Pentaborane(11)

Pentaborane(11)

Identifiers
CAS Number	18433-84-6
Properties
Chemical formula	B5H11
Molar mass	65.14 g·mol−1
Melting point	−123 °C (−189 °F; 150 K)
Boiling point	63 °C (145 °F; 336 K)
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Pentaborane(11) is inorganic compound with the chemical formula B₅H₁₁. It is a colorless liquid at room temperature with a boiling point of 63 °C.

Synthesis

• Diborane conversion:

$\mathsf{5B_2H_6 \ \xrightarrow{115^oC}\ 2B_5H_{11} + 4H_2 }$

Properties

It is an unstable liquid. It reacts with ammonia. It is capable of producing a range of elements when heated, such as diborane, tetraborane, hydrogen. It inflames in air.