Raman and infrared reflection spectral studies of solutions of zinc oxide in potassium hydroxide (7.5 and 15m) with OH/ZnO ratios of from 8 to 16 show that the predominant species in these solutions possesses tetrahedral symmetry (Point Group Td) and is presumably the Zn(OH)42− ion. The frequencies and assignments, neglecting the hydrogen atoms, are: ν1(a1)=484 cm−1, ν2(e)=285 cm−1, ν3(f2)=430 cm−1, ν4(f2)=322 cm−1.
Infrared-absorption spectra derived from reflectivity measurements over the range 4000 to 200 cm−1 have been obtained for KF:LiF melts containing Nb (V). The results show two strong bands at 315 and 555 cm−1 and a very sharp medium band at 250 cm−1 superimposed on the former. Comparison of these spectra with well-characterized solid compounds such as K2NbF7 demonstrate that the NbF7−2 complex ion is the predominant species in these melts.
The NbOF63— anion is shown to be the predominant species in melts containing hydrolyzed Nb (V).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.