1
|
Gronowski M, Kołos R. A DFT Study on the Excited Electronic States of Cyanopolyynes: Benchmarks and Applications. Molecules 2022; 27:molecules27185829. [PMID: 36144567 PMCID: PMC9500640 DOI: 10.3390/molecules27185829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Highly unsaturated chain molecules are interesting due to their potential application as nanowires and occurrence in interstellar space. Here, we focus on predicting the electronic spectra of polyynic nitriles HC2m+1N (m = 0–13) and dinitriles NC2n+2N (n = 0–14). The results of time-dependent density functional theory (TD-DFT) calculations are compared with the available gas-phase and noble gas matrix experimental data. We assessed the performance of fifteen functionals and five basis sets for reproducing (i) vibrationless electronic excitation energies and (ii) vibrational frequencies in the singlet excited states. We found that the basis sets of at least triple-ζ quality were necessary to describe the long molecules with alternate single and triple bonds. Vibrational frequency scaling factors are similar for the ground and excited states. The benchmarked spectroscopic parameters were shown to be acceptably reproduced with adequately chosen functionals, in particular ωB97X, CAM-B3LYP, B3LYP, B971, and B972. Select functionals were applied to study the electronic excitation of molecules up to HC27N and C30N2. It is demonstrated that optical excitation leads to a shift from the polyyne- to a cumulene-like electronic structure.
Collapse
|
2
|
Kopelke S, Gokhberg K, Averbukh V, Tarantelli F, Cederbaum LS. Ab initio interatomic decay widths of excited states by applying Stieltjes imaging to Lanczos pseudospectra. J Chem Phys 2011; 134:094107. [PMID: 21384950 DOI: 10.1063/1.3558739] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- S Kopelke
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany.
| | | | | | | | | |
Collapse
|
3
|
Minaev B, Tunell I, Salek P, Loboda O, Vahtras O, Ågren * H. Singlet–triplet transitions in three-atomic molecules studied by time-dependent MCSCF and density functional theory. Mol Phys 2004. [DOI: 10.1080/00268970410001668435] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
4
|
Morley GP, Lambert IR, Ashfold MNR, Rosser KN, Western CM. Dissociation dynamics of HCN(DCN) following photoexcitation at 121.6 nm. J Chem Phys 1992. [DOI: 10.1063/1.463002] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
5
|
Perić M, Dohmann H, Peyerimhoff SD, Buenker RJ. Potential surfaces for valence-type singlet electronic states of the HCN molecule. ACTA ACUST UNITED AC 1987. [DOI: 10.1007/bf01436576] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
6
|
Rianda R, Frueholz RP, Kuppermann A. Singlet→triplet transitions in C≡N containing molecules by electron impact. J Chem Phys 1984. [DOI: 10.1063/1.447284] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
7
|
Nagata T, Kondow T, Kuchitsu K. Polarization CN(B2Σ+-X2Σ+) emission produced in the electron-impact dissociation of HCN and DCN. Chem Phys 1982. [DOI: 10.1016/0301-0104(82)85124-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
8
|
Nagata T, Kondow T, Ozaki Y, Kuchitsu K. Absorption spectra of hydrogen cyanide and deuterium cyanide in the 130-80 nm range. Chem Phys 1981. [DOI: 10.1016/0301-0104(81)80019-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
9
|
Messing I, Filseth SV, Sadowski CM, Carrington T. Absolute rate constants for the reactions of CH with O and N atoms. J Chem Phys 1981. [DOI: 10.1063/1.441563] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
10
|
|
11
|
Baronavski A. The fluorescence spectrum of HCN (A≈1 A′' → X≈1 Σ+) using ArF laser excitation. Chem Phys Lett 1979. [DOI: 10.1016/0009-2614(79)87166-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Srivastava SK, Tanaka H, Chutjian A. Elastic scattering of intermediate energy electrons by HCN. J Chem Phys 1978. [DOI: 10.1063/1.436775] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
13
|
|