CAS number : 7783-07-5
Molecular weight :80.98
Molecular formula/chemical symbol :H2Se
Description :
H2Se adopts a "bent" structure with a H-Se-H bond angle of 91°. Consistent with this structure, three IR-active vibrational bands are observed: 2358, 2345, and 1034 cm?1.
The properties of H2S and H2Se are similar, although the selenide is more acidic with pKa = 3.89, and the second pKa = 11.0 at 25 °C. Reflecting its acidity, H2Se is soluble in water.
Hydrogen selenide |
|
Hydrogen selenide |
|
Other names[hide]
Hydroselenic
acid |
|
Identifiers |
|
518 Y |
|
2202 |
|
C01528 Y |
|
X1050000 |
|
Jmol-3D images |
|
· [SeH2] |
|
· InChI=1S/H2Se/h1H2 Y
InChI=1/H2Se/h1H2 |
|
Properties |
|
H2Se |
|
80.98 g/mol |
|
Appearance |
Colorless gas |
3.553 g/cm3 |
|
-65.73 °C, 207 K, -86 °F |
|
-41.25 °C, 232 K, -42 °F |
|
Solubility in water |
0.70 g/100 mL |
Acidity (pKa) |
3.89 |
Structure |
|
Bent |
|
Hazards |
|
EU Index |
034-002-00-8 |
Highly
Flammable (F+) |
|
flammable gas |
|
Related compounds |
|
Other anions |
|
Other cations |
|
Related compounds |
|
Y (verify) (what is: Y/N?) |
USES :
Semiconductor materials, and manufacturing the organic compounds of the
metal selenium compounds and selenium.
Report :