Medical and Biochemical Application of Infrared Spectroscopy. V. Infrared Absorption Spectra of Organic Sulfate Esters. (1)

Abstract

Systematic studies were made on the infrared absorption spectra of organic sulfate esters. Based on the detailed examination of potassium methylsulfate, measurement of infrared spectra was made of 14 kinds of organic sulfates and the following facts were revealed : 1) The absorption of νas SO3 appears as two strong bands in the regions of 1260~1240 and 1220~1210 cm-1, and the absorption is stable. 2) The absorption of νsym SO3 appears at 1081~1040 cm-1, the absorption being very strong. 3) The absorption of δdeg SO3 appears as a broad and strong band at 590~550 cm-1 and is sometimes split into two. 4) The absorption of δsym SO3 is at 650~617 cm-1 and is somewhat weaker than that of δdeg SO3. This absorption shifts to a higher wave number within this range as the length of the chain increases. 5) The absorption of νS-O-C is also in the region of 838~757 cm-1 and the absorption shifts to a higher wave number as the chain becomes longer in aliphatic sulfates. © 1960, The Pharmaceutical Society of Japan. All rights reserved.