The Sb₃F₁₆ species was found to be capable of ionizing the CO₂ molecule.

The acidic strength of selected Brønsted/Lewis superacids is evaluated on the basis of theoretical calculations carried out at the QCISD/6-311++G(d,p) level. The energies and Gibbs free energies of deprotonation processes for nHF/AlF₃ and nHF/GeF₄ (n = 1–6) are found to depend on the number (n) of hydrogen fluoride molecules (playing a Brønsted acid role) surrounding the AlF₃ and GeF₄ Lewis acids. The successive attachment of HF molecules to either AlF₃ or GeF₄ gradually increases the acidity strength of the resulting superacid, which leads to the saturation achieved for 5–6 HF molecules interacting with either one of these Lewis acids. The importance of the microsolvation of the corresponding anionic species as well as the necessity of considering larger (more structurally complex) building blocks of superacids while predicting their acidity is indicated and discussed.