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Title: Sc3CH@C80: selective 13C enrichment of the central carbon atom
Authors: Junghans, KatrinRosenkranz, MarcoPopov, Alexey A.
Publishers Version: https://doi.org/10.1039/c5cc10025a
Issue Date: 2016
Published in: Chemical Communications, Volume 52, Issue 39, Page 6561-6564
Publisher: Cambridge : Royal Society of Chemistry
Abstract: Sc3CH@C80 is synthesized and characterized by 1H, 13C, and 45Sc NMR. A large negative chemical shift of the proton, -11.73 ppm in the Ih and -8.79 ppm in the D5h C80 cage isomers, is found. 13C satellites in the 1H NMR spectrum enabled indirect determination of the 13C chemical shift for the central carbon at 173 ± 1 ppm. Intensity of the satellites allowed determination of the 13C content for the central carbon atom. This unique possibility is applied to analyze the cluster/cage 13C distribution in mechanistic studies employing either 13CH4 or 13C powder to enrich Sc3CH@C80 with 13C.
Keywords: carbon; carbon 13 protonscandium; Article; atom; carbon nuclear magnetic resonance; chemical structure; isomer; proton nuclear magnetic resonance
DDC: 540
License: CC BY-NC 3.0 Unported
Link to License: https://creativecommons.org/licenses/by-nc/3.0/
Appears in Collections:Chemie



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