PT - JOURNAL ARTICLE AU - Zhu, Zheng-Zhong AU - Chen, Zuo-Chang AU - Yao, Yang-Rong AU - Cui, Cun-Hao AU - Li, Shu-Hui AU - Zhao, Xin-Jing AU - Zhang, Qianyan AU - Tian, Han-Rui AU - Xu, Piao-Yang AU - Xie, Fang-Fang AU - Xie, Xiao-Ming AU - Tan, Yuan-Zhi AU - Deng, Shun-Liu AU - Quimby, Jennifer M. AU - Scott, Lawrence T. AU - Xie, Su-Yuan AU - Huang, Rong-Bin AU - Zheng, Lan-Sun TI - Rational synthesis of an atomically precise carboncone under mild conditions AID - 10.1126/sciadv.aaw0982 DP - 2019 Aug 01 TA - Science Advances PG - eaaw0982 VI - 5 IP - 8 4099 - http://advances.sciencemag.org/content/5/8/eaaw0982.short 4100 - http://advances.sciencemag.org/content/5/8/eaaw0982.full SO - Sci Adv2019 Aug 01; 5 AB - Carboncones, a special family of all-carbon allotropes, are predicted to have unique properties that distinguish them from fullerenes, carbon nanotubes, and graphenes. Owing to the absence of methods to synthesize atomically well-defined carboncones, however, experimental insight into the nature of pure carboncones has been inaccessible. Herein, we describe a facile synthesis of an atomically well-defined carboncone[1,2] (C70H20) and its soluble penta-mesityl derivative. Identified by x-ray crystallography, the carbon skeleton is a carboncone with the largest possible apex angle. Much of the structural strain is overcome in the final step of converting the bowl-shaped precursor into the rigid carboncone under mild reaction conditions. This work provides a research opportunity for investigations of atomically precise single-layered carboncones having even higher cone walls and/or smaller apex angles.