2015, Junghans, Katrin, Schlesier, Christin, Kostanyan, Aram, Samoylova, Nataliya A., Deng, Qingming, Rosenkranz, Marco, Schiemenz, Sandra, Westerström, Rasmus, Greber, Thomas, Büchner, Bernd, Greber, Thomas, Popov, Alexey A.

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.