Beryllium nitrate

Beryllium nitrate
Names
	Systematic IUPAC name Beryllium nitrate
	Other names Beryllium dinitrate
Identifiers
CAS Number	13597-99-4 ; 7787-55-5 (trihydrate) ;
3D model (JSmol)	Interactive image;
ChemSpider	24337 ;
ECHA InfoCard	100.033.678
EC Number	237-062-5;
PubChem CID	26126;
UNII	3VT1AXZ5LO ; 1C20531KRZ (trihydrate) ;
UN number	2464
CompTox Dashboard (EPA)	DTXSID6065555 ;
	InChI InChI=1S/Be.2NO3/c;22-1(3)4/q+2;2-1 Key: RFVVBBUVWAIIBT-UHFFFAOYSA-N ;
	SMILES [Be+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O;
Properties
Chemical formula	Be(NO3)2
Molar mass	133.021982 g/mol
Appearance	white 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)
Solubility in water	166 g/100 mL
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	-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)
REL (Recommended)	Ca C 0.0005 mg/m3 (as Be)
IDLH (Immediate danger)	Ca [4 mg/m3 (as Be)]
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). verify (what is ?) Infobox references

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 well known. "When added to water, brown fumes are evolved; when hydrolyzed in sodium hydroxide solution, both nitrate and nitrite ions are produced."^[2]

Synthesis and reactions edit

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 edit

^ ^a ^b ^c NIOSH Pocket Guide to Chemical Hazards. "#0054". National Institute for Occupational Safety and Health (NIOSH).
^ 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.
^ 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.
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 122. ISBN 978-0-08-037941-8.

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[PGCH-1] 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.

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