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- Title
Methane as a Selectivity Booster in the Arc-Discharge Synthesis of Endohedral Fullerenes: Selective Synthesis of the Single-Molecule Magnet Dy<sub>2</sub>TiC@C<sub>80</sub> and Its Congener Dy<sub>2</sub>TiC<sub>2</sub>@C<sub>80</sub>.
- Authors
Junghans, Katrin; Schlesier, Christin; Kostanyan, Aram; Samoylova, Nataliya A.; Deng, Qingming; Rosenkranz, Marco; Schiemenz, Sandra; Westerström, Rasmus; Greber, Thomas; Büchner, Bernd; Popov, Alexey A.
- Abstract
The use of methane as a reactive gas dramatically increases the selectivity of the arc-discharge synthesis of M-Ti-carbide clusterfullerenes (M=Y, Nd, Gd, Dy, Er, Lu). Optimization of the process parameters allows the synthesis of Dy2TiC@C80-I and its facile isolation in a single chromatographic step. A new type of cluster with an endohedral acetylide unit, M2TiC2@C80, is discovered along with the second isomer of M2TiC@C80. Dy2TiC@C80-(I,II) and Dy2TiC2@C80-I are shown to be single-molecule magnets (SMM), but the presence of the second carbon atom in the cluster Dy2TiC2@C80 leads to substantially poorer SMM properties.
- Subjects
METHANE; CHEMICAL synthesis; FULLERENES; GRAPHENE; ISOMERS
- Publication
Angewandte Chemie International Edition, 2015, Vol 54, Issue 45, p13411
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201505870