Polymers and New Infrared Absorption Bands of Water

New absorption bands of water at 1.79 and 1.74{μ} are interpreted as combination bands arising from 510 cm^-1 (19.5{μ})+1640 (6.1{μ})+3450 (2.90{μ}) and 510+1640+3580 (2.79{μ}) respectively. The 19.5{μ} band, although somewhat hypothetical, is assumed to represent the vibration of one H₂O group against another, either in a simple polymer or in a definitely arranged lattice of H₂O groups. The well-known 4.7{μ} band, which has no parallel in the water vapor spectrum, probably is (510+1640) cm^-1. The spectrum of selenite, CaSO₄·{}2H₂O, has bands paralleling all of the liquid water bands in the shorter wave region, but all resolved into doublets.