The reactivity of hydrazones in the presence of Zn(II) ion: Oxidative coupling of hydrazones with alcohol and oxidative cyclization of hydrazones

Xiang, Jing; Mei, Ping

doi:10.1016/j.inoche.2012.06.023

Cited by 7 publications

(2 citation statements)

References 22 publications

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“…Conventional luminescent compounds, such as those of Ln 3+ , Zn 2+ , Cd 2+ , Cu + , and noble metals (Ru 2+ , Os 2+/6+ , Ir 3+ , Pt 2+ , Re +/5+ ), have been well-studied, and their emission properties are usually predictable. , In contrast, the luminescence properties of Pb 2+ compounds are more complicated, as their luminescence properties are susceptible to subtle variations in the coordination environment. Luminescent Pb 2+ -based compounds exhibit various theoretically feasible transitions, including (1) metal-centered (MC) s → p transition that usually occurs in a hemi-directed Pb 2+ compound, (2) ligand-to-metal charge transfer (LMCT) , and halogen to Pb 2+ charge transfer (XMCT) when halide is involved in the coordination sphere, (3) Pb 2+ -perturbed ligand-centered π → π* transition, and (4) metal-to-ligand charge transfer (MLCT) .…”

Section: Introductionmentioning

confidence: 99%

“…It is worth noting that the emissions of Pb 2+ compounds are usually phosphorescent, irrespective of the orbitals involved in the excited states because of the strong spin–orbital coupling arising from the heavy atom effect of Pb 2+ center. Though these properties may broaden the scope of their applications, Pb 2+ compounds are however much less studied, in comparison with the more extensively studied luminescent metal compounds mentioned above. , …”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Luminescent Sensor Based on the Pb²⁺ Complex Containing a Tetrazolato Ligand

et al. 2022

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5), and [Pb(L 4 )(H 2 O) 2 ] (6) have been synthesized by treatment of polydentate tetrazolato ligands with various hydrated Pb 2+ salts (HL 1 = 2-(1H-tetrazol-5-yl)pyridine, HL 2 = 3-(1H-tetrazol-5-yl)isoquinoline, HL 3 = 6-(1H-tetrazol-5-yl)-2,2′-bipyridine, and H 2 L 4 = 6,6′bis(1H-tetrazol-5-yl)-2,2′-bipyridine). These complexes have been characterized by IR, TGA, and elemental analysis. Their crystal structures have been determined by X-ray crystallography, and the phase purity of bulk samples were further confirmed by PXRD. Their luminescence properties have been investigated in detail, and their emission origin may involve ligand-centered π−π* transition, metal-centered s-p transition and charge-transfer character. It is interesting to note that 5 exhibits obviously enhanced red-shifted emission, whose photoluminescence quantum yield (PLQY = 16.5%) is much higher than the other compounds (≤2%). Most importantly, the emission property of 5 was strongly affected by temperature. When the temperature rises from 295 to 493 K, the emission maximum gradually shifts to high energy due to the loss of the aqua ligand. In contrast, when the temperature is lowered from 295 to 13 K, two emission bands were observed. The low-energy emission band exhibits a slight blue shift, while a new high-energy emission band appears at around 520 nm, which is assigned to ligand-centered phosphorescence. After removal of the coordinated aqua ligand, the emission of 5−H 2 O is very sensitive to the vapors of volatile primary amines and acids, although they have different response mechanisms. This result indicates that 5−H 2 O may be a potential multifunctional sensor for temperature, volatile amines, and acids. To decipher the emission origin, DFT calculations have also been carried out based on the structure units of these compounds.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multifunctional Luminescent Sensor Based on the Pb²⁺ Complex Containing a Tetrazolato Ligand

et al. 2022

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Synthesis, Structures, Electrochemistry, and Spectroscopy of Two Ruthenium(II) Complexes Containing [1, 2, 3]Triazolo[1, 5‐a]pyridine

Xiang¹,

Wu²

2013

Zeitschrift anorg allge chemie

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Treatment of 3‐(2‐pyridyl)1,2,3triazolo[1, 5‐a]pyridine (L1) with [RuII(CO)(PPh3)3(H)2] or [RuII(DMSO)4(Cl)2] produced the mononuclear compounds [RuII(L1)(CO)(H)(PPh3)2](PF6) (1) and [RuII(L1)3](PF6)2 (2), respectively, which were characterized by IR, UV, CV, and 1H NMR spectroscopy as well as ESI mass spectrometry. The crystal structure of 1 was determined by X‐ray crystallography and the luminescence properties of both compounds were investigated.

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Synthesis, Crystal Structures, and Luminescent Properties of a Series of Coordination Compounds bearing Quinoline‐2‐tetrazolato Ligands

Jin

et al. 2017

Zeitschrift anorg allge chemie

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Four new coordination compounds, [Cd(L1)2]n (1), [Mn(L1)2]n (2), [Zn(L1)(NA)] (3), and [Pb(L1)2(H2O)] (4) were obtained on the basis of the in‐situ ligand reactions of quinoline‐2‐carbonitrile (QCN) and NaN3 under solvothermal conditions. 1 and 2 are 1D isostructural chains, where the central metal atoms are six‐coordinate by six nitrogen atoms in a distorted octahedron. The cycloaddition reaction of QCN and NaN3 in the presence of hydrated ZnCl2 occur with the aid of the ancillary ligand nicotinic acid (NA), where NA not only provides an acidic environment but also serves as an ancillary ligand. The extended structure of 3 is a 1D ladder‐like polymer. Compound 4 is a mononuclear Pb2+ compound. All the compounds were structurally characterized by X‐ray crystallography and their luminescent properties were investigated in detail.

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The reactivity of hydrazones in the presence of Zn(II) ion: Oxidative coupling of hydrazones with alcohol and oxidative cyclization of hydrazones

Cited by 7 publications

References 22 publications

Multifunctional Luminescent Sensor Based on the Pb²⁺ Complex Containing a Tetrazolato Ligand

Multifunctional Luminescent Sensor Based on the Pb²⁺ Complex Containing a Tetrazolato Ligand

Synthesis, Structures, Electrochemistry, and Spectroscopy of Two Ruthenium(II) Complexes Containing [1, 2, 3]Triazolo[1, 5‐a]pyridine

Synthesis, Crystal Structures, and Luminescent Properties of a Series of Coordination Compounds bearing Quinoline‐2‐tetrazolato Ligands

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The reactivity of hydrazones in the presence of Zn(II) ion: Oxidative coupling of hydrazones with alcohol and oxidative cyclization of hydrazones

Cited by 7 publications

References 22 publications

Multifunctional Luminescent Sensor Based on the Pb2+ Complex Containing a Tetrazolato Ligand

Multifunctional Luminescent Sensor Based on the Pb2+ Complex Containing a Tetrazolato Ligand

Synthesis, Structures, Electrochemistry, and Spectroscopy of Two Ruthenium(II) Complexes Containing [1, 2, 3]Tri­azolo[1, 5‐a]pyridine

Synthesis, Crystal Structures, and Luminescent Properties of a Series of Coordination Compounds bearing Quinoline‐2‐tetrazolato Ligands

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Product

Resources

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Multifunctional Luminescent Sensor Based on the Pb²⁺ Complex Containing a Tetrazolato Ligand

Multifunctional Luminescent Sensor Based on the Pb²⁺ Complex Containing a Tetrazolato Ligand

Synthesis, Structures, Electrochemistry, and Spectroscopy of Two Ruthenium(II) Complexes Containing [1, 2, 3]Triazolo[1, 5‐a]pyridine