==Preparation and structure== The compound is prepared by treatment of ammonium salts, such as ammonium nitrate with chlorine. Intermediates in this conversion include chloramine and dichloramine, NH2Cl and NHCl2, respectively. Like ammonia, NCl3 is a pyramidal molecule. The N-Cl distances are 1.76 Å, and the Cl-N-Cl angles are 107°. Nitrogen tr... Found on http://en.wikipedia.org/wiki/Nitrogen_trichloride