthesized by the hydrothermal method and characterized by elemental analysis, IR, and single-crystal X-ray structure analysis. The diverse coordination modes of H 3 DCImPyO li… Show more

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Cited by 26 publications
(4 citation statements)
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“…Thus, solid-state photoluminescence of 1-3 as well as free H 2 PDA and H 3 CAM were measured at room temperature and the emission spectra are shown in figure 9, displaying interesting photoluminescent properties as other Cd(II) complexes [32][33][34][35][36][37][38]. Upon excitation at 318 nm, 1 displays an intense UV radiation with λ max at 415 nm, and the free H 2 PDA also shows a weak emission at 340 nm [ figure 9(a)].…”
Section: Photoluminescent Propertiesmentioning
confidence: 99%
“…Thus, solid-state photoluminescence of 1-3 as well as free H 2 PDA and H 3 CAM were measured at room temperature and the emission spectra are shown in figure 9, displaying interesting photoluminescent properties as other Cd(II) complexes [32][33][34][35][36][37][38]. Upon excitation at 318 nm, 1 displays an intense UV radiation with λ max at 415 nm, and the free H 2 PDA also shows a weak emission at 340 nm [ figure 9(a)].…”
Section: Photoluminescent Propertiesmentioning
confidence: 99%
“…The tendency to coordinate the oxygen atom of a heterocyclic N-oxide group is generally favored in most transition metal complexes [20][21][22][23], largely due to the hardness of the N-oxide as a donor. Strategies for orienting the oxygen atom of the N-oxide group externally on a metal complex (that is, not coordinated to the metal) may include utilizing ligands with favorable coordination sites away from the N-oxide or oxidizing the exposed external nitrogen atom of a coordinated ligand [24][25][26][27][28][29][30][31][32]. For the former, ligands such as 5-methypyrazine-2-carboxylate (5 mpca) and its corresponding N-oxide (Acipimox, 5 mp-caO, Figure 1) may be promising [33].…”
Section: Introductionmentioning
confidence: 99%
“…Lanthanide ions have been employed in preparation of coordination polymers with interesting networks and properties because of higher coordination numbers and inherent flexibility [17,[22][23][24][25][26][27][28][29]. Lanthanide-based coordination polymers can possess interesting luminescent properties, which may offer applications in chemical sensing, medical imaging, radiation detection, biological, and electro-optical devices [30][31][32][33][34][35][36][37][38][39]. Multidentate organic polycarboxylates, such as 1,2-benzenedicarboxylate [40][41][42][43], 1,3,5-benzenetricarboxylate [44][45][46][47], and 1,2,4,5-benzenetetracarboxylate [48][49][50], have been used for construction of coordination polymers with multidimensional networks.…”
Section: Introductionmentioning
confidence: 99%