Characterizing electronic states and spectra in transition metal-rare gas diatomic cations: The cases of VAr+ and VKr+

2021 ◽  
pp. 107959
Author(s):  
João Gabriel Farias Romeu ◽  
Gabriel Fernando de Melo ◽  
Fernando R. Ornellas
Keyword(s):  
Transition Metal ◽  
Electronic States ◽  
Rare Gas

Low‐lying electronic states of the rare gas oxides

1977 ◽  
Vol 66 (8) ◽  
pp. 3767-3777 ◽  
Author(s):  
Thom. H. Dunning ◽  
P. Jeffrey Hay
Keyword(s):  
Electronic States ◽  
Rare Gas

Chemisorption of Ordered Overlayer on a Tight-Binding Metal Surface Two-Level Adsorbate

1982 ◽  
Vol 37 (10) ◽  
pp. 1147-1164
Author(s):  
K. Masuda
Keyword(s):  
Phase Shift ◽  
Transition Metal ◽  
Density Of States ◽  
Tight Binding ◽  
Electronic States ◽  
Bridge Site ◽  
Bonding Interaction ◽  
Model Transition ◽  
Adsorbate Structure ◽  
Shift Technique

The chemisorption of a two-level (at E1 and E2) adsorbate on the (001) surface of a tightbinding metal is investigated using the Green's function formalism and the phase shift technique. The adorbital density of states (DOS)ϱa(E) as well as the change in the electronic DOS Δϱ(E; E1, E2) due to chemisorption are calculated for the ordered overlayers with c(2 x 2), p(2 x 1), p(2 X 2), p(4 X 1) and c(4 X 2) structures. It is assumed that the chemisorbed species sit over the twofold bridge site of the (001) surface of the model transition metal and have a π-bonding interaction with the two substrate atoms. It is shown that the electronic states of the overlayers are very sensitive to the adsorbate coverage (0), adsorbate structure and adsorbate species (one level or two level adsorbates). Furthermore, it is shown that there are marked differences in the Δϱ(E) curves between the chemisorption of two level adsorbates Δϱ(E; E1, E2) and that of single level adsorbates Δϱ(E; E1) + Δϱ(E; E2) (simulating the changes in the electronic DOS during the dissociation of diatomic molecules).

Weak-field ligands enable inert early transition metal oxides to convert methane to methanol: the case of ZrO

2020 ◽  
Vol 22 (12) ◽  
pp. 6606-6618 ◽  
Author(s):  
Benjamin A. Jackson ◽  
Evangelos Miliordos
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Electronic States ◽  
Weak Field ◽  
Radical Mechanism ◽  
Spin States ◽  
Excited Electronic States ◽  
Early Transition Metal ◽  
High Spin States

We perform multireference calculations on the ZrO + CH4 reaction for ground and excited electronic states. Weak-field ligands are shown to stabilize the high spin states of ZrO with oxyl character, which facilitate the reaction via a radical mechanism.

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