Ivan E. Kareev

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Abstract not Available.

10.1149/ma2007-01/23/965

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Электродуговой синтез сажи с высоким содержанием высших фуллеренов в "параллельной" дуге

Журнал технической физики (2016)

A. E. Dutlov В.М. Некрасов А.Г. Сергеев В. П. Бубнов Ivan E. Kareev

Электродуговой синтез сажи с высоким содержанием высших фуллеренов в "параллельной" дуге

10.21883/jtf.2016.12.43922.1644

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1,6,11,18,24,27,52,55-Octakis(trifluoromethyl)-1,6,11,18,24,27,52,55-octahydro(C₆₀-I_h)[5,6]fullerene

Acta Crystallographica Section E Structure Reports Online (2006)

Ivan E. Kareev Natalia B. Shustova Brooke Newell Susie M. Miller Oren P. Anderson

The title compound, C68F24, is one of five isomers of C60(CF3)8. It has an idealized Ih C60 core with the eight CF3 groups arranged on an asymmetric para–para–para–meta–para (p3mp) ribbon of six edge-sharing C6(CF3)2 hexagons plus an isolated p-C6(CF3)2 hexagon. There are no cage Csp3–Csp3 bonds. There are intramolecular F⋯F contacts between pairs of neighboring CF3 groups that range from 2.582 (3) to 2.647 (3) Å.

HEXA

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10.1107/s1600536806024561

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Aqueous Dispersions of Unmodified Y@C₈₂ (C_2v ) Endohedral Metallofullerene

ChemistrySelect (2017)

Ivan V. Mikheev Ivan E. Kareev Vyacheslav P. Bubnov Dmitry S. Volkov М.В. Коробов

Aqueous dispersions of an unmodified (pristine) (AFD) nY@C82 (symmetry C2v) endofullerene were produced with a nearly 100% yield relative to the initial toluene solution of the endofullerene. To the best of our knowledge, this is the first report of this kind of endofullerene aqueous dispersions. The solvent-exchange ultrasound-assisted procedure requires no modification of the endofullerene surface or addition of any stabilizing agents into the aqueous phase. The procedure is applicable to any endohedral metallofullerene aqueous dispersions suitable for biomedical applications. The resulting dispersions are stable for at least 6 months. For the produced aqueous dispersions of Y@C82, the zeta potential of ca. –42 mV shows good stability; the average diameter of clusters was as small as ca. 120 nm. Techniques for purification and purity control of nY@C82 and of the intermediate toluene solution of Y@C82 were developed. The residual quantity of organic compounds was less than 1 ppb after the purification. Based on ICP–AES, headspace GC–MS, and MALDI–TOF, a procedure to assess endofullerene concentrations in the aqueous phase was proposed.

Metallofullerene

Zeta potential

Aqueous two-phase system

10.1002/slct.201701557

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CCDC 657682: Experimental Crystal Structure Determination

The Cambridge Structural Database (2007)

Natalia B. Shustova Dmitry V. Peryshkov Ivan E. Kareev Olga V. Boltalina S.H. Strauss

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccq2ckp

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1,6,11,16,18,24,27,36-Octakis(trifluoromethyl)-1,6,11,16,18,24,27,36-octahydro(C₆₀–I_h)[5,6]fullerene deuterochloroform solvate

Acta Crystallographica Section E Structure Reports Online (2007)

Natalia B. Shustova Dmitry V. Peryshkov Ivan E. Kareev Olga V. Boltalina Steven H. Strauss

The title compound, C68F24·CDCl3, is a solvate of one of five isomers of C60(CF3)8 that have now been isolated. The fullerene molecule has an idealized Ih C60 core with the eight CF3 groups arranged in an asymmetric fashion on a para–para–para–meta–para–meta–para ribbon of edge-sharing C6(CF3)2 hexagons. There are no cage Csp3—Csp3 bonds. There are intramolecular F⋯F contacts between pairs of CF3 groups on the same hexagon, in the range 2.544 (2)–2.641 (2) Å.

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HEXA

10.1107/s1600536807031704

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Селективный синтез, выделение и характеризация С1-C70(CF3)10

V. M. Nekrasov A. E. Dutlov М.Г. Трубицын В. П. Бубнов Ivan E. Kareev

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Development of Standard Reference Samples of Aqueous Fullerene Dispersions

Journal of Analytical Chemistry (2018)