A general formulation of the Gibbs free energy regarding six linear symmetric triatomic species Qun-Chao Ding, Jian-Quan Chen, Xiao-Long Peng, Chao-Wen Wang, Guan-Hong Liu, Rui Jiang, Hua Yuan and Chun-Sheng Jia Eur. Phys. J. Plus, 139 7 (2024) 660 Published online: 26 July 2024 DOI: 10.1140/epjp/s13360-024-05431-5