The neutral molecule can be formed in a low pressure gas discharge tube.
A neutral beam of H3 can be formed from a beam of H 3 ions … See more

The shape of the molecule is predicted to be an equilateral triangle. Vibrations can occur in the molecule in two ways, firstly the molecule can expand and contract retaining the equilateral triangle shape (breathing), or one atom can move relative to the others … See more

The related H 3 ion is the most prevalent molecular ion in interstellar space. It is believed to have played a crucial role in the cooling of early stars in the history of the Universe … See more

H3 can break up in the following ways:
H3 → H+3 + e H3 → H + H2 H3 → 3 H 2 H3 → 3 H2 See more

The molecule can only exist in an excited state. The different excited electronic states are represented by symbols for the outer electron nLΓ with n the principal quantum number, L … See more

Gerhard Herzberg was the first to find spectroscopic lines of neutral H3 when he was 75 years old in 1979. Later he announced that this … See more

Since the molecule is relatively simple, researchers have attempted to calculate the properties of the molecule ab-initio from quantum theory. The Hartree–Fock equations have … See more