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Neptunium Nitride

Neptunium nitride - a binary inorganic compound of neptunium and nitrogen with the formula NpN, black crystals, does not dissolve in water.

Neptunium Nitride
Are common
Systematic
name
Neptunium Nitride
Traditional namesNitrogen Neptunium
Chem. formulaNpn
Physical properties
conditionblack crystals
Molar mass251.01 g / mol
Density14.18 g / cm³
Thermal properties
T. melt.2830 10 bar ° C

Content

Getting

  • The reaction of freshly obtained neptunium hydride and ammonia :
NpH3+NH3→750-775oCNpN+3H2{\ displaystyle {\ mathsf {NpH_ {3} + NH_ {3} \ {\ xrightarrow {750-775 ^ {o} C}} \ NpN + 3H_ {2}}}}  
  • Neptunium and nitrogen reaction:
2Np+N2→600oC2NpN{\ displaystyle {\ mathsf {2Np + N_ {2} \ {\ xrightarrow {600 ^ {o} C}} \ 2NpN}}}  

Physical Properties

Neptunium nitride forms black crystals of cubic syngony , space group F m3m , cell parameters a = 0.48987 nm, Z = 4.

Not soluble in water.

Chemical Properties

  • Decomposes on high heat:
2NpN→T2Np+N2{\ displaystyle {\ mathsf {2NpN \ {\ xrightarrow {T}} \ 2Np + N_ {2}}}}  

Literature

  • Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1992. - T. 3. - 639 p. - ISBN 5-82270-039-8 .
  • Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
  • Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
  • Inorganic Synthesis Guide: 6 Vol. / Ed. Brower G. - M .: Mir, 1985 .-- T. 4 .-- 447 p.

Links

  • Neptunium Compounds


Source - https://ru.wikipedia.org/w/index.php?title=Nepridium_Nitrid&oldid=80366893


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Clever Geek | 2019