B5H9 (pentaborane-9) is a boron hydride compound belonging to the class of electron-deficient cage molecules. This material is primarily of interest in aerospace and energetic applications research, where boron hydrides are investigated as high-energy-density fuels and propellant additives due to their exceptional hydrogen content and exothermic combustion characteristics. While not widely commercialized in conventional engineering, B5H9 represents an important compound within boron hydride chemistry for advanced propulsion systems and specialized chemical synthesis.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 821 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 5.505 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 2.863 | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.08021 | C/m² | — | ||
Seebeck Coefficient(S) | -236.9 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.00310 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.02945 | eV/atom | — |