Fig. U. Stereographic projection of the environment of atom Oi in sulfamic acid. 

 If this atom is in fact the nitrogen atom, possible positions for its two bonded hydro- 

 gen atoms are shown bv the solid line and attached filled circles. The orientation of 

 O 



/ 

 the — S — group relative to the — NH2 group is shown, as in Fig. 10, with dotted 



OH 



lines. 



^_-HN 



Fig. 12. Hydrogen bonding scheme for one sulfamic acid assuming atom Oi is the 

 nitrogen atom. The orientation of the molecule is the same as in Fig. 9. 



73 



