Nitrogen compounds: nitrogen trichloride
The nitrogen in nitrogen trichloride formally is in the oxidation state 3.
- Formula as often written: NCl3
- Hill system formula: Cl3N1
- CAS registry number: [10025-85-1]
- Formula weight: 120.365
- Class: chloride
- nitrogen trichloride
- nitrogen(III) chloride
- nitrogen chloride
- Colour: yellow
- Appearance: liquid, danger!: explosive
- Melting point: -40°C
- Boiling point: 71°C
- Density: 1650 kg m-3
Element percentages for the elements in nitrogen trichloride
(NH4)2SO4 + 3Cl2 → NCl3 + 3HCl + NH4SO4
Nitrogen(III) trichloride (explosive!) may be made, with care, in the laboratory by the reaction between ammonium sulphate and chlorine gas. The product is extractable into an organic layer such as carbon tetrachloride before filtering and drying the orgasnic fraction. It is unwise to concentrate the product further than about 20% because of the risk of explosion.
Solid state structure
- Geometry of nitrogen:
- Prototypical structure:
What follows is the calculated isotope pattern for the NCl3 unit with the most intense ion set to 100%.
119 100.0 __________________________________________________
121 95.9 ________________________________________________
123 30.7 _______________
125 3.3 __
The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.
- R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
- N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
- F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
- A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
- R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
- A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
- A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
- J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
- D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
- J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
- J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.