User:Hmorris89/Sandbox

Hmorris89/Sandbox
Names
	IUPAC names tetraborane(10); arachno-B4H10
Identifiers
CAS Number	18283-93-7 ;
ChemSpider	21865171 ;
UNII	56X8JUK4Q7 ;
	InChI InChI=1S/B4H10/c5-1-3(5)2(7-3)4(1,3,6-1)8-2/h3-4H,1-2H2 Key: WEYOKDYZYYMRSQ-UHFFFAOYSA-N; InChI=1/B4H10/c5-1-3(5)2(7-3)4(1,3,6-1)8-2/h3-4H,1-2H2 Key: WEYOKDYZYYMRSQ-UHFFFAOYAQ;
Properties
Chemical formula	B4H10
Molar mass	53.32 g/mol
Appearance	colourless gas
Density	2.3 kg m-3 (gas)
Melting point	−120.8 °C
Boiling point	18 °C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tracking categories (test):

SizeSet

Tetraborane, or to be more precise tetraborane(10) or arachno-B₄H₁₀ was the first boron hydride compound to be classified by Stock and Messenez in 1912 and was first isolated by Alfred Hock. It has a relatively low boiling point at 18°C and is liquid at room temperature. Tetraborane gas is foul smelling and toxic.

Safety

Because it is easily oxidized it must be kept under vacuum. Tetraborane ignites when it comes in contact with air, oxygen, and nitric acid. Boranes in general including tetraborane have been deemed very toxic and are biologically destructive. A study consisting of small daily exposure of the chemical to rabbits and rats resulted in fatality^[2]

Preparation

Tetraborane can be produced via a reaction between acid and magnesium, aluminum, or beryillium borides. Hydrolysis of magnesium boride, hydrogenation of of boron halide (at high temperatures) and the pyrolysis of diborane also produce tetraborane. The hydrolysis of magnesium boride was one of the first reactions to give a high yeild(14%) of tetraborane. Phosphoric acid proved to be the most effecient acid (other than hydrochloric and sulfuric acid)in the reaction with magnesium boride. Reduction of boron halides with hydrogen in the presence of metal hydride at high temperatures also produces tetraborane^[3]

References

^ Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed.). Boca Raton, FL: CRC Press. p. B-84. ISBN 0-8493-0462-8..
^ http://voh.chem.ucla.edu/vohtar/spring05/classes/172/pdf/p21-30Borane.pdf
^ Dain, C. J., Downs, A. J., Laurenson, G. S., & Rankin, D. W. (1981). The Molecular Structure of Tetraborane(10) in the Gas Phase as determined by a Joint Analysis of Electron-diffraction and Microwave Data. Journal of the Chemical Society, 472-477.

http://pubs.acs.org/doi/pdf/10.1021/ic049558o3 http://voh.chem.ucla.edu/vohtar/spring05/classes/172/pdf/p21-30Borane.pdf

External links

Category:Boranes

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[1] Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed.). Boca Raton, FL: CRC Press. p. B-84. ISBN 0-8493-0462-8..

[2] ttp://voh.chem.ucla.edu/vohtar/spring05/classes/172/pdf/p21-30Borane.pdf

[3] Dain, C. J., Downs, A. J., Laurenson, G. S., & Rankin, D. W. (1981). The Molecular Structure of Tetraborane(10) in the Gas Phase as determined by a Joint Analysis of Electron-diffraction and Microwave Data. Journal of the Chemical Society, 472-477.

[2]

[3]