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.
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Hydrogen selenide |
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Hydrogen selenide |
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Other names[hide]
Hydroselenic
acid |
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Identifiers |
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518 |
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2202 |
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C01528 |
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X1050000 |
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Jmol-3D images |
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· [SeH2] |
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· InChI=1S/H2Se/h1H2
InChI=1/H2Se/h1H2 |
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Properties |
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H2Se |
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80.98 g/mol |
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Appearance |
Colorless gas |
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3.553 g/cm3 |
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-65.73 °C, 207 K, -86 °F |
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-41.25 °C, 232 K, -42 °F |
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Solubility in water |
0.70 g/100 mL |
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Acidity (pKa) |
3.89 |
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Structure |
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Bent |
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Hazards |
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EU Index |
034-002-00-8 |
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Highly
Flammable (F+) |
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flammable gas |
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Related compounds |
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Other anions |
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Other cations |
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Related compounds |
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USES :
Semiconductor materials, and manufacturing the organic compounds of the
metal selenium compounds and selenium.
Report :
