Pentaborane (9)

Boron compounds: pentaborane (9)

The boron in pentaborane (9) formally is in the oxidation state .

Pentaborane (9)

• Formula as often written: B₅H₉
• Hill system formula: B₅H₉
• CAS registry number: [19624-22-7]
• Formula weight: 63.126
• Class: hydride

Synonyms

• pentaborane (9)
• boron hydride
• pentaborane (9)
• pentaboron nonahydride

Physical properties

• Colour: colourless
• Appearance: liquid
• Melting point: -47°C
• Boiling point: 60°C
• Density: 600 kg m^-3 (liquid)

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Element analysis

Element percentages for the elements in pentaborane (9)

Element	%
B	85.63
H	14.37

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the B₅H₉ unit with the most intense ion set to 100%.

Formula: B₅H₉

mass  %
59   0.1 
60   1.5 _
61  12.4 ______
62  49.7 _________________________
63 100.0 __________________________________________________
64  80.6 ________________________________________
65   0.1 

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

• R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
• N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
• F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
• A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
• R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
• A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
• A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
• J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
• D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
• J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
• J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.

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Boron	Bore
Bor	Boor
Boro	Boro
Bor	Boro