Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5416352 | Journal of Molecular Structure: THEOCHEM | 2010 | 7 Pages |
Abstract
The diazomethyl (HCNN) radical has attracted considerable attention due to its great interest in interstellar chemistry and combustion processes. In this article, we have systemically studied the low-lying electronic states of the HCNN radical and its ions through complete active space self-consistent field and multiconfigurational second-order perturbation theory. For the ground state of HCNN, the calculated CH stretch ν1, asymmetric NNC stretch ν2, and NCH bend ν4 are 3305, 1876, and 870 cmâ1, respectively. The ν4 is close to the experimental value of 871 cmâ1. The adiabatic excitation energies of 12Aâ² and 22Aâ³ of HCNN are shown to be in agreement with the experimental reports. Moreover, the first adiabatic detachment energy of HCNNâ is 1.628 eV, which accords with the experimental value of 1.685 ± 0.006 eV. Our work might not only be helpful for deeply understanding the character of the low-lying electronic states of the HCNN radical and its ions, but also provide a theoretical guidance for further studying the photoelectron spectrum of HCNN and HCNNâ.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Yue-Jie Liu, Zeng-Xia Zhao, Fu-Quan Bai, Ming-Xing Song, Hong-Xing Zhang, Chia-Chung Sun,