Structural and Luminescent Properties of [N‐benzyl‐N‐(2‐pyridyl)methylamine]dichlorozinc(<scp>II</scp>): Dual Fluorescence of N‐benzyl‐N‐(2‐pyridyl)methylamine

Song, Young-Kwang; Kang, Sung Kwon; Kim, Young-Inn

doi:10.1002/bkcs.10015

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…[28][29] In addition, as a consequence of the crucial role played by Zn II ions in several biological processes and diseases associated with the variation of its concentration, [30][31][32][33][34][35][36] pma-based platforms have been used as model ligands in molecular recognition, fluorescent probes and imaging agent. 1,[37][38][39][40][41][42] In this context, both the coordination mode and the geometry of pma-Zn II complexes are key elements to study in order to fully understand and/ or predict their behaviour and reactivity. Indeed, tiny modifications of the coordination sphere are known to affect the reactivity of Zn species within the active sites of Zn-containing enzymes, deeply impact catalytic activities and induce conformational modifications.…”

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confidence: 99%

“…Indeed, tiny modifications of the coordination sphere are known to affect the reactivity of Zn species within the active sites of Zn-containing enzymes, deeply impact catalytic activities and induce conformational modifications. [43][44][45] While the preparation of pma-ZnCl2 complexes and the description of their properties accompanied by solid state data were disclosed in a few reports, 28,37 the pma-ZnBr2 complexes are more scarcely described. 46,47 In this communication we focused on the preparation of pma-ZnBr2 complexes based on N,N-bidentate ligands.…”

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confidence: 99%

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Deciphering preferred geometries of pyridylmethylamines-based complexes: A robust strategy combining NMR, DFT and X-ray

Large

Meddeb

Pucheta

et al. 2019

Inorganica Chimica Acta

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The preparation of pyridylmethylamines (pma)-ZnBr2 and -CoBr2 complexes is described. Accurate structural informations in both solution and solid state have been obtained using an approach combining advanced NMR such as pure shift gradient-encoded selective refocusing (PS-GSERF) and conventional NOESY experiments, DFT calculations and X-ray analysis. The methodology developed has allowed a clear identification and characterization of preferred conformations and configurations at an atomic resolution. Our study has evidenced some key features of the overall 3D structure of pma-Zn and pma-Co complexes which shapes are set by the geometry of the metallacycle, the configuration of the sp 3 nitrogen atom, the equatorial position of the benzyl side arm as well as the preferred spatial arrangement of the chiral side arm with respect to the metallacycle.

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confidence: 99%

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confidence: 99%

Deciphering preferred geometries of pyridylmethylamines-based complexes: A robust strategy combining NMR, DFT and X-ray

Large

Meddeb

Pucheta

et al. 2019

Inorganica Chimica Acta

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“…The H-tdpaq ligand was synthesized by modifying the reported literature method for H-dpaq ligand in which N -benzyl- N -(2-pyridyl)methylamine was used instead of N,N ′-dipicolylamine as the starting material (Scheme S2). N -Benzyl- N -(2-pyridyl)methylamine was synthesized by the published procedure …”

Section: Methodsmentioning

confidence: 99%

“…N-Benzyl-N-(2-pyridyl)methylamine was synthesized by the published procedure. 39 Instrumentation. UV−vis spectra were recorded on a Hewlett-Packard 8453 diode array spectrophotometer equipped with a UNISOKU Scientific Instruments Cryostat USP-203A for low-temperature experiments or on a UNISOKU RSP-601 stopped-flow spectrometer equipped with a MOStype highly sensitive photodiode array.…”

Section: ■ Conclusionmentioning

confidence: 99%

Nonlinear Acid Promotion of Oxidation Reactions by Mononuclear Nonheme Iron(III)-Aqua Complexes

Nilajakar,

Lee,

Fukuzumi

et al. 2023

ACS Catal.

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Acids are known to promote oxidation of substrates by metal complexes that have a metal–oxygen bond such as metal-oxo, -hydroxo, -peroxo, -hydroperoxo, -superoxo, and -aqua complexes. Binding more than one acid molecule to metal–oxygen intermediates is expected to enhance the oxidation reactivity, exhibiting a higher-order dependence of the rate constant on the acid concentration than the first order. Such nonlinear acid promotion may open a new frontier of acid-promoted redox reactions as nature has already developed in contrast to artificial systems. Herein, we report that binding of not only one but also two triflic acid (HOTf) molecules to nonheme Fe(III)-aqua complexes, [(dpaq)FeIII(OH2)]2+ {1: dpaq = 2-[bis(pyridin-2-ylmethyl)]amino-N-(quinolin-8-yl)acetamidate} and [(tdpaq)FeIII(OH2)]2+ {2: tdpaq = 2-[benzyl(pyridin-2-ylmethyl)amino]-N-(quinolin-8-yl)acetamidate}, results in enhancement of the oxidation reactivity of the iron(III)-aqua complexes to exhibit the first- and second-order dependence of the rate constant on concentration of HOTf. The rate constants of electron transfer (ET) and oxygen atom transfer of 1 and 2 exhibit the second-order dependence on [HOTf], whereas those of hydrogen atom transfer of 1 and 2 exhibit both the first- and second-order dependences on [HOTf], accompanied by the change in the deuterium kinetic isotope effects. The dependence of the logarithm of the rate constants of acid-promoted oxidation reactions by 1 and 2 on the ET driving force was well evaluated in light of the Marcus theory of outer-sphere ET to discuss the acid-promoted oxidation mechanisms by 1 and 2.

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Chemical and electrochemical synthesis, structure, photoluminescent properties, and biological activity of 4‐methyl‐N‐[2‐[(Z)‐2‐(2‐pyridyl)alkyliminomethyl]phenyl]benzenesulfamide zinc(II) complexes

Бурлов

Власенко

Koshchienko

et al. 2019

Applied Organom Chemis

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A series of Zn(II) complexes of the tridentate azomethine ligands, condensation products of 2‐(N‐tosylamino)benzaldehyde and 2‐aminoalkylpyridines, were synthesized by chemical and electrochemical methods. All compounds were characterized on the basis of C, H, N elemental analysis, Fourier‐transform infrared, 1H nuclear magnetic resonance, UV–Vis, and photoluminescence studies. The local atomic structures of complexes were determined from analysis of extended X‐ray absorption fine structure and X‐ray absorption near‐edge structure of Zn K‐edges. The molecular structure of chloro‐{4‐methyl‐N‐[2‐[(Z)‐2‐pyridyl)ethyliminomethyl]phenyl]benzenesulfamide}zinc(II) was determined by X‐ray single‐crystal diffraction. The fluorescence spectra show that these complexes in dimethyl sulfoxide solutions at room temperature emit bright blue luminescence at 435–461 nm with fluorescence quantum yields in the range of 0.20–0.31. The assignment and the nature of the bands in experimental UV–Vis spectra of complexes were analyzed using time‐dependent density functional theory calculations B3LYP/6‐31G(d). The azomethines and complexes of zinc have been screened for their antibacterial, protistocidal, and fungistatic activities against Penicillium italicum, Colpoda steinii, Escherichia coli 078, and Staphylococcus aureus P‐209, and the results are compared with the activity of furazolidone, chloroquine, and Fundazol.

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Structural and Luminescent Properties of [N‐benzyl‐N‐(2‐pyridyl)methylamine]dichlorozinc(II): Dual Fluorescence of N‐benzyl‐N‐(2‐pyridyl)methylamine

Cited by 5 publications

References 19 publications

Deciphering preferred geometries of pyridylmethylamines-based complexes: A robust strategy combining NMR, DFT and X-ray

Deciphering preferred geometries of pyridylmethylamines-based complexes: A robust strategy combining NMR, DFT and X-ray

Nonlinear Acid Promotion of Oxidation Reactions by Mononuclear Nonheme Iron(III)-Aqua Complexes

Chemical and electrochemical synthesis, structure, photoluminescent properties, and biological activity of 4‐methyl‐N‐[2‐[(Z)‐2‐(2‐pyridyl)alkyliminomethyl]phenyl]benzenesulfamide zinc(II) complexes

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