Coordination compounds of ambidentate 1-(H)alkyl-2-(2-pyridyl)benzimidazoles. Synthesis and crystal structure

Бурлов, А. С.; Анцышкина, А. С.; Sadkov, G. G.; Chesnokov, V. V.; Koshchienko, Yu. V.; Гарновский, Д. А.; Васильченко, И. С.; Ураев, А. И.; Бородкин, Г. С.; Сергиенко, В. С.; Гарновский, А. Д.

doi:10.1134/s1070328410120079

Cited by 5 publications

(4 citation statements)

References 32 publications

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“…The coordination of congener bidentate pyridyl-imidazole ligands to zinc(II) ions has been described previously for a number of polymeric and molecular complexes. [47][48][49][50][51][52][53][54] Treatment of ligands L1-L3 with ZnX 2 salts in dichloromethane/methanol or diethyl ether mixtures at room temperature afforded the corresponding complexes Zn(L1)X 2 (1X, X = Cl 1Cl, I 1I, OAc 1OAc), Zn(L2)X 2 (2X, X = Cl 2Cl, I 2I, OAc 2OAc) and Zn 2 (L3)(OAc) 4 (3OAc), which were isolated as stable crystalline solids (75-97%), Scheme 1. The halide congeners of 3OAc are very poorly soluble that prevented their purification and characterization.…”

Section: Preparation Of Zinc Complexesmentioning

confidence: 99%

Diversifying the luminescence of phenanthro-diimine ligands in zinc complexes

Temerova

Kisel

Eskelinen

et al. 2021

Inorg. Chem. Front.

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Section: Preparation Of Zinc Complexesmentioning

confidence: 99%

Diversifying the luminescence of phenanthro-diimine ligands in zinc complexes

Temerova

Kisel

Eskelinen

et al. 2021

Inorg. Chem. Front.

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“…A new peak of 4.48 ppm can be observed in the 1 H NMR spectrum of CMPS in Figure 4 a compared to that of PS in Figure 2 b, which can be assigned to the chemical shift of chloromethyl group protons on benzene rings. However, this peak is absent in the 1 H NMR spectrum of PS-PBI, as shown in Figure 4 b, while a peak at 6.06 ppm corresponding to the chemical shift of methylene protons appears [ 38 ]. Meanwhile, the new peaks between 7.70 ppm and 8.60 ppm assigned to the pyridine ring protons are observed [ 39 , 40 ].…”

Section: Resultsmentioning

confidence: 99%

Conversion of Waste Expanded Polystyrene into Blue-Emitting Polymer Film for Light-Emitting Diode Applications

Su,

Lin,

et al. 2023

Polymers

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The wide range of applications and continuous demand for plastics is causing serious global environmental problems. Massive discharges of expanded polystyrene (EPS) are thought to be primarily responsible for the increased white pollution. Waste EPS has received wide attention in the development of innovative products. White light-emitting diodes pumped by a near-UV chip (n-UV WLEDs) are regarded as a very promising solid-state lighting. The performance of the n-UV WLED is largely determined by the properties of the tricolor luminescence materials. In this work, a blue-emitting polymer film for n-UV WLED applications was developed from waste EPS. First, using waste EPS as a raw material, benzimidazole groups were bonded to PS benzene rings by chemical reactions to obtain modified PS (PS-PBI). Then, a film based on PS-PBI was prepared by a simple solution drop-casting method. The PS-PBI film can emit intense blue light when irradiated with 365 nm light. An n-UV WLED pumped by a 365 nm UV chip was fabricated using PS-PBI film as the blue-emitting layer. The fabricated n-UV WLED shows excellent luminescence properties, such as a bright white light with color coordinates of (0.337, 0.331), a relatively low color temperature (CCT, 5270 K), and an especially high color rendering index (CRI, 93.6). The results prove that the blue-emitting PS-PBI film prepared from waste EPS is a very promising candidate for n-UV WLED applications. The strategy of converting waste EPS into a high-value-added blue-emitting film in this work provides a convenient and feasible approach for upcycling waste EPS, achieving significant environmental and economic benefits.

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“…1 Methyl 2 (2 pyridyl)benzimidazole C 13 N 3 H 11 (L 1 ) was prepared according to the procedure reported in [8].…”

Section: Triethylammoniummentioning

confidence: 99%

“…Among the organic ligands, 2 substituted deriva tives of benzimidazole with substituents containing a multiple CN bond are of particular interest for the chemistry of complex compounds [8]. This is explained by the presence of donor nitrogen atoms of different nature in their structures, the potential ability to act as tridentate ligands, and the pharmacological properties that allow one to use complexes prepared on their basis in medicine, agriculture, and some fields of industry.…”

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confidence: 99%

Cobalt(II) and nickel(II) complexes with 1-methyl-2-pyridin-2-yl-1H- and 1-methyl-2-phenyliminomethyl-1H-benzimidazoles and the closo-decaborate anion

Авдеева

Polyakova

Гоева

et al. 2015

Russ. J. Inorg. Chem.

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Synthesis of cobalt(II) and nickel(II) complexes with the closo decaborate anion and benzimida zole derivatives (L 1 = C 13 N 3 H 11 , L 2 = C 15 N 3 H 13 ) of the general formula [ML 3 ][B 10 H 10 ] (M = Co, Ni) is described. Complexes have been characterized by elemental analysis, IR and UV spectroscopy. The structure of a [Ni(L 1 ) 3 ][B 10 H 10 ] ⋅ 1.797CH 3 CN single crystal has been determined by X ray diffraction. The imidazole and pyridine N atoms of three L 1 molecules, two of which are disordered, form the distorted octahedral envi ronment of the Ni atom. In the crystal, the majority of complexes [Ni(L 1 ) 3 ] 2+ have the meridional configu ration. The Ni-N bonds with the imidazole nitrogen atoms (2.010(4)-2.076(3) Å) are shorter than those with the pyridine atoms (2.132(4)-2.179(5) Å). This nonequivalence of the Ni-N bonds is responsible for the low magnetic susceptibility of the compound.

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Coordination compounds of ambidentate 1-(H)alkyl-2-(2-pyridyl)benzimidazoles. Synthesis and crystal structure

Cited by 5 publications

References 32 publications

Diversifying the luminescence of phenanthro-diimine ligands in zinc complexes

Diversifying the luminescence of phenanthro-diimine ligands in zinc complexes

Conversion of Waste Expanded Polystyrene into Blue-Emitting Polymer Film for Light-Emitting Diode Applications

Cobalt(II) and nickel(II) complexes with 1-methyl-2-pyridin-2-yl-1H- and 1-methyl-2-phenyliminomethyl-1H-benzimidazoles and the closo-decaborate anion

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