Shasha Zhao, Pei Zhao, Wenting Cai, Lipiao Bao, Muqing Chen, Yunpeng Xie, Xiang Zhao, and Xing Lu*: Stabilization of Giant Fullerenes C2(41)-C90, D3(85)-C92, C1(132)-C94, C2(157)-C96, and C1(175)-C98 by Encapsulation of a Large La2C2 Cluster: The Importance of Cluster–Cage Matching J. Am. Chem. Soc.2017, 139, 13, 4724–4728