VIII, A, 3 



Pratt and Gibbs: Two Phthaloximes 



183 



THE ABSORPTION SPECTRA OF PHTHALOXIME SALTS IN AQUEOUS 



PYRIDINE 



The absorption spectra of the ammonium, sodium, potassium, 

 and silver salts of the white oxime in pyridine solution contain- 

 ing 14 per cent water are plotted in fig. 5. The addition of water 

 is necessary to dissolve the alkali salts, as their solubility in pyri- 

 dine is slight. 



16 



Oscillation frequencies. 



18 2000 22 24 26 28 



3000 32 



5.0 



4.8 



4.6 



I A. 



S 4.2 



4.0 



I 3 





01 n 



a 3 



J3 



$2 



2.6 



2.4 





















































































1 

 \ 



\ 























\ 



\ 

 \ 





















\ 

 \ 





















\ 



\ 





















\ 

















'; 







\ 

 \ 

 \ 

















\ 





\ 

 \ 

 \ 

 \ 

















\ 





s 



\ 



• 



* 



/ 



r 



















/ 



\ 













\ 





/' 



























"• 







100,000 



10,000^ 



»,000> 



Fig. 4. Full curve = white phthaloxime in pyridine. 



Dash curve = white phthaloxime in 50 per cent pyridine and 50 per cent water. 

 Dot curve = Silver salt of white phthaloxime in pyridine. 



