Ammonium selenide[1]
Other names
  • Dimmonium selenide
3D model (JSmol)
  • InChI=1S/2H3N.Se/h2*1H3;/q;;-2/p+2
  • [NH4+].[NH4+].[Se-2]
Molar mass 115.05 g/mol
Appearance White solid
Solubility Soluble in sodium hydroxide[2]
Related compounds
Other anions
Ammonium sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Ammonium selenide is a chemical compound with the symbol (NH4)2Se. It is claimed to be a white solid and there is little to no spectroscopic evidence on this compound.[1][2]


It was first claimed to be prepared in 1898 by reacting concentrated ammonia and hydrogen selenide gas.[1] However, this has been disproved in 1926 as it was shown that ammonium selenide was unstable in water. Instead, ammonium selenide was produced by the reaction of anhydrous ammonia and hydrogen selenide gas(made from the reaction of iron(II) selenide and hydrochloric acid). However, there is no X-ray crystallography on this compound.[2]


Ammonium selenide reacts with water and various acids. For example, it reacts with nitric acid to form selenic acid:[2]

(NH4)2Se + 4HNO3 + H2O → H2SeO4 + 3NH4NO3

It also reacts with various metals, such as calcium, to produce their respective selenides.[3]


  1. ^ a b c Victor Lenher; Edgar F. Smith (1898). "Ammonium Selenide". Journal of the American Chemical Society. ACS Publications. 20 (4): 277–278. doi:10.1021/ja02066a007. Retrieved 15 March 2021.
  2. ^ a b c d Erwin Wendehorst (1926). "Über das Ammoniumselenid". Zeitschrift für anorganische und allgemeine Chemie (in German). 153 (1): 263–268. doi:10.1002/zaac.19261530124.
  3. ^ T. Petze; J. Kohle (1977). "Über die Darstellung von CaSe, SrSe, BaSe und EuSe durch Reaktion der Metalle mit Selenwasserstoff in flüssigem Ammoniak". Zeitschrift für anorganische und allgemeine Chemie (in German). 437 (1): 193–196. doi:10.1002/zaac.19774370127.