The helium dimer is a van der Waals molecule with formula He2 consisting of two helium atoms. This chemical is the largest diatomic molecule—a molecule...
35 KB (4,056 words) - 07:20, 11 June 2025
helium dimer. The three-atom combination of helium-4 atoms is an Efimov state. Helium-3 is predicted to form a trimer, although ground state dimers containing...
5 KB (533 words) - 18:06, 25 May 2025
Lithium helide (redirect from Lithium helium dimer)
The preparation of LiHe opens up the possibility to prepare other helium dimers, and beyond that multi-atom clusters that could be used to investigate...
4 KB (498 words) - 02:47, 14 October 2024
species that would not traditionally be considered molecules, such as the helium dimer, He2, which has one vibrational bound state and is so loosely bound that...
33 KB (3,704 words) - 13:13, 27 January 2025
Onishi, Taku (19 May 2015). "A Molecular Orbital Analysis on Helium Dimer and Helium-Containing Materials". Journal of the Chinese Chemical Society...
92 KB (11,148 words) - 04:27, 4 April 2025
The simplest example of three-electron bonding can be found in the helium dimer cation, He+ 2. It is considered a "half bond" because it consists of...
29 KB (3,858 words) - 22:23, 10 June 2025
quantum dimer system was originally proposed by Matsubara and Matsuda as a mapping of the lattice Bose gas to the quantum antiferromagnet. Quantum dimer magnets...
5 KB (589 words) - 08:28, 18 August 2023
than 3.0 kcal/mol. Held together entirely by the van der Waals force, helium dimer, He2, has the lowest measured bond dissociation energy of only 0.022 kcal/mol...
24 KB (2,442 words) - 16:09, 24 May 2025
Noble gas (redirect from Helium family (p6))
referred to as aerogens) are the members of group 18 of the periodic table: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn) and, in...
95 KB (9,705 words) - 16:10, 30 May 2025
molecular beam and has binding energy of approximately 0.001 J/mol. (The helium dimer is a van der Waals molecule.) Besides, the strength of a bond can also...
28 KB (3,710 words) - 11:02, 31 May 2025
Dirubidium (redirect from Rubidium dimer)
and at 677 °C the dimer has 7.4% of the vapour pressure (13.8% by mass). The rubidium dimer has been formed on the surface of helium nanodroplets when...
18 KB (1,330 words) - 09:29, 3 January 2024
mixture of linear monomer and cyclic dimer, trimer, and tetramer forms. The monomer is dimethyldioxirane. The dimer is known as diacetone diperoxide (DADP)...
38 KB (3,783 words) - 14:18, 23 May 2025
converting electrical energy to a laser light output. The first gas laser, the Helium–neon laser (HeNe), was co-invented by Iranian engineer and scientist Ali...
8 KB (875 words) - 04:18, 12 May 2024
Diargon (redirect from Argon dimer)
Diargon or the argon dimer is a molecule containing two argon atoms. Normally, this is only very weakly bound together by van der Waals forces (a van...
15 KB (1,706 words) - 17:55, 10 April 2025
first ionization potential of 21.564 eV, which is only exceeded by that of helium (24.587 eV), requiring too much energy to make stable ionic compounds. Neon's...
34 KB (4,155 words) - 07:22, 25 May 2025
helium and beryllium, but not between helium and neon. This similarly affects the noble gases' boiling points and solubilities in water, where helium...
252 KB (27,179 words) - 14:30, 25 May 2025
groups interchange readily intramolecularly. At higher temperatures, the dimer cracks into monomeric AlEt3. Triethylaluminium can be formed via several...
12 KB (1,021 words) - 03:03, 8 June 2025
Noble gas compound (section Neon and helium compounds)
one side, and the very unreactive argon (15.8 eV), neon (21.6 eV), and helium (24.6 eV) on the other. Consistent with this classification, Kr, Xe, and...
31 KB (3,550 words) - 22:32, 12 April 2025
α or α2+. Because they are identical to helium nuclei, they are also called He2+ or 4 2He2+ indicating helium with a +2 charge (missing its two electrons)...
60 KB (6,594 words) - 09:28, 29 May 2025
dinitrogen and water: HO+ 2 + H2O → O2 + H3O+ The protonated molecular oxygen dimer HO+ 4 has a lower energy than that of protonated molecular oxygen. "HO2+"...
6 KB (623 words) - 13:27, 13 December 2024
Disulfur dioxide (redirect from SO dimer)
Disulfur dioxide, dimeric sulfur monoxide or SO dimer is an oxide of sulfur with the formula S2O2. The solid is unstable with a lifetime of a few seconds...
14 KB (1,255 words) - 15:48, 21 December 2024
Fullerene chemistry (section Fullerene dimers)
Gonzalez, R.; Wudl, F. (1995). "Isolation of the Heterofullerene C59N as Its Dimer (C59N)2" (PDF). Science. 269 (5230): 1554–1556. Bibcode:1995Sci...269.1554H...
41 KB (4,408 words) - 16:52, 24 May 2025
(2009). "Observation of an Efimov-like trimer resonance in ultracold atom–dimer scattering". Nature Physics. 5 (3): 227. arXiv:0807.3306. Bibcode:2009NatPh...
12 KB (1,464 words) - 09:30, 22 January 2025
the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Carbon's abundance, its unique diversity of organic compounds...
111 KB (12,275 words) - 01:41, 11 June 2025
the laser gain was improved by adding helium to the lasing medium. The first excimer laser used a xenon dimer (Xe2) energized by a beam of electrons...
128 KB (12,568 words) - 12:36, 10 June 2025
of a vocal sample to where it sounded as though the singer had inhaled helium. Several producers at the time copied the style, creating other offshoots...
62 KB (5,802 words) - 20:11, 9 June 2025
sample. Other interference regions may include mass 80 (due to the argon dimer) and mass 56 (due to ArO), the latter of which greatly hinders Fe detection...
47 KB (6,585 words) - 03:39, 16 January 2025
Structure of acetamide hydrogen-bonded dimer from X-ray crystallography. Selected distances: C-O: 1.243, C-N, 1.325, N---O, 2.925 Å. Color code: red =...
12 KB (858 words) - 23:18, 3 February 2025
from a chemical reaction of a dimer with a monomer, with the implication that the value of the stability constant of the dimer must be "known", having been...
41 KB (2,770 words) - 15:47, 19 January 2025
(F2), and chlorine (Cl2), and the liquid bromine (Br2). The noble gases (helium, neon, argon, krypton, xenon, and radon) are also gases at STP, but they...
21 KB (2,555 words) - 18:00, 21 May 2025