Nitrogen tribromide

Nitrogen trichloride forms only if the molar ratio of ammonium chloride to chlorine is equal to or greater than 2 3. Even a ratio of 16 3 is reported to give the same product. On the other hand, lower amoimts of ammonium chloride result in formation of a solution of chlorine in ammonium chloride instead of the NCI3. 

According to Rai [16], nitrogen trichloride can also be prepared by reaction of bleaching powder (calcium hypochlorite) solution on a saturated solution of ammonium chloride. The reaction is very vigorous and must be carried out at low temperatures. Ice bath cooling is recommended and the reaction temperature should not exceed 0 °C. The reaction does not require special equipment or extraction of the product and is therefore suitable for small-scale preparation or class demonstration of the explosive properties of nitrogen trichloride [16]. 

Nitrogen trichloride is also formed by passing a mixture of nitrosyl chloride and phosphorus pentachloride through a tube heated to a high temperature. The nitrosyl chloride is prepared by heating a mixture of sodium nitrite and phosphoms pentachloride [31]  

There is very little information about nitrogen tribromide (NBrs) in open literatiue and to make the situation even more difficult these literature soiuces tend to contradict each other. 

Nitrogen tribromide (NBrs) is reported as a red, oily, volatile liquid with offensive odor [6, 8]. From later work it appears, however, that nitrogen tribromide is a solid substance of a deep red color with nitrogen to bromine ratio 1 3 [40]. This extremely temperature-sensitive substance explodes even at —100 °C in Nujol-pentane suspension (1 2.7) with the slightest mechanical disturbance [40]. 

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Bromine Nitride (Nitrogen bromide or Nitrogen tribromide). NBr3 (probably), mw 253.74,... 

Write formulas for each of the following compounds (a) nitrogen monoxide, (b) nitrogen tribromide, and (c) nitrogen triiodide. 

See Nitrogen tribromide hexaammoniate Initiators Nitrogen trichloride Alone, or Non-metals... 

Nitrogen tribromide, 4 319 Nitrogen trifluoride, 22 830 production of, 22 845 Nitroglycerin[e] (NG), 9 47, 48 10 730 molecular formula and structure, 5 110t pharmacokinetics, 5 115 processes, 27 164 production of, 27 174 Nitro group, 27 157-158 Nitroguanidine, 20 734 Nitrol, molecular formula and structure, 5 1 lOt... 

Iodine isocyanate, 0524 Nitrogen chloride difhroride, 3978 Nitrogen tribromide hexaammoniate, 0290 Nitrogen trichloride, 4724... 

Tribromamine hexaammoniate, see Nitrogen tribromide hexaammoniate, 0289 Tribromomethane, see Bromoform, 0367 Tribromonitromethane, 0313 f Tribromosilane, 0286 Tributylbismuth, 3565 m/xo-Tributylborane, 3563 Tri-2-butylborane, 3564 Tributylgallium, 3566 Tributylindium, 3567 Tributyl phosphate, 3568 f Tributylphosphine, 3569... 

Iodine isocyanate, 0521 Nitrogen chloride difluoride, 3972 Nitrogen tribromide hexaammoniate, 0289 Nitrogen trichloride, 4137... 

Nitrogen tribromide, trichloride and triiodide these are all highly sensitive and violently explosive, and should never be prepared or used unless absolutely necessary. 

Nitrogen tribromide is more reactive than NCI3, and explodes at temperatures as low as 175 K. It can be prepared by reaction 14.57, attempts to make it by treating NCI3 with Br2 being unsuccessful. 

FOLLOW-UP PROBLEM 10.9 Show the bond dipoles and molecular dipole, if any, for (a) dichloromethane (CH2CI2) (b) iodine oxide pentafluoride (IOF5) (c) nitrogen tribromide (NBr3). 

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