The acid strength of the datively bound X→AlF₃ complexes (X=HF, HCl, H₂S, AsH₃, PH₃, NF₂H, NFH₂, NH₃, and H₂O) is evaluated on the basis of theoretical calculations employing ab initio methods. Significant enhancement of the X acidity upon the formation of X/AlF₃ compounds is predicted. It is demonstrated that even the non-acidic molecules X (e.g., H₂O, NH₃) combined with AlF₃ are expected to form the X→AlF₃ complexes characterized by the acid strength comparable or larger than that of H₂SO₄.

中文翻译：

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涉及AlF ₃孤对受体和各种孤对供体的双键结合配合物的酸强度

根据以下公式评估固定结合的X →AlF ₃配合物（X = HF，HCl，H ₂ S，AsH ₃，PH ₃，NF ₂ H，NFH ₂，NH ₃和H ₂ O）的酸强度。从头算方法进行理论计算。预计在形成X / AlF ₃化合物时X酸度会显着提高。结果表明，甚至与AlF ₃结合的非酸性分子X（例如H ₂ O，NH ₃）也会形成X →AlF ₃络合物，其酸强度与H ₂ SO ₄相当或更大。