Potential energy surfaces for alkali plus noble gas pairs: a systematic comparison

Author(s):  
L. Aaron Blank ◽  
Gary S. Kedziora ◽  
David E. Weeks
2014 ◽  
Vol 141 (13) ◽  
pp. 134309 ◽  
Author(s):  
L. F. Roncaratti ◽  
L. A. Leal ◽  
F. Pirani ◽  
V. Aquilanti ◽  
G. M. e Silva ◽  
...  

2019 ◽  
Vol 21 (28) ◽  
pp. 15815-15822 ◽  
Author(s):  
Sara Gómez ◽  
Albeiro Restrepo

The potential energy surfaces for the interior rotation of a series of pairs of noble gas atoms encapsulated in the C70 cavity have been explored.


2019 ◽  
Author(s):  
Ishita Bhattacharjee ◽  
Debashree Ghosh ◽  
Ankan Paul

The question of quadruple bonding in C<sub>2</sub> has emerged as a hot button issue, with opinions sharply divided between the practitioners of Valence Bond (VB) and Molecular Orbital (MO) theory. Here, we have systematically studied the Potential Energy Curves (PECs) of low lying high spin sigma states of C<sub>2</sub>, N<sub>2</sub> and Be<sub>2</sub> and HC≡CH using several MO based techniques such as CASSCF, RASSCF and MRCI. The analyses of the PECs for the<sup> 2S+1</sup>Σ<sub>g/u</sub> (with 2S+1=1,3,5,7,9) states of C<sub>2</sub> and comparisons with those of relevant dimers and the respective wavefunctions were conducted. We contend that unlike in the case of N<sub>2</sub> and HC≡CH, the presence of a deep minimum in the <sup>7</sup>Σ state of C<sub>2</sub> and CN<sup>+</sup> suggest a latent quadruple bonding nature in these two dimers. Hence, we have struck a reconciliatory note between the MO and VB approaches. The evidence provided by us can be experimentally verified, thus providing the window so that the narrative can move beyond theoretical conjectures.


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