Calculate the expected wavenumber for a N-D stretch given that N-H stretches are normally observed at 3400 cm^-1. Show detailed steps. From Inorganic Chemistry.
8.26 Some formally Fe(IV) compounds, such as CaFeO3, are believed to contain the iron as a mixture of Fe(III) and Fe(V). Predict the key features of the ^57Fe Mössbauer spectra of this compound when described as (a) CaFe(IV)O3 and (b) CaFe(III)0.5Fe(V)0.5O3, assuming iron is in a regular octahedral coordination to oxygen in both descriptions. Could Mössbauer spectroscopy be used to distinguish these two descriptions? CaFeO3 orders antiferromagnetically at low temperatures and the Mössbauer spectrum at 4K consists of two overlying, magnetic hyperfine six-line patterns. Which is the best description of the iron oxidation states in CaFeO3 at this temperature?