The helium hydride ion, hydridohelium (1+) ion, or helonium is a cation (positively charged ion) with chemical formula HeH +. It consists of a helium atom bonded to a hydrogen atom, with one electron removed. It can also be viewed as protonated helium.

May 20, 2019 · Helium hydride is actually a molecular cation, HeH +. In 1925, chemists Thorfin R. Hogness and E. G. Lunn at the University of California, Berkeley, bombarded a hydrogen–helium mixture at low pressure and observed the presence of HeH + and possibly HeH 2+.

Apr 18, 2019 · In this metal-free and low-density environment, neutral helium atoms formed the Universe’s first molecular bond in the helium hydride ion HeH+ through radiative association with protons. As recombination progressed, the destruction of HeH+ created a path to the formation of molecular hydrogen.

Apr 18, 2019 · Astronomers have finally found the very first molecule to ever form in the universe. The helium hydride ion (HeH+) has long been a key theoretical part of how the chemistry of the cosmos...

Apr 17, 2019 · The unambiguous discovery of the helium hydride ion HeH+ in the planetary nebula NGC 7027 brings to a close an epic hunt to locate the elusive molecule in outer space, and cements theoretical predictions of the chemistry that essentially makes the Universe as we know it possible.

Apr 17, 2019 · In a new study published today (April 17) in the journal Nature, astronomers report on their use of an airborne telescope to detect HeH+ smoldering in the cloud of gas around a dying star some...

Oct 6, 2014 · According to Wikipedia, $\ce {HeH+}$ and fluoroantimonic acid are the strongest. According to a News article in Nature, Carborane acid is the strongest, but Wikipedia says fluoroantimonic acid is stronger.

Jun 5, 2019 · The helium hydride ion, HeH+, has been detected in space for the first time with the use of the GREAT spectrometer on SOFIA. Through observations of its fundamental rotational transition at 2.010 THz (149.1 micron), HeH+ was detected …

Apr 17, 2019 · HeH+ was the first molecule that formed when, 13 billion years ago, falling temperatures in the young Universe allowed recombination of the light elements produced in the Big Bang. At that time, ionized hydrogen and neutral helium atoms reacted to form HeH+.

Jan 28, 2020 · The HeH + cation is the simplest molecular prototype of the indirect dissociative recombination (DR) process that proceeds through electron capture into Rydberg states of the corresponding neutral molecule. This Letter develops the first application of our recently developed energy-dependent frame transformation theory to the indirect DR processes.