Identifying a Needle in a Haystack: Isolation and Structural Characterization of Er 2 C 94 as the Carbide Er 2 C 2 @D 3 (85)-C 92 .

Autor: Stevenson S; Department of Chemistry, Purdue University Fort Wayne, 2101 E. Coliseum Blvd, Fort Wayne, IN, 46805, USA., Tepper KR; Department of Chemistry, Purdue University Fort Wayne, 2101 E. Coliseum Blvd, Fort Wayne, IN, 46805, USA., Davison CM; Department of Chemistry, Purdue University Fort Wayne, 2101 E. Coliseum Blvd, Fort Wayne, IN, 46805, USA., Powers XB; Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA., Olmstead MM; Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA., Balch AL; Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2018 Sep 12; Vol. 24 (51), pp. 13479-13484. Date of Electronic Publication: 2018 Aug 28.
DOI: 10.1002/chem.201802996
Abstrakt: A method has been developed for isolating a pure sample of Er 2 C 94 from the myriad of fullerenes and endohedral fullerenes that are formed in the electric arc process. Crystallographic analysis of Er 2 C 94 in a cocrystal formed with Ni(OEP) reveals that the molecule is the carbide Er 2 C 2 @D 3 (85)-C 92 . Crystals of Er 2 C 2 @D 3 (85)-C 92 ⋅Ni(octaethylporphyrin)⋅2 C 7 H 8 are isostructural with those of Sm 2 @D 3 (85)-C 92 ⋅Ni(octaethylporphyrin)⋅2 (chlorobenzene). Comparisons are made between the four crystallographically characterized endohedrals (Er 2 C 2 @D 3 (85)-C 92 , Gd 2 C 2 @D 3 (85)-C 92 , La 2 C 2 @D 3 (85)-C 92 , and Sm 2 @D 3 (85)-C 92 ) that utilize the chiral D 3 (85)-C 92 cage.
(© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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