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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pershina A. G., Demin A. M., Perekucha N. A., Brikunova O. Y., Efimova L. V., Nevskaya K. V., Vakhrushev A. V., Zgoda V. G., Uimin M. A., Minin A. S., Malkeyeva D., Kiseleva E., Zima A. P., Krasnov V. P., Ogorodova L. M.
Заглавие : Peptide ligands on the PEGylated nanoparticle surface and human serum composition are key factors for the interaction between immune cells and nanoparticles
Место публикации : Colloids and Surfaces B: Biointerfaces. - 2023. - Vol. 221. - С. 112981
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The architecture of a nanoparticles' surface formed due to a modification with a ligand and protein corona formation in biofluids is critical for interactions with cells in vivo. Here we studied interactions of immune cells with magnetic nanoparticles (MNPs) covalently modified with polyethylene glycol (PEG) and their counterparts conjugated with peptides: a pH (low) insertion peptide (pHLIP) and cycloRGD as a targeting ligand in human serum. The conjugation of MNPs-PEG with pHLIP, but not with cycloRGD, enhanced the association of these particles with mononuclear phagocytic cells in vitro and in vivo. We did not find a clear difference in protein corona composition between the pHLIP-modified and parental PEGylated nanoparticles. Analysis of the effect of autologous human serum on MNP uptake by monocytes showed that the efficiency of endocytosis varies among healthy donors and depends on intrinsic properties of serum. Nevertheless, using classic blood, coagulation, biochemical tests, and anti-PEG IgG serum level, we failed to identify the cause of the observed interdonor variation. These individual differences should be taken into consideration during testing of nanotherapeutics.
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2.

Вид документа :
Шифр издания :
Автор(ы) : Shchegolkov E. V., Shchur I. V., Burgart Y. V., Saloutin V. I.
Заглавие : Polyfluorosalicylic acids as ligands for the creation of bioactive metal complexes
Место публикации : AIP conference proceedings. - 2022. - Vol. 2390. - Ст.020076
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): ligands
Аннотация: The reactions of copper(II) and cobalt(II) mixed complexes based on methyl trifluorosalicylate and 2,2’-bipyridine and 1,10-phenanthroline with 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP) as the Lewis acid were investigated. In the case of copper(II) complexes, the hydrolysis of ester fragment occurred to form heteroligand complexes of trifluorosalicylic acid and bipyridine-like ligand associated with fluorinated alcohol. The structure of complexes corresponded to [Cu(L3-H2)(bipy or phen)*(HFIP), L3 −trifluorosalicylic acid]. In contrast, cobalt(II) complexes in refluxing HFIP resulted in the complexes [Co(L1-H)2(bipy or phen)*(HFIP), L1 – methyl trifluorosalicylate], in which the ester ligand was preserved.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voinkov E. K., Drokin R. A., Fedotov V. V., Butorin I. I., Savateev K. V., Lyapustin D. N., Ulomsky E. N., Rusinov V. L., Gazizov D. A., Gorbunov E. B., Slepukhin P. A., Gerasimova N. A., Evstigneeva N. P., Zilberberg N. V., Kungurov N. V.
Заглавие : Azolo[5,1-c][1,2,4]triazines and azoloazapurines: synthesis, antimicrobial activity and in silico studies
Место публикации : ChemistrySelect. - 2022. - Vol. 7, № 5. - С. e202104253
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The present work reports on the synthesis of series of azolo[5,1-c][1,2,4]triazines and derivatives of azoloazapurines. The synthesized compounds were tested in vitro for antibacterial activity against N. gonorrhoeae and antimycotic activity against Trichophyton interdigitale, Epidermophyton floccosum, Microsporum canis and Candida albicans. It was found that 10 compounds of the series of 3-nitroazolo[5,1-c][1,2,4]triazine-4-amines 4 exhibit high antibacterial activity (MIC≤15 μg/ml), but do not exhibit antimycotic activity. For compounds active against N. gonorrhoeae, a biological target was predicted from the pharmacophore search method and homologous modeling was carried out for it. The results of molecular docking using the constructed model of dihydrofolate reductase have a good correlation with in vitro tests. Refined docking showed the similarity of the leading compounds positions in the protein active site. The formation of stable non-covalent bonds of the nitro group with the amino acid residues Lys34/Lys55 makes a major contribution to the orienting effect of ligands.
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4.

Вид документа : Статья из журнала
Шифр издания : Г/C 73
Автор(ы) : Savchuk M. I., Kopchuk D. S., Egorov I. N., Khasanov A. F., Rybakova S. S., Zyryanov G. V., Rusinov V. L., Chupakhin O. N.
Заглавие : Combination of the Snh/aza-diels–alder reactions as effective synthetic approach to 8-hydroxy(methoxy)-substituted 2-[6-(1-methylindol-3-yl)pyridin-2-yl]quinoline ligands/fluorophores
Место публикации : Russian Journal of General Chemistry. - 2021. - Vol. 91, № 5. - С. 779-784
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): aza-diels–alder reaction--1,2,4-triazines--8-methoxyquinoline--demethylation--autoclave
Аннотация: 8-Hydroxy(methoxy)-substituted 2-[6-(1-methylindol-3-yl)pyridin-2-yl]quinoline ligands were synthesized by means of combination of SNH reaction between 8-methoxy-substituted 2-(6-aryl-1,2,4-triazin-3-yl)quinolones and indole and aza-Diels–Alder reaction of the obtained 1,2,4-triazines with 2,5-norbornadiene. The demethylation of quinoline moiety of 1,2,4-triazine precursor during aza-Diels–Alder reaction in autoclave was demonstrated.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Savkov B. Y., Maksakov V. A., Virovets A. V., Peresypkina E. V., Potemkin V. A., Palko N. N.
Заглавие : Unusual synthesis of triosmium carbene clusters by tandem activation of chlorohydrocarbons and heterocyclic amines
Место публикации : European journal of inorganic chemistry. - 2021. - № 10. - С. 989–996
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The carbene ligand is assembled on a cluster core of two dichloromethane and one morpholine at room temperature, which is the first example of carbene ligands formed in this way. Clusters with a carbene ligand exist as two stable isomers, as confirmed by NMR studies and conformational analysis. Possible mechanistic pathways for the formation of clusters with carbene and enamine ligands are proposed.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shchegolkov E. V., Shchur I. V., Burgart Y. V., Slepukhin P. A., Saloutin V. I., Chupakhin O. N., Evstigneeva N. P., Gerasimova N. A., Zilberberg N. V., Kungurov N. V.
Заглавие : Copper(II) and cobalt(II) complexes based on methyl trifluorosalicylate and bipyridine-type ligands: synthesis and their antimicrobial activity
Место публикации : Polyhedron. - 2021. - Vol. 194. - С. 114900
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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7.

Вид документа :
Шифр издания : Г/U 61
Автор(ы) : Khamidullina L. A., Puzyrev I. S., Slepukhin P. A., Pestov A. V., Tobysheva P. D., Burygin G. L., Dorovatovskii P. V., Zubavichus Y. V., Mitrofanova A. V., Khrustalev V. N., Tskhovrebov A. G., Timofeeva T. V., Solari E., Nenajdenko V. G.
Заглавие : Unsymmetrical trifluoromethyl methoxyphenyl β-diketones: effect of the position of methoxy group and coordination at Cu(II) on biological activity
Место публикации : Molecules. - 2021. - Vol. 26, № 21. - Ст.6466
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): copper(ii)--diketonates--cytotoxic activity--antimicrobial activity
Аннотация: Copper(II) complexes with 1,1,1-trifluoro-4-(4-methoxyphenyl)butan-2,4-dione (HL1) were synthesized and characterized by elemental analysis, FT-IR spectroscopy, and single crystal X-ray diffraction. The biological properties of HL1 and cis-[Cu(L1)2(DMSO)] (3) were examined against Gram-positive and Gram-negative bacteria and opportunistic unicellular fungi. The cytotoxicity was estimated towards the HeLa and Vero cell lines. Complex 3 demonstrated antibacterial activity towards S. aureus comparable to that of streptomycin, lower antifungal activity than the ligand HL1 and moderate cytotoxicity. The bioactivity was compared with the activity of compounds of similar structures. The effect of changing the position of the methoxy group at the aromatic ring in the ligand moiety of the complexes on their antimicrobial and cytotoxic activity was explored. We propose that complex 3 has lower bioavailability and reduced bioactivity than expected due to strong intermolecular contacts. In addition, molecular docking studies provided theoretical information on the interactions of tested compounds with ribonucleotide reductase subunit R2, as well as the chaperones Hsp70 and Hsp90, which are important biomolecular targets for antitumor and antimicrobial drug search and design. The obtained results revealed that the complexes displayed enhanced affinity over organic ligands. Taken together, the copper(II) complexes with the trifluoromethyl methoxyphenyl-substituted β-diketones could be considered as promising anticancer agents with antibacterial properties
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Krinochkin A. P., Kopchuk D. S., Savchuk M. I., Shtaitz Y. K., Starnovskaya E. S., Gorbunov E. B., Rybakova S. S., Kudryashova E. A., Zyryanov G. V., Chupakhin O. N.
Заглавие : The synthesis of aminophenyl-substituted 2,2′-bipyridine ligands by “1,2,4-triazine” methodology
Место публикации : AIP Conference Proceedings. - 2021. - Vol. 2388, № 1. - Ст.030016
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient synthetic approach to the 2,2’-bipyridines, including those with a condensed cyclopentene fragment, having an aminophenyl substituent at the C5 or C6 positions is reported. The products were obtained via their 1,2,4-triazine analogs with a nitro group, by the subsequent transformation of their 1,2,4-triazine ring into a pyridine one and the reduction of the nitro group to the amino group.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Taniya O. S., Kopchuk D. S., Khasanov A. F., Kovalev I. S., Santra S., Zyryanov G. V., Charushin V. N., Chupakhin O. N., Majee A.
Заглавие : Synthetic approaches and supramolecular properties of 2,2′:N′,M″-terpyridine domains (N = 3,4,5,6; M = 2,3,4) based on the 2,2'-bipyridine core as ligands with k2n-bidentate coordination mode
Место публикации : Coordination Chemistry Reviews. - 2021. - Vol. 442. - Ст.213980
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moshkina T. N., Nosova E. V., Charushin V. N., Lipunova G. N., Valova M. S., Petrusevich E. F., Zalesny R., Osmialowski B.
Заглавие : Substituted 2-(2-hydroxyphenyl)–3H-quinazolin-4-ones and their difluoroboron complexes: Synthesis and photophysical properties
Место публикации : Spectrochimica acta part A: molecular and biomolecular spectroscopy. - 2021. - Vol. 252. - С. 119497
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): esipt--fluorescence--o-ligand--bf2-complex2-(2-hydroxyphenyl)–3h-quinazolin-4-ones
Аннотация: 2-(2-Hydroxyphenyl)–3H-quinazolin-4-ones with diverse substituents at phenol ring and their six-membered difluoroboron complexes have been synthesized via few-stage approach. The photophysical properties of target compounds have been investigated in two solvents as well as in the solid state. The nature of substituents and substitution point in the phenol moiety of ligands and resulting BF2-complexes on the photophysical properties of dyes have been explored. The complex bearing two t-Bu groups proved to be the most emissive in solid state, whereas its 5-methoxy and 4-diethylamino counterparts possess strong emission in toluene solution. The dyes exhibited large Stokes shifts which was attributed to excited state intramolecular proton transfer (ESIPT). Additionally, fluorescence of quinazolinones in the mixture of THF/water was studied. All ligands demonstrated emission enhancement with increase of water fraction which was due to aggregation induced emission.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moseev T. D., Nikiforov E. A., Varaksin M. V., Starnovskaya E. S., Savchuk M. I., Nikonov I. L., Kopchuk D. S., Zyryanov G. V., Chupakhin O. N., Charushin V. N.
Заглавие : Novel pentafluorophenyl- and alkoxyphenyl-appended 2,2'-bipyridine push-pull fluorophores: a convenient synthesis and photophysical studies
Место публикации : Synthesis. - 2021. - Vol. 53, № 19. - С. 3597-3607
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 2,2′-bipyridines--1,2,4-triazines--polyfluoroarenes
Аннотация: A convenient method for the synthesis of new highly in non-polar solvents soluble photoactive pentafluorophenyl-substituted and extended alkoxyphenyl-substituted 2,2′-bipyridines is reported. The synthetic strategy for the preparation of such ligands involves a sequence of several structural transformations, such as O-alkylation, nucleophilic substitution of hydrogen (SN H) in 1,2,4-triazine precursors via the ‘addition–elimination’ scheme, and the subsequent conversion of the obtained 1,2,4-triazines into 2,2′-bipyridines by means of the aza-Diels–Alder reaction. The photophysical properties of the synthesized novel pentafluoroaryl-substituted 2,2′-bipyridines were comprehensively studied. The obtained photophysical data indicate the competitive advantages of the herein reported pentafluoroarylated push–pull fluorophores, bearing extended aliphatic moieties, over their analogues containing benzoxy or phenolic fragments in terms of improvement in quantum yield and well-pronounced positive solvatochromism confirmed by the mathematical analysis according to the Lippert–Mataga equation.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Varaksin M. V., Starnovskaya E. S., Kopchuk D. S., Zyryanov G. V., Slepukhin P. A., Chupakhin O. N., Charushin V. N., Moseev T. D.
Заглавие : Single-crystal x-ray diffraction studies in a series of 5-pentafluorophenyl-2,2'-bipyridines and their fused analogs
Место публикации : Russian journal of general chemistry. - 2020. - Т. 90, № 2. - С. 235-237
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 6-aryl-5-pentafluorophenyl-2,2'-bipyridines--ligands--single-crystal x-ray diffraction analysis--structural effect
Аннотация: Structure of three 6-aryl-5-pentafluorophenyl-2,2'-bipyridines has been studied by means of single-crystal X-ray diffraction analysis. The effect of some functional fragments on the structural organization of compounds, in particular, donor and acceptor substituents in the aryl moiety, as well as annulated benzene and cyclopentane rings on the molecular structure and crystal packing of pentafluorophenyl-modified 2,2'-bipyridine ligand systems has been analyzed.
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания : Г/P 91
Автор(ы) : Krinochkin A. P., Kopchuk D. S., Santra S., Zyryanov G. V., Rusinov V. L., Chupakhin O. N.
Заглавие : Preparation of ligands for lanthanide cations based on 5-aryl-2,2-bipyridine-6-carboxylic acids with an extended conjugation system
Место публикации : Современные синтетические методологии для создания лекарственных препаратов и функциональных материалов (MOSM2018): вторая международная научно-практическая конференция : материалы и доклады. - Екатеринбург, 2019. - С. 232
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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14.

Вид документа : Статья из журнала
Шифр издания : 24/P 71
Автор(ы) : Shvachko Y. N., Starichenko D. V., Korolev A. V., Pestov A. V., Slepukhin P. A., Boukhvalov D. W.
Заглавие : Planar polycubane single-molecule magnet [NI6(pymeid)6NI12(OH)6(µ3OH)16CL2 (H2O)2]·38H2O: experiment and theory
Место публикации : Inorganica chimica acta. - 2018. - V 483. - С. 480-487
ББК : 24
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Comprehensive experimental and theoretical study of atomic and magnetic structure of the 18-nuclei complex [Ni6(pymeid)6Ni12(OH)6(µ3-OH)16Cl2 (H2O)2] 38H2O (H2pymeid – N-(2-pyridyl)methyliminodipropionic acid) with rare polycubane planar architecture is reported. Magnetic moments of NiII ions (S = 1) in the sectional metal-oxygen Ni18 core are coupled ferro- and antiferromagnetically, so that the complex is a single-molecule magnet (SMM) with the total spin in the ground state S = 10, and the blocking temperature Tb = 14.3 K. The ac – susceptibility, χ’’, obeys the Arrhenius law with the effective barrier Ueff = 18.9 cm−1 (27.2 K). QTM regime is observed at T ≤ 8 K. Magnetic anisotropy is characterized by remanent magnetization M0 = 0.7 µB and coercive field Hc = 340 Oe. Electronic structure and values of the local moments and the exchange constants are calculated in the LDA + U DFT approach. Two complementary 3-nuclei cubane fragments are linked antiferromagnetically to the main 12-nuclei ferromagnetic core. The ligands moderate the exchange couplings in the adjacent cubanes by shifting respective 3d DOS peaks of peripheral Ni ions towards lower energies.
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15.

Вид документа : Статья из журнала
Шифр издания : 54
Автор(ы) : Lipunova G. N., Nosova E. V., Charushin V. N., Chupakhin O. N.
Заглавие : Boron(III) Complexes with N,​N'- and N,​O-​Heterocyclic Ligands: Synthesis and Spectroscopic Properties
Место публикации : Comments on Inorganic Chemistry. - 2016. - Vol. 2016. - С. 1153470
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): properties --preparation-- synthetic preparation
Аннотация: This review is focused on consideration of effects of the nature of N,​N'- and N,​O-​bidentate ligands on the structure and optical properties of their B(III) complexes. It has been established that B(III) complexes with asym. N,​N'- and N,​O-​bidentate ligands, such as ortho-​hydroxyphenyl substituted azaheterocycles and heteryl-​β-​ketoimines, exhibit large Stokes shifts, enhanced intensity, and extended range for luminescence in solns. as well as in solid state, comparable with characteristics of the family of BODIPYs derivs. Complexes of some bidentate ligands can be considered as promising fluorophores for applications in biomedical imaging, electroluminescent, solar cell devices, and other fields.
\\\\expert2\\nbo\\Comments on Inorganic Chemistry\\2016. P. 1153470.pdf
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16.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Gur'eva O. A., Alekseev I.N., Zalevskaya O. A., Slepukhin P. A., Kutchin A.V.
Заглавие : Synthesis of new bidentate ligands-terpene derivatives of ethylenediamine and their palladium complexes [Электронный ресурс]
Место публикации : Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2016. - Vol. 52, № 6. - С. 781-784
Систем. требования: http://download.springer.com/static/pdf/122/
Примечания : 2.11.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): palladium chelates--drugs
Аннотация: New enantiomerically pure Schiff bases and palladium chelates based thereon were synthesized starting from (-)-alpha-pinene or (aEuro')-camphor and N,N-dimethylethane-1,2-diamine.
\\\\expert2\\NBO\\Russian Journal of Organic Chemistry\\2016, 52, (6), 781-784.pdf
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17.

Вид документа : Статья из журнала
Шифр издания : 54/N 52
Автор(ы) : Pestov A. V., Khamidullina L. A., Sosnovskikh V. Ya., Slepukhin P. A., Puzyrev I.
Заглавие : New examples of chelating triketone-like ligands that promote formation of binuclear complexes [Электронный ресурс]
Место публикации : Polyhedron. - 2016. - Vol. 106. - С. 75-83
Систем. требования: http://apps.webofknowledge.com/full
Примечания : 03.11.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): chroman-4-ones --triketone-like ligands--binuclear complexes
Аннотация: The present work is to investigate of binding properties of chelating triketone-like ligands, which are able to forming of binuclear complexes. The studied compounds are able to exist in cyclic or 'close form' (phenyl substituted or unsubstituted 2-hydroxy-2-(trifluoromethyl)chroman-4-ones) as well as in their associated 'open form' (phenyl substituted or unsubstituted 1,1,1-trifluoro-4-(2-hydroxyphenyl)butan-2,4-diones). In this paper there is good evidence for the compounds are being in solid in 'close form' (pre-ligands), whereas in basic solutions and when involved in metal ion coordination sphere they are being in 'open form' (ligands). Protolytic equilibria of the compounds in aqueous ethylene glycol solutions were studied. Schemes of acid-base equilibria of these compounds were proposed. Apparent ionization constants of compounds containing electron-donor and electron-acceptor substituents in the benzene ring were determined using spectrophotometric method. The binding properties of 1,1, 1-trifluoro-4-(2-hydroxyphenyl)butan-2,4-dione towards Cu(II), Ni(II) and Co(II) were studied. The formation of 2:2 metal-ligand complexes was observed. X-ray analysis gives evidence the formation of complexes in which the ratio metal to ligand can be 1:2 and 2:2. Similar to beta-triketones the studied ligands tends to formation of binuclear complexes with transition metal ions
\\\\expert2\\NBO\\Polyhedron\\2016, v.106, p.75-83.pdf
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18.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Nosova E. V., Moshkina T. N., Lipunova G. N., Baklanova I. V., Slepukhin P. A., Charushin V. N.
Заглавие : Synthesis, structure and photoluminescent properties of BF2 and BPh2 complexes with N,O-benzazine ligands [Электронный ресурс]
Место публикации : Journal of Fluorine Chemistry. - 2015. - Vol. 175. - С. 145-151
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 150-151 (29 ref.). - 18.01.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): n,o-bidentate ligands--bph2 complexes--bf2 complexes
Аннотация: Novel N,O-bidentate BF2 and BPh2 complexes have been prepared in good to excellent yields through coordination of 8-hydroxy-2-methylquinolines and 2-(2-hydroxyphenyl)-3H-quinazolin-4-ones with boron trifluoride etherate or triphenylborane under mild conditions. All complexes have been characterized by H-1, B-11 and F-19 NMR, mass-spectrometry and X-ray crystallography data. Some complexes have been found to exhibit a significant fluore.scence in acetonitrile solutions. Electronic and site effects of substituents in both heterocyclic and phenol fragments proved to have a profound impact on quantum yields.
\\\\expert2\\nbo\\Journal of Fluorine Chemistry\\2015,V.175, p.145-151.pdf
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19.

Вид документа : Статья из журнала
Шифр издания : 54/D 62
Автор(ы) : Varaksin M. V., Utepova I. A., Chupakhin O. N., Charushin V. N.
Заглавие : Direct nuclophilic C-H functionalization of azines and their N-oxides by lithium derivatives of aldonitrones [Электронный ресурс]
Место публикации : Tetrahedron. - 2015. - Vol. 71, №38. - С. 7077-7082
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 7082 (23 ref.). - 18.01.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): dipole-stabilized carbanions--organic-synthesis--chemical-properties;
Аннотация: Novel ligands of the azine family for complexing with metals have been obtained as a result of the uncatalyzed C-C coupling reactions of quinoline, quinoxaline, 1,10-phenantroline, and their N-oxides with (1-oxido-3-phenyl-1,4-diazaspiro[4.5]deca-1,3-dien-2-yl)lithium
\\\\expert2\\nbo\\Tetrahedron\\2015, v. 71 , p. 7077-7082.pdf
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20.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Cherprakova E. M., Verbitskiy E. V., Kiskin M. A., Aleksandrov G. G., Slepukhin P. A., Sidorov A. A., Starichenko D.V., Shvachko Yu.N., Eremenko I. L., Rusinov G. L., Charushin V. N.
Заглавие : Synthesis and characterization of new complexes derived from 4-thienyl substituted pyrimidines [Электронный ресурс]
Место публикации : Polyhedron. - 2015. - Vol. 100. - С. 89-99
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 98-99 (42 ref.). - 18.01.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): pyrimidine--cyclopalladation --magnetic-properties
Аннотация: The behavior of 4-thienyl substituted pyrimidine ligands (L1-3) has been studied for the series of their reactions with various salts of 3d metals (Co, Zn, Ni, Cu) and platinoids (Pt, Pd). In particular, mononuclear Co(OTf)(2)(L1-3)(2)(H2O)(2)(MeCN)(2) (1), binuclear Co-2(Piv)(2)(L1-3)(4) (2a,b), Cu-2(Piv)(2)(L1-3)(2) (5a,b), heterometallic polynuclear Li2Co2(Piv)(6)(L1-3)(2) (4) and chelate [(L-1)Pd(OAc)](2) (6) complexes have been obtained. The structures of all complexes have been established by X-ray diffraction. Also magnetic properties of coordination compounds 1, 2, 4 and 5 have been studied in details. In particular, mononuclear Co(II) complexes I and 4 proved to exhibit paramagnetism with large positive zero-field splitting parameters. Dinuclear Co(II) complexes 2a,b show weak antiferromagnetic interactions. Dinuclear Cu(II) complexes 5a,b demonstrate strong antiferromagnetic superexchange interactions via four carboxylate bridges. The systems 2a,b and 5a,b are isolated as exchange coupled dimers
\\\\expert2\\nbo\\Polyhedron\\2015, v.100, p.89-99.pdf
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