Bond stretch isomerism in Be32−driven by the Renner–Teller effect

Homray, Manoswita ; Mondal, Sukanta ; Misra, Anirban ; Chattaraj, P. K. (2019) Bond stretch isomerism in Be32−driven by the Renner–Teller effect Physical Chemistry Chemical Physics, 21 (15). pp. 7996-8003. ISSN 1463-9076

Full text not available from this repository.

Official URL: http://doi.org/10.1039/C9CP00643E

Related URL: http://dx.doi.org/10.1039/C9CP00643E

Abstract

We investigate the underlying principle behind the occurrence of bond stretch isomerism in Be32−, which has not been revealed yet. Various computational studies of the different isomers are carried out at the complete active space self-consistent field (CASSCF) level of theory in addition to the B3LYP level in conjunction with the 6-311++G(d) basis set. The potential energy surfaces linking the different isomers through transition states and conical intersections are investigated at the CASSCF level, connecting various geometrical isomers of Be32−. The linear intermediate of the Be32− cluster is considered to be of profound importance since its excited state is found to be degenerate and undergoing the Renner–Teller effect, producing two triangular bond stretch isomers. Ab initio molecular dynamics simulations based on the Atom Centered Density Matrix Propagation (ADMP) method also further elucidate the phenomenon of isomerization via the linear intermediate. The variation of the global reactivity descriptors and free energy profile along the bond stretch isomerization path is also investigated. The estimated aromatic stabilization energy also corroborates the stability ordering of the bond stretch isomers.

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry
ID Code:133540
Deposited On:29 Dec 2022 05:44
Last Modified:29 Dec 2022 05:44

Repository Staff Only: item control page