Identifying a Needle in a Haystack: Isolation and Structural Characterization of Er2C94 as the Carbide Er2C2@D3(85)‐C92. Issue 51 (28th August 2018)

• Record Type: Journal Article
• Authors: Stevenson, Steven; Tepper, Katelyn R.; Davison, Cody M.; Powers, Xian B.; Olmstead, Marilyn M.; Balch, Alan L.
• Is Part Of: Chemistry. Volume 24:Issue 51(2018)
• Page Start: 13479
• Page End: 13484
• Publication Date: 2018-08-28
• Subjects: carbides -- endohedral fullerene -- erbium -- purification -- X-ray crystallography; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201802996
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: A method has been developed for isolating a pure sample of Er2 C94 from the myriad of fullerenes and endohedral fullerenes that are formed in the electric arc process. Crystallographic analysis of Er2 C94 in a cocrystal formed with Ni(OEP) reveals that the molecule is the carbide Er2 C2 @ D 3 (85)‐C92 . Crystals of Er2 C2 @ D 3 (85)‐C92 ⋅ Ni(octaethylporphyrin)⋅ 2 C7 H8 are isostructural with those of Sm2 @ D 3 (85)‐C92 ⋅ Ni(octaethylporphyrin)⋅ 2 (chlorobenzene). Comparisons are made between the four crystallographically characterized endohedrals (Er2 C2 @ D 3 (85)‐C92, Gd2 C2 @ D 3 (85)‐C92, La2 C2 @ D 3 (85)‐C92, and Sm2 @ D 3 (85)‐C92 ) that utilize the chiral D 3 (85)‐C92 cage. Abstract : Fullerenes : A method has been developed for isolating a pure sample of Er2 C94 from the myriad of fullerenes and endohedral fullerenes that are formed in the electric arc process. Crystallographic analysis of Er2 C94 in a cocrystal formed with Ni(OEP) reveals that the molecule is the carbide Er2 C2 @ D 3 (85)‐C92 .