The effect of pressure on the Raman spectra of solids. III. Sodium formate, NaHCOO

Publisher Website
Google Scholar
Abstract
The pressure dependence of the Raman bands of NaHCOO has been studied at 298 K and three different phases were identified up to pressures of 30 kbar. Phase II is the one stable at ambient conditions, and when heated to 500 K at ambient pressures it undergoes a transition to phase I. This transition has also been studied and the frequencies of the Raman‐active librations of NaHCOO I resemble those of aqueous solutions of formate ions. From the shifts in the librations which accompany the I–II transition it can be concluded that the Na+–HCOO−interactions are much weaker in phase I than phase II. The Raman spectrum of KHCOO II at ambient conditions is also reported and resemblances between this spectrum and that of NaHCOO III are discussed.

This publication has 23 references indexed in Scilit: