On the stability and chemical bond of noble gas halide cations NgX + (Ng = He – Rn; X = F – I)

2020 ◽  
Vol 42 (2) ◽  
pp. 124-129
Author(s):  
Lily Arrué ◽  
Ricardo Pino‐Rios
Keyword(s):  
Chemical Bond ◽  
Noble Gas ◽  
The Stability

scholarly journals Leading Interaction Components in the Structure and Reactivity of Noble Gases Compounds

Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2367
Author(s):  
Francesca Nunzi ◽  
Giacomo Pannacci ◽  
Francesco Tarantelli ◽  
Leonardo Belpassi ◽  
David Cappelletti ◽  
...  
Keyword(s):  
Chemical Bond ◽  
Theoretical Approach ◽  
Noble Gases ◽  
Halogen Bond ◽  
Noble Gas ◽  
Anomalous Behavior ◽  
Type Interaction ◽  
Long Life ◽  
Weak Chemical

The nature, strength, range and role of the bonds in adducts of noble gas atoms with both neutral and ionic partners have been investigated by exploiting a fine-tuned integrated phenomenological–theoretical approach. The identification of the leading interaction components in the noble gases adducts and their modeling allows the encompassing of the transitions from pure noncovalent to covalent bound aggregates and to rationalize the anomalous behavior (deviations from noncovalent type interaction) pointed out in peculiar cases. Selected adducts affected by a weak chemical bond, as those promoting the formation of the intermolecular halogen bond, are also properly rationalized. The behavior of noble gas atoms excited in their long-life metastable states, showing a strongly enhanced reactivity, has been also enclosed in the present investigation.

A thermodynamic approach to mechanical stability of nanosized particles

Open Physics ◽  
2003 ◽  
Vol 1 (2) ◽  
Author(s):  
Vladimir Samsonov ◽  
Nikolay Sdobnyakov
Keyword(s):  
Surface Tension ◽  
Free Energy ◽  
Stability Condition ◽  
Mechanical Stability ◽  
Noble Gas ◽  
Stability Limit ◽  
Gas Clusters ◽  
The Stability ◽  
The Second Variation ◽  
Nonpolar Organic

AbstractThermodynamic stability conditions for nanoparticles (resulting from non-negativity of the second variation of the free energy) have been analyzed for two cases: (i) a nonvolatile nanosized particle with the size-dependent surface tension; (ii) the limiting case of larger objects when the surface tension takes its macroscopic value. It has been shown that the mechanical stability of a nanoparticle, i.e. its stability relative to the volume fluctuations, is defined by an interplay between the excess (“surface”) free energy and the volumetric elastic energy. According to the results obtained, noble gas clusters and metal nanoparticles satisfy the mechanical stability condition. At the same time, water nanodrops, as well as nanoparticles presented by nonpolar organic molecules, correspond to the stability limit. Among the investigated systems, the stability condition is not carried out for n-Pentane clusters.

On the stability of noble gas bound 1-tris(pyrazolyl)borate beryllium and magnesium complexes

2015 ◽  
Vol 39 (9) ◽  
pp. 6778-6786 ◽  
Author(s):  
Sudip Pan ◽  
Ranajit Saha ◽  
Pratim K. Chattaraj
Keyword(s):  
Noble Gas ◽  
Magnesium Complexes ◽  
The Stability

1-Tris(pyrazolyl)borate beryllium and magnesium cationic complexes are found to bind Ar–Rn atoms quite effectively.

Learning the Stability and Activation of Chemical Bond of the Nitrogen Molecule from Ammonia Synthesis

Daxue Huaxue ◽  
2015 ◽  
Vol 30 (6) ◽  
pp. 33-44
Author(s):  
Yang Qi ◽  
◽  
◽  
Xie Gang ◽  
Chen Sanping ◽  
...  
Keyword(s):  
Chemical Bond ◽  
Ammonia Synthesis ◽  
Nitrogen Molecule ◽  
The Stability

scholarly journals Ion-Size Effects in the Growth Sequences of Metal-Ion-Doped Noble Gas Clusters

1997 ◽  
Vol 17 (2) ◽  
pp. 109-122 ◽  
Author(s):  
Christian Lüder ◽  
Dimitris Prekas ◽  
Michalis Velegrakis
Keyword(s):  
Metal Ion ◽  
Mass Spectra ◽  
Noble Gas ◽  
Magic Number ◽  
Sphere Packing ◽  
Cluster Ions ◽  
Magic Numbers ◽  
Gas Clusters ◽  
The Stability ◽  
Ion Size

We have studied the stability and the structure of doped noble gas cluster ions of the type M+Xn, (M=In, Al, Na, X=Ar, Kr, Xe) by systematically changing the composition M/X and observing changes in the magic number patterns appearing in the mass spectra. When the metal ion radius is comparable to the radius of the noble gas atom, the mass spectra show the familar icosahedral magic numbers n+ 1=13,19,23,26,29,32, 46, 55,... In constrast, for metal ions with radii significantly smaller than the noble gas atoms, we observe a new series of magic numbers n + 9, 11, 17, 21,24, 26,... This series converts into the icosahedral one for larger clusters. Using a simple hard sphere packing model, we show that this new series of magic numbers is consistent with a cluster growth sequence which is based on a capped square antiprism (CSA) geometrical structure of the clusters.

Anomaly in the stability of the hydroxides of icosagens (B and Al) and their noble gas (Xe and Rn) derivatives: a comparative study

2020 ◽  
Vol 22 (25) ◽  
pp. 14109-14124
Author(s):  
Ayan Ghosh ◽  
Atri Mallick ◽  
Tapan K. Ghanty
Keyword(s):  
Comparative Study ◽  
Ab Initio ◽  
Noble Gas ◽  
The Stability

Existence of noble gas-inserted hydroxide of icosagens, HNgBO and HNgOAl (Ng = Xe and Rn) molecules, has been predicted through ab initio calculations.

Enhancement of structure of interstellar diamond microcrystals by image processing

1988 ◽  
Vol 46 ◽  
pp. 836-837
Author(s):  
Michael A. O'Keefe ◽  
David Blake ◽  
Friedemann Freund ◽  
Crispin Hetherington ◽  
John Turner
Keyword(s):  
Noble Gas ◽  
Low Pressure ◽  
Stability Field ◽  
Carbonaceous Chondrites ◽  
Particle Collisions ◽  
Mechanism Of Formation ◽  
Isotopic Data ◽  
Diamond Crystals ◽  
Difference Of Opinion ◽  
The Stability

Since the discovery of 0.5-7.5 nm diamond crystals in oxidized acid residues of carbonaceous chondrites much speculation has centered on the mechanism of their origin. Indeed; there is even some difference of opinion regarding the presence of “amorphous low-atomic number phases” intimately associated with the diamond crystallites. While the diamond-containing residue from the meteorites comprises only 50-200 ppm of the total meteorite mass, theories regarding the genesis of the diamonds have far-reaching consequences since noble gas isotopic data indicate that they predate the solar system and are from an interstellar source. Lewis et al. propose that the diamonds formed under low pressure conditions by processes similar to those used in recent low-pressure CVD laboratory syntheses. Blake et al. propose a second mechanism of formation, within the stability field of diamond, due to particle-particle collisions behind supernova shock waves. At the present time, no data exist which unequivocally support one model over the other.

scholarly journals Breaking the disulfide chemical bond using high energy photons: the dimethyl disulfide and methyl propyl disulfide molecules

RSC Advances ◽  
2017 ◽  
Vol 7 (58) ◽  
pp. 36525-36532 ◽  
Author(s):  
L. R. Varas ◽  
L. H. Coutinho ◽  
R. B. Bernini ◽  
A. M. Betancourt ◽  
C. E. V. de Moura ◽  
...  
Keyword(s):  
Chemical Bond ◽  
Dimethyl Disulfide ◽  
High Energy ◽  
Ionic Fragmentation ◽  
The Stability ◽  
Methyl Propyl Disulfide

In order to study the stability of the disulfide chemical bond in molecules subjected to a flux of high energy photons, the ionic fragmentation of DMDS and MPDS has been studied following excitation around the S 1s edge (∼2470 eV).

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