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Viana RB, Savedra RM, da Silva AB. A mechanistic view of the reaction between phosphine and fluorine atom: insights into PH3F isomers. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Viana RB, Machado ACP, Marques LDS, Modolo MZ, Santos DDO. Unravelling the diarsenic hydrides: Reactivity and spectroscopic properties. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Mehnen B, Linguerri R, Ben Yaghlane S, Mogren Al Mogren M, Elmarghany A, Hochlaf M. Spectroscopy of the electronic excited states of thioxophosphane, HPS, and of its deuterated species. J Chem Phys 2018; 149:164303. [DOI: 10.1063/1.5048463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- B. Mehnen
- Université de Tunis El Manar, Faculté des Sciences de Tunis, LR01ES09 Spectroscopie Atomique et Moléculaire et Applications, 1060 Tunis, Tunisia
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - R. Linguerri
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - S. Ben Yaghlane
- Université de Tunis El Manar, Faculté des Sciences de Tunis, LR01ES09 Spectroscopie Atomique et Moléculaire et Applications, 1060 Tunis, Tunisia
| | - M. Mogren Al Mogren
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - A. Elmarghany
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
- Faculty of Science, Suez University, Suez, Egypt
| | - M. Hochlaf
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
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Affiliation(s)
- Rommel B. Viana
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, Brazil
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Viana RB, Varela Jr JJG, Tello ACM, Savedra RML, da Silva ABF. The 1,2-hydrogen shift reaction for monohalogenophosphanes PH2X and HPX (X = F, Cl). Mol Phys 2016. [DOI: 10.1080/00268976.2016.1213438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Rommel B. Viana
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos, Universidade de São Paulo (USP), São Carlos-SP, Brazil
| | - Jaldyr J. G. Varela Jr
- Laboratório de Química Quântica Computacional, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão (UFMA), São Luís-MA, Brazil
| | - Ana C. M. Tello
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos, Universidade de São Paulo (USP), São Carlos-SP, Brazil
| | - Ranylson M. L. Savedra
- Departamento de Química, Laboratório de Modelagem Molecular, Universidade de Lavras (UFLA), Lavras-MG, Brazil
| | - Albérico B. F. da Silva
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos, Universidade de São Paulo (USP), São Carlos-SP, Brazil
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Viana RB. Tailoring the electronic properties among oxoarsine, arsinoyl and arsine oxide isomers: the simplest molecular systems with an arsenic–oxygen bond. RSC Adv 2016. [DOI: 10.1039/c6ra09517h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The main goal of this investigation is to understand the reaction pathways and the electronic and spectroscopy properties of AsOHn radicals (n = 0–3), which are some of the simplest compound models with an arsenic–oxygen bond.
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Affiliation(s)
- Rommel B. Viana
- Departamento de Química e Física Molecular
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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Viana RB, da Silva AB. Interaction between PH3 and small water clusters: Understanding the electronic and spectroscopic properties. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.02.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Viana RB, da Silva AB. Electronic properties of the AsCO, AsSiO and AsGeO radicals: Linear or cyclic? Polyhedron 2015. [DOI: 10.1016/j.poly.2015.01.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Viana RB, da Silva ABF. The CH3PH2 and CH3PH isomers: isomerization, hydrogen release, thermodynamic, and spectroscopy properties. J Mol Model 2014; 20:2372. [PMID: 25037491 DOI: 10.1007/s00894-014-2372-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 06/29/2014] [Indexed: 10/25/2022]
Abstract
In this study was performed a quantum chemical investigation of the methylphosphine molecule and its radical, which may show potential implications in interstellar processes, and may be crucial atmospheric tracer gasses in the atmosphere of Giant planets. The analyses were performed with the density functional theory and coupled cluster methods. The anharmonic vibrational modes were predicted for all the isomers. The atomic charge distribution was analyzed with different methodologies and some methods fail to establish the correct sign for phosphorous atom charges. The CH2PH2/CH3PH and CHPH3/CH3PH energy gap is 16.45-17.43 and 67.05-69.02 kcal mol(-1), respectively. The CH2PH3/CH3PH2 energy difference ranges from 44.62 to 50.05 kcal mol(-1). The ionization energy predicted with the W1BD method for CH3PH and CH3PH2 are 8.73 and 9.01 eV, respectively. The heat of formation at 298 K for each molecule were calculated in kcal mol(-1): CH3PH (24.16-25.27), CH2PH2 (41.20-42.47), CHPH3 (92.50-94.23), CH3PH2 (-4.73-2.83) and CH2PH3 (40.03-42.55). The rotational energy barriers for CH3PH2 and CH2PH3 are 1.65 and 2.81 kcal mol(-1), respectively. The CHPH3→CH2PH2 unimolecular arrangement presents a barrier energy of 29.89 kcal mol(-1), whereas CH3PH→CH2PH2 is accessible overcoming a barrier of 42.42 kcal mol(-1). The H2-release routes for CH2PH2 from carbon and phosphorous atoms show a barrier of 98.19 and 46.67 kcal mol(-1), respectively. For the CH3PH2→CH2PH3 isomerization, an energy barrier of 94.00 kcal mol(-1) was predicted, while for the H2-release pathway for CH3PH2 it is necessary to pass a potential energy barrier of 97.56 kcal mol(-1).
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Affiliation(s)
- Rommel B Viana
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos, Universidade de São Paulo, USP, São Carlos, SP, Brasil,
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Viana RB, Guimarães AR, de Souza AR, da Silva ABF. Molecular properties of the PCO radical: heat of formation and the isomerization pathways. J Mol Model 2014; 20:2074. [PMID: 24504453 DOI: 10.1007/s00894-014-2074-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 11/12/2013] [Indexed: 11/29/2022]
Abstract
The potential energy surface of [P,C,O] system in the ground state was investigated by quantum chemical methods. Four different isomers were characterized at the B3LYP/aug-cc-pVTZ: COP (i1), cPCO (i2), PCO (i3), and CPO (i4). The linear species i3 is the global minimum in the ground state surface, while i4 is a bent structure, and i2 is a cyclic isomer. In view to evaluate the bond nature of each isomer, a QTAIM and a NBO analyses were applied. The triangular species presents a ring critical point which confirms its cyclic structure instead of a T-shape one. The stability increases in the following order: i3 > i2 > i1 > i4. The energy gap between i3 and i2 ranges from 49.20 to 51.15 kcal mol(-1). The reaction barrier energies that converge into the direction of i3 showed values around 10 kcal mol(-1), while the reverse barriers are considerably large (62.85 kcal mol(-1)). The i3 heat of formation at 298 K ranges from 11.83 to 19.41 kcal mol(-1).
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Affiliation(s)
- Rommel B Viana
- Instituto de Química de São Carlos, Universidade de São Paulo, USP, São Carlos, SP, Brasil,
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Grimminger R, Clouthier DJ, Tarroni R, Wang Z, Sears TJ. An experimental and theoretical study of the electronic spectrum of HPS, a second row HNO analog. J Chem Phys 2013; 139:174306. [DOI: 10.1063/1.4827099] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Yaghlane SB, Cotton CE, Francisco JS, Linguerri R, Hochlaf M. Ab initio structural and spectroscopic study of HPSx and HSPx (x = 0,+1,−1) in the gas phase. J Chem Phys 2013; 139:174313. [DOI: 10.1063/1.4827520] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lamarra M, Tarroni R. Ab initiostructures and quartic force fields of phosphine oxide and phosphine sulphide. Mol Phys 2011. [DOI: 10.1080/00268976.2011.601281] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Halfen DT, Clouthier DJ, Ziurys LM, Lattanzi V, McCarthy MC, Thaddeus P, Thorwirth S. The pure rotational spectrum of HPS (X̃1A′): Chemical bonding in second-row elements. J Chem Phys 2011; 134:134302. [PMID: 21476750 DOI: 10.1063/1.3562374] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D T Halfen
- Department of Chemistry, Arizona Radio Observatory, and Steward Observatory University of Arizona, Tucson, Arizona 85721, USA
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Pereira PSS, Macedo LGM, Pimentel AS. New Insight into the Formation of Nitrogen Sulfide: A Quantum Chemical Study. J Phys Chem A 2009; 114:509-15. [DOI: 10.1021/jp907384d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Priscila S. S. Pereira
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rua Marquês de São Vicente 225, Gávea, 22453-900 Rio de Janeiro, RJ Brazil, and Departamento de Biotecnologia, Prédio do ICB, Universidade Federal do Pará, Rua Augusto Correa 1, 66075-110 Belém, PA, Brazil
| | - Luiz G. M. Macedo
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rua Marquês de São Vicente 225, Gávea, 22453-900 Rio de Janeiro, RJ Brazil, and Departamento de Biotecnologia, Prédio do ICB, Universidade Federal do Pará, Rua Augusto Correa 1, 66075-110 Belém, PA, Brazil
| | - André S. Pimentel
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rua Marquês de São Vicente 225, Gávea, 22453-900 Rio de Janeiro, RJ Brazil, and Departamento de Biotecnologia, Prédio do ICB, Universidade Federal do Pará, Rua Augusto Correa 1, 66075-110 Belém, PA, Brazil
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Tarroni R, Clouthier DJ. Heavy atom nitroxyl radicals. I: An ab initio study of the ground and lower electronic excited states of the H2As=O free radical. J Chem Phys 2009; 131:114310. [DOI: 10.1063/1.3230132] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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