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1.
Nitroxide derivatives of C60 and C70 were obtained by [3+2] cycloaddition of 4-(4-azidophenyl)-2,2,5,5-tetramethyl-3-oxy-2,5-dihydroimidazol-1-oxyl to fullerenes. The products were isolated by TLC and studied by EPR and optical spectroscopy. Molecular rotation of the adducts was shown to slow down on successive addition of the nitroxides, rotational correlation times depending nearly linearly on the number of the nitroxides added. Investigation of photochemical stability of nitroxide derivatives of C60 and C70 in benzene-ethanol medium reveal that the dissolved oxygen quenches efficiently the excitation of nitroxide (λ = 250–400 nm). In the absence of oxygen photoexcitation converts nitroxides to diamagnetic products, presumably, hydroxylamines formed through the interaction with the solvent. 相似文献
2.
V. I. Sokolov V. V. Bashilov N. V. Abramova K. K. Babievsky A. G. Ginzburg 《Russian Chemical Bulletin》2009,58(3):562-565
Palladium and platinum complexes of fulleienes C60 and C70 containing the axially chiral ligand (—)-BITIANP (BITIANP is 2,2’-bis(diphenylphosphino)-3,3’-bi(benzo[b]thiophene)) and pynolidino[60]fullerene bearing a planar chiral organometallic π-complex substituent in the heteiocyclic
ring were studied by circular dichroism (CD) spectroscopy. 相似文献
3.
K. N. Semenov V. I. Seregin O. V. Arapov N. A. Charykov 《Russian Journal of Applied Chemistry》2004,77(10):1627-1630
Sorption of fullerenes C60 and C70 from o-xylene, toluene, and dichlorobenzene solutions on NORIT-AZO carbons was studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 10, 2004, pp. 1638–1642.Original Russian Text Copyright © 2004 by Semenov, Seregin, Arapov, Charykov. 相似文献
4.
5.
V. P. Gubskaya K. L. Nodov F. G. Sibgatullina G. M. Fazleeva I. E. Ismaev Sh. K. Latypov Yu. Ya. Efremov I. A. Nuretdinov 《Russian Chemical Bulletin》2007,56(9):1843-1848
Reactions of fullerene C60 with fluorene-2-carbaldehyde or 2,7-diacetylfluorene in toluene gave novel spiromethanofullerenes containing a reactive free
formyl group. A novel fluorene-containing fullerenopyrrolidine was obtained by the Prato reaction. The purity and compositions
of the compounds obtained were confirmed by MALDI TOF mass spectrometry and HPLC. Their structures were confirmed by 2D homo-and
heterocorrelation NMR techniques.
Dedicated to Academician G. A. Abakumov on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1780–1785, September, 2007. 相似文献
6.
B. B. Troitskii L. V. Khokhlova A. N. Konev V. N. Denisova M. A. Novikova 《Russian Journal of Applied Chemistry》2004,77(12):2022-2024
The inhibiting effect of fullerenes on thermal oxidative degradation of copolymers of methyl methacrylate with methacrylic acid and methacrylamide at 340°C was studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2047–2049.Original Russian Text Copyright © 2004 by Troitskii, Khokhlova, Konev, Denisova, Novikova. 相似文献
7.
D. N. Nikolaev P. B. Davidovich L. B. Piotrovskii 《Russian Journal of Organic Chemistry》2016,52(7):1050-1053
3′H-Cyclopropa[1,9](C60-Ih)[5,6]fullerene-3′-carboxylic acid can be synthesized in a good yield by cyclopropanation of fullerene C60 with 2-(dimethyl-λ4-sulfanylidene)acetates provided that the ester residue is readily hydrolyzable in acid medium. 相似文献
8.
V. P. Gubskaya F. G. Sibgatullina V. V. Yanilkin V. I. Morozov A. V. Toropchina V. V. Zverev N. M. Azancheev I. A. Nuretdinov 《Russian Chemical Bulletin》2005,54(6):1467-1472
The reactions of fullerene C60 with substituted haloketones, including organophosphorus haloketones, in the presence of bases afforded new methanofullerenes
containing carbonyl or carbonyl and acetal groups. The structures of the resulting compounds were established by spectroscopic
methods. Their electrochemical reduction and oxidation were studied by cyclic voltammetry and ESR spectroscopy. The three-dimensional
structures were calculated by the PM3 and DFT/PBE/TZ2P methods.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1424–1429, June, 2005. 相似文献
9.
S. I. Troyanov N. B. Shustova A. A. Popov L. N. Sidorov 《Russian Chemical Bulletin》2005,54(7):1656-1666
Systematic study of chlorination of fullerene C60 with inorganic chlorides SbCl5, VCl4, MoCl5, and KICl4 was carried out. Higher chlorofullerenes, viz., T
h
-C60Cl24, C60Cl28, C
2-C60Cl30, and D
3d
-C60Cl30, can be prepared depending on the temperature and time of chlorination. The molecular and crystal structures of C60Cl24⋅VOCl3, C60Cl30⋅2CS2, and C60Cl30O1.22 were determined by single-crystal X-ray diffraction. Fullerenes C60Cl28 and C
2-C60Cl30 were shown to be only kinetically stable, whereas D
3d
-C60Cl30 is a thermodynamically stable product. Transformations of less chlorinated fullerenes into more chlorinated products are
accompanied by substantial changes in the addition patterns.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1608–1618, July, 2005. 相似文献
10.
V. I. Ladyanov V. V. Aksenova R. M. Nikonova 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2010,84(9):1548-1553
Features of the oxidation of C60 and C70 fullerites were studied by infrared spectroscopy. It was shown that for C60 fullerite, the presence of toluene residue reduces the temperature at which oxidation starts. The form of the toluene (solvate
or nonsolvate) is not important. A low-frequency shift in the valence C-O-C vibrations of C70 fullerene due to local steric strains was discovered. 相似文献
11.
M. A. Eremina R. M. Nikonova V. I. Lad’yanov V. V. Aksenova 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2009,83(11):1924-1934
The structural and phase state of the C60-C70 system at various C60/C70 ratios in mixtures obtained by the vaporization of solutions in toluene at ∼98°C was studied by X-ray structure analysis,
differential scanning calorimetry, and infrared spectroscopy. Solid solutions based on the face-centered cubic packing of
C60 are not formed in the C60-C70 system at C70 contents from 0.5 to 50 wt %. The hexagonal close packing of a solid solution of C60 in C70 can be formed as a result of the thermally activated decomposition of the ternary crystal solvate in the C60-C70-C6H5CH3 system. The structural state of multiphase mixtures formed under conditions far from equilibrium is characterized by a high
degree of structure imperfection and greater ability to undergo oxidation compared with C60 and C70. 相似文献
12.
13.
L. I. Denisovich S. M. Peregudova Yu. N. Novikov 《Russian Journal of Electrochemistry》2010,46(1):1-17
t-The electrochemical properties of exohedral complexes of transition metals with metallofragments coordinated to C60 and C70 fullerene ligands in different coordination modes are surveyed. The effect of the nature, composition, and structure of metal-containing
fragments on the electrochemical properties of these complexes and stability of products formed in the oxidation and reduction
of complexes is discussed. 相似文献
14.
O. E. Glukhova 《Journal of Structural Chemistry》2007,48(1):S141-S146
The equilibrium state of the C60@C450 nanoparticle was studied. The compound was found to be stable during the encapsulation of C60 tubelene. The motions of tubelene in the confinement potential field of a closed C450 nanotube, namely, the translational motion along the tubule axis and the rotational motion were investigated in detail. It is predicted that there is a nanogyroscope inside C450, rotating in the field of the C60 capsule. Its quantized rotational states were calculated. The nanoparticle structure and energy were investigated by the tight binding method using modified parameters. 相似文献
15.
A. F. Shestakov 《Russian Journal of General Chemistry》2008,78(4):811-821
The results of a quantum-chemical study of the reactivity of fullerene C60 in such reactions as polymerization (dimerization), cycloaddition, addition of valence-saturated molecules are presented. The mechanisms of these reactions are also discussed. 相似文献
16.
S. A. Torosyan F. A. Gimalova V. V. Mikheev A. A. Fatykhov Yu. N. Biglova M. S. Miftakhov 《Russian Journal of Organic Chemistry》2011,47(12):1807-1810
Mono-, bis-, tris-, tetrakis-, and hexakis-substituted cyclopropanation products of fullerene C60 with diallyl malonate were synthesized according to Bingel-Hirsch. Except for the monocyclopropanation product, all other
adducts were isolated as mixtures of regioisomers. 相似文献
17.
K. N. Semenov O. V. Arapov N. A. Charykov K. V. Nekrasov O. S. Alekhin V. I. Gerasimov V. I. Seregin 《Russian Journal of Applied Chemistry》2005,78(2):340-341
Sorption of fullerenes C60 and C70 from o-xylene, toluene, and o-dichlorobenzene solutions under static conditions on a sorbent prepared by sublimation of graphite rods was studied. The sorption isotherms of both fullerenes at 25°C were measured.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 2, 2005, pp. 345–346.Original Russian Text Copyright © 2005 by Semenov, Arapov, Charykov, Nekrasov, Alekhin, Gerasimov, Seregin. 相似文献
18.
(U)PBE0/cc-pVDZ method is used to study the structure of C60Cl30, C60(OH)30 molecules and Fe@C60(OH)30 endocomplex. The triplet state of the endocomplex is shown to be the lowest in energy among its four states corresponding to different spin multiplicities and positions of Fe nucleus within the fullerene cavity. This state is characterized by bonding between the iron atom and one of two benzenoid cycles of the carbon cage, six internuclear Fe–C distances (208 pm), and 1s22s22p63s23p63d7.24s0.14p0.3 electron configuration of iron with spin population of 2.36. 相似文献
19.
D. V. Postnov V. N. Postnov I. V. Murin N. A. Mel’nikova K. N. Semenov 《Russian Journal of General Chemistry》2016,86(4):894-896
Nafion-based composite solid polyelectrolytes containing fullerene C60 and its water-soluble derivatives fullerenol-C60 and tris-malonate-C60 were studied by the impedance spectroscopy method. It was found that introduction of these dopants in Nafion leads to a substantial increase in proton conductivity of the composites in the region of low relative humidity. The reasons for the influence of dopants on proton conductivity of composites were discussed. 相似文献