Determination of hydration numbers of acids in organic phase by IR spectrometry

Abstract

By the precision infrared spectrometry the hydration numbers n were determined for a series of acids in 0.64 M tributyl phosphate (CCl4) and acetonitrile at a concentration of free water 0.01–0.1 M. In tributyl phosphate n = 3.1±0.3 (HAuCl4); 2.9±0.3 (HFeCl4); 1.9±0.2 (HClO4); 1.0±0.2 (HNO3); 1.0±0.1 (HCl). In acetonitrile n = 3.1±0.7 (HAuCl4); 1.1±0.4 (HFeCl4); 2.1±0.2 (HClO4), 0±0.05 (HNO3); 0.1±0.15 (HCl).