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Sanov A. Intermolecular interactions in cluster anions. INT REV PHYS CHEM 2021. [DOI: 10.1080/0144235x.2021.1983292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Andrei Sanov
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ, USA
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Liang P, Mancini L, Marchione D, Vanuzzo G, Ferlin F, Recio P, Tan Y, Pannacci G, Vaccaro L, Rosi M, Casavecchia P, Balucani N. Combined crossed molecular beams and computational study on the N( 2D) + HCCCN(X 1Σ +) reaction and implications for extra-terrestrial environments. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1948126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Pengxiao Liang
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Luca Mancini
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Demian Marchione
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Gianmarco Vanuzzo
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Francesco Ferlin
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Pedro Recio
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Yuxin Tan
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
- ERASMUS+ Visiting Ph.D. student from Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Giacomo Pannacci
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Luigi Vaccaro
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Marzio Rosi
- Dipartimento di Ingegneria Civile e Ambientale, Università degli Studi di Perugia, Perugia, Italy
| | - Piergiorgio Casavecchia
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | - Nadia Balucani
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
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Dixon AR, Khuseynov D, Sanov A. Heterogeneously Substituted Radicals and Carbenes: Photoelectron Imaging of the FC(H)CN – and FCCN – Anions. J Phys Chem A 2014; 118:8533-41. [DOI: 10.1021/jp5024229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew R. Dixon
- Department
of Chemistry and
Biochemistry, The University of Arizona, Tucson, Arizona 85721, United States
| | - Dmitry Khuseynov
- Department
of Chemistry and
Biochemistry, The University of Arizona, Tucson, Arizona 85721, United States
| | - Andrei Sanov
- Department
of Chemistry and
Biochemistry, The University of Arizona, Tucson, Arizona 85721, United States
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Culberson LM, Wallace AA, Blackstone CC, Khuseynov D, Sanov A. Spectroscopy of the breaking bond: the diradical intermediate of the ring opening in oxazole. Phys Chem Chem Phys 2014; 16:3964-72. [DOI: 10.1039/c3cp54779e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Khuseynov D, Dixon AR, Goebbert DJ, Sanov A. Heterogeneous Substitution Effects in Chlorocyanomethyl Radical and Chlorocyanocarbene. J Phys Chem A 2013; 117:10681-91. [DOI: 10.1021/jp4053117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dmitry Khuseynov
- Department
of Chemistry and
Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Andrew R. Dixon
- Department
of Chemistry and
Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Daniel J. Goebbert
- Department
of Chemistry and
Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Andrei Sanov
- Department
of Chemistry and
Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
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Sanov A, Grumbling ER, Goebbert DJ, Culberson LM. Photodetachment anisotropy for mixed s-p states: 8/3 and other fractions. J Chem Phys 2013; 138:054311. [PMID: 23406123 DOI: 10.1063/1.4789811] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An approximate model for analytical prediction of photoelectron angular distributions in anion photodetachment from mixed s-p states is presented. Considering the dipole-allowed s, p, and d free-electron partial waves, the model describes photodetachment anisotropy in terms of the fractional p character of the initial orbital and the A and B coefficients describing the relative intensities of the p → d to p → s and s → p to p → s channels, respectively. The model represents an extension of the central-potential model to an intermediate regime encompassing varying degrees of s and p contributions to the initial bound orbital. This description is applicable to a broad class of hybrid molecular orbitals, particularly those localized predominantly on a single atom. Under the additional assumption of hydrogenic or Slater-type orbitals, the B/A ratio in photodetachment from a mixed 2s-2p state is shown to equal 8/3. Corresponding fractions are derived for other ns-np mixing cases. The predictions of the model are tested on several anion systems, including NH(2)(-) and CCl(2)(-). The quantitative discrepancies in the latter case are attributed to the breakdown of the central-atom approximation and a mechanism for corresponding corrections is indicated.
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Affiliation(s)
- Andrei Sanov
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona 85721, USA.
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Bundhun A, Abdallah HH, Ramasami P, Gaspar PP, Schaefer HF. Dicyanogermylenes: a tale of isomers and interconversions. Inorg Chem 2012; 51:12152-64. [PMID: 23134561 DOI: 10.1021/ic301225w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A systematic investigation is carried out using the B3LYP, BLYP, and BHLYP functionals and MP2 level of theory to characterize the low-lying electronic singlet and triplet GeC2N2 isomers. The basis sets used are of double-ζ plus polarization quality with additional s- and p-type diffuse functions, DZP++. Three bent isomers Ge(CN)2, CNGeCN, and Ge(NC)2 are located on the singlet and triplet potential energy surfaces. In visualizing the reaction pathways for the singlet isomerization of the bent isomers, two three-membered [Ge, C, N] cyclic systems, with exocyclic -C-C≡N and -C-N≡C bonding, appear on the energy surface. Four types of electron affinities reported are: the adiabatic electron affinity, the zero-point vibrationally corrected electron affinity, the vertical electron affinity, and the vertical detachment energy of the anion. The ionization energies and singlet-triplet gaps for all isomers are also reported. The energetic ordering (kcal mol(-1)) (B3LYP) with zero-point vibrational energy corrections for the singlet ground state isomers follows: Ge(CN)2 (global minimum) < CNGeCN (2.3) < Ge(NC)2 (3.3) < Cyc_exo_CCN (15.3) < Cyc_exo_CNC (30.6). All the bent and cyclic isomers are found to be below the dissociation limit to Ge ((3)P) + C2N2 ((1)Σg). The rate constants for all interconversions are evaluated using transition state theory.
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Affiliation(s)
- Ashwini Bundhun
- Computational Chemistry Group, Department of Chemistry, University of Mauritius , Réduit, Mauritius
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Vogelhuber KM, Wren SW, Shaffer CJ, McMahon RJ, McCoy AB, Lineberger WC. Photoelectron spectroscopy of HC4N−. J Chem Phys 2011; 135:204307. [DOI: 10.1063/1.3663617] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Grumbling ER, Sanov A. Photoelectron angular distributions in negative-ion photodetachment from mixed sp states. J Chem Phys 2011; 135:164302. [PMID: 22047234 DOI: 10.1063/1.3653234] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We describe an approach for constructing analytical models for the energy-dependence of photoelectron angular distributions in the one-electron, non-relativistic approximation. We construct such a model for electron emission from an orbital described as a superposition of s- and p-type functions, using linearly polarized light. In the limits of pure s or pure p electron photodetachment or photoionization, the model correctly reproduces the familiar Cooper-Zare formula. The model predictions are compared to experimental results for strongly solvated H(-) and NH(2)(-), corresponding to predominantly s and predominantly p character parent states, respectively.
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Affiliation(s)
- Emily R Grumbling
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, USA
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