Tetraborane

Later, analysis based on high-resolution X-ray data was performed to analyze the charge density.

[7] Hydrolysis of magnesium boride, hydrogenation of boron halides at high temperatures and the pyrolysis of diborane also produce tetraborane.

The bis(diboranyl) is expected to have a lower energy at the Hartree-Fock method (HF) level.

There is some evidence that the bis(diboranyl) isomer is initially produced when synthesizing tetraborane by the Wurtz reaction or coupling of B2H5I in the presence of sodium amalgam.

A study consisting of small daily exposure of the chemical to rabbits and rats resulted in fatality.

ball-and-stick model of tetraborane
ball-and-stick model of tetraborane
NFPA 704 four-colored diamond Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas Flammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propane Instability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxide Special hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid