Isolation of three isomers of Sm@C84 and X-ray crystallographic characterization of Sm@D(3d)(19)-C84 and Sm@C2(13)-C84

Journal of the American Chemical Society
Hua YangAlan L Balch

Abstract

Three isomers with the composition Sm@C(84) were isolated from carbon soot obtained by electric arc vaporization of carbon rods doped with Sm(2)O(3). These isomers were labeled Sm@C(84)(I), Sm@C(84)(II), and Sm@C(84)(III) in order of their elution times during chromatography on a Buckyprep column with toluene as the eluent. Analysis of the structures by single-crystal X-ray diffraction on cocrystals formed with Ni(II)(octaethylporphyrin) reveals the identities of two of the isomers: Sm@C(84)(I) is Sm@C(2)(13)-C(84), and Sm@C(84)(III) is Sm@ D(3d)(19)-C(84). Sm@C(84)(II) can be identified as Sm@C(2)(11)-C(84) on the basis of the similarity of its UV/vis/NIR spectrum with that of Yb@C(2)(11)-C(84), whose carbon cage has been characterized by (13)C NMR spectroscopy. Comparison of the three Sm@C(84) isomers identified in this project with two prior reports of the preparation and isolation of isomers of Sm@C(84) indicate that five different Sm@C(84) isomers have been found and that the source of samarium used for the generation of fullerene soot is important in determining which of these isomers form.

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Citations

May 3, 2013·Chemical Reviews·Alexey A PopovLothar Dunsch
Aug 26, 2015·Scientific Reports·Jinxing CuiBingbing Liu
Sep 22, 2015·The Journal of Physical Chemistry. a·Yi-Jun GuoTao Yang
Nov 1, 2016·Journal of the American Chemical Society·Fupin LiuShangfeng Yang
Dec 20, 2014·Nature Communications·Paul W DunkHarold W Kroto
Jun 9, 2014·Journal of Molecular Modeling·Elisa Jimenez-IzalJesus M Ugalde
Sep 17, 2014·Chemistry : a European Journal·Takahiro IwamotoShigeru Yamago
Aug 22, 2012·Chemical Society Reviews·Xing LuShigeru Nagase
May 20, 2021·Journal of the American Chemical Society·Runnan GuanShangfeng Yang
Aug 3, 2013·Journal of the American Chemical Society·Wenjun ZhangXing Lu
Oct 23, 2012·Journal of the American Chemical Society·Mitsuaki SuzukiTakeshi Akasaka
Jul 2, 2020·Journal of the American Chemical Society·Wenting CaiLuis Echegoyen

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