This work was supported by DoE-BES, Division of Chemical Sciences, Geosciences and Biosciences under Award DE-SC0007347 the National Natural Science Foundation of China (no. 51602092), the Science and Technology Innovation Project Foundation of Hunan Province (no. 2018RS3103), the Hunan Provincial Natural Science Foundation of China (no. 2017JJ3006), the Construct Program for Key Disciplines in Hunan Province and the Science and the Technology Plan Project of Hunan Province (no. 2016TP1020), the Science and Technology Development Plan Project in Hengyang City, (nos. 2017KJ159, 2018KJ121), and Open fund project of Hunan Provincial Key Laboratory of Intelligent Information Processing and Application for Hengyang Normal University (IIPA19K03). We acknowledge use of computational resources at the TIGRESS high-performance computer center at Princeton University. We are grateful to Prof. Hiroshi Onishi for insightful discussions and to Dr. Lara Ferrighi for her help in performing some of the CRYSTAL calculations