Infrared Studies of the Rarehyphen;Earth Sulfates (4000ndash;80 cmminus;1)

摘要

The hydrates and the anhydrous salts of the rarehyphen;earth sulfates were studied by infrared techniques from 4000ndash;80 cmminus;1. The environment of the sulfate group was followed as the hydrates were dehydrated. The change occurring in the symmetry of the sulfate group is discussed in terms of water effects and coordination to the metal. From deuteration studies, the various librational modes of coordinated water to rarehyphen;earth metals have been assigned for the first time.