Beryllium nitrate

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Beryllium nitrate
Names
Systematic IUPAC name
Beryllium nitrate
Other names
Beryllium dinitrate
Identifiers
3D model (JSmol)
ChemSpider
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EC Number
  • 237-062-5
PubChem CID
UNII
UN number 2464
  • InChI=1S/Be.2NO3/c;2*2-1(3)4/q+2;2*-1 Yes check.svgY
    Key: RFVVBBUVWAIIBT-UHFFFAOYSA-N Yes check.svgY
  • [Be+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
Properties
Be(NO3)2
Molar mass 133.021982 g/mol
Appearancewhite solid
Odor odorless
Density 1.56 g/cm3
Melting point 60.5 °C (140.9 °F; 333.6 K)
Boiling point 142 °C (288 °F; 415 K) (decomposes)
166 g/100 mL
Thermochemistry
−700.4 kJ/mol
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 0.002 mg/m3
C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be) [1]
REL (Recommended)
Ca C 0.0005 mg/m3 (as Be) [1]
IDLH (Immediate danger)
Ca [4 mg/m3 (as Be)] [1]
Related compounds
Other cations
Magnesium nitrate
Calcium nitrate
Strontium nitrate
Barium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Beryllium nitrate is an inorganic compound with the idealized chemical formula Be(NO3)2. The formula suggests a salt, but, as for many beryllium compounds, the compound is highly covalent. Little of its chemistry is known. It produces brown fumes in water, and produces nitrate and nitrite ions when hydrolyzed in sodium hydroxide solution. [2]

Structure of basic berylliium nitrate. Color scheme: red = O, blue = N, turquoise = Be. Be4O(NO3)6 ICD Code59272.png
Structure of basic berylliium nitrate. Color scheme: red = O, blue = N, turquoise = Be.

Synthesis and reactions

The straw-colored adduct Be(NO3)2(N2O4) forms upon treatment of beryllium chloride with dinitrogen tetroxide:

BeCl2 + 3 N2O4 → Be(NO3)2(N2O4) + 2 NOCl

Upon heating, this adduct loses N2O4 and produces colorless Be(NO3)2. Further heating of Be(NO3)2 induces conversion to basic beryllium nitrate, which adopts a structure akin to that for basic beryllium acetate. [4]

Unlike the basic acetate, with its six lipophilic methyl groups, the basic nitrate is insoluble in most solvents.

References

  1. 1 2 3 NIOSH Pocket Guide to Chemical Hazards. "#0054". National Institute for Occupational Safety and Health (NIOSH).
  2. ↑ Addison, C.C.; Logan, N. (1964). Anhydrous Metal Nitrates. Advances in Inorganic Chemistry and Radiochemistry. Vol. 6. pp. 71–142. doi:10.1016/S0065-2792(08)60225-3. ISBN   9780120236060.
  3. ↑ Haley, M. J.; Wallwork, S. C.; Duffin, B.; Logan, N.; Addison, C. C. (1997). "Hexa-μ-nitrato-μ4-oxo-tetraberyllium". Acta Crystallographica Section C Crystal Structure Communications. 53 (7): 829–830. doi:10.1107/S010827019700303X.
  4. ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 122. ISBN   978-0-08-037941-8.