Subject pseudohalide

The molecular geometry of the anions has been subject of extensive spectroscopic and computational studies. The results have been reviewed.203-205,213 Table 7 lists the data obtained for the ions in the solid. All pseudohalides appeared to be essentially linear. 

The adsorbed ions so far studied using in-situ infrared spectroscopy can be divided into two classes the pseudohalides and the oxyanions (sulfates and phosphate species). Other ions, such as chloride, have been the subject of investigations using in-situ far-infrared spectroscopy, but the results are not conclusive. 

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