Knowledge Bank

“The infrared and Raman spectra for the various Salts of hypophosphorus acid were collected and examined for the probable values for the wave numbers, relative intensities and depolarizations factors for the hypophosphite ion. The data are as follows: ($\Delta \sigma$ or and $2357cm-1$ (10) p. Also a normal coordinate treatment on the basis of the most probable model $C2v$ was conducted for this ion. The normal coordinate treatment gave the above listed wave numbers as fundamentals and lent support to the assignment of $Tsuboi1$ of $2357cm-1$ as the symmetric P-H Stretching motion ($A1$ type) and $2311cm-1$ as the antisymmetric P-H stretching motion ($B1$ type). Moreover the F matrix elements obtained for this ion were determined in such a manner that those potential constants for the $PH2$ in $PH3$ had nearly the same values as possible in $H2PO2-$ and those for PO had nearly the same values as possible in $H2PO2-$. In addition a report of the experimental work in progress on $D2PO2$- will be given.”