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Li L, Zhao ZX, Zhang HX. Multireference ab initio study on the low-lying excited states of isoselenocyanic acid, HNCSe. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2014. [DOI: 10.1142/s0219633614500175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The electronic spectra of HNCSe were studied by performing multireference ab initio calculations at CASPT2 level of theory taking into account spin-orbit (SO) coupling. Our highly accurate calculation indicated that theoretically determined geometric parameters and harmonic vibrational frequencies for the ground state X 1 A ′ are consistent with observed experimental data. We present the oscillator strengths, electronic and structural changes accompanying the excitation process. The bonding characteristics in the low-lying excited states were analyzed on the basis of the valence molecular orbitals (MOs). And the excited states of HNCSe exist in the complex of Se and HNC radical pair. According to our calculations, the ground-state of HNCSe + is linear, and the value of the ionization potential of HNCSe has been found. The existence of bound excited anion states has been found for the first time in HNCSe -.
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Affiliation(s)
- Ling Li
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Zeng-Xia Zhao
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Hong-Xing Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China
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Meng XM, Zhu MZ, Guo QX. A novel highly selective fluorescent chemosensor for Hg(II) in fully aqueous media. CHINESE CHEM LETT 2007. [DOI: 10.1016/j.cclet.2007.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Meng XM, Liu L, Hu HY, Zhu MZ, Wang MX, Shi J, Guo QX. Highly sensitive and selective fluorescent chemosensors for Hg(II) in an aqueous environment based on carbamodithioate. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.127] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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