74 



JERRY DONOHUE 



it appears, on the basis of the data presently available, that sulfamic acid may 

 well not be a zwitter ion in the crystals. 



In addition to these simple substances, a knowledge of hydrogen bonding is 

 of course important in discussion of the more complicated molecules, such as 



Fig. 13. Stereographic projection of the environment of atom O3 in sulfamic acid. 

 Remarks in the legend for Fig. 1 1 apply here also. 



/ 



/ 



/ 

 OH 



-----0 



H^. 



-0 



\, 



Fig. 14. Hydrogen bonding scheme for one sulfamic acid molecule assuming atom 

 O3 is the nitrogen atom. 



