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Bouchet LM, Pierini AB, Brunetti V, Argüello JE. Electrochemical and computational study of the initiation step in the photoinduced electron transfer reaction between sulphur and selenide nucleophiles toward 1-bromonaphthalene. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lydia M. Bouchet
- INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas; Universidad Nacional de Córdoba, Ciudad Universitaria; 5000 Córdoba Argentina
| | - Adriana B. Pierini
- INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas; Universidad Nacional de Córdoba, Ciudad Universitaria; 5000 Córdoba Argentina
| | - Verónica Brunetti
- INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas; Universidad Nacional de Córdoba, Ciudad Universitaria; 5000 Córdoba Argentina
| | - Juan E. Argüello
- INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas; Universidad Nacional de Córdoba, Ciudad Universitaria; 5000 Córdoba Argentina
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2
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Brea O, Mó O, Yáñez M. Ga(+) Basicity and Affinity Scales Based on High-Level Ab Initio Calculations. Chemphyschem 2015; 16:3206-13. [PMID: 26269224 DOI: 10.1002/cphc.201500574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Indexed: 11/12/2022]
Abstract
The structure, relative stability and bonding of complexes formed by the interaction between Ga(+) and a large set of compounds, including hydrocarbons, aromatic systems, and oxygen-, nitrogen-, fluorine and sulfur-containing Lewis bases have been investigated through the use of the high-level composite ab initio Gaussian-4 theory. This allowed us to establish rather accurate Ga(+) cation affinity (GaCA) and Ga(+) cation basicity (GaCB) scales. The bonding analysis of the complexes under scrutiny shows that, even though one of the main ingredients of the Ga(+) -base interaction is electrostatic, it exhibits a non-negligible covalent character triggered by the presence of the low-lying empty 4p orbital of Ga(+) , which favors a charge donation from occupied orbitals of the base to the metal ion. This partial covalent character, also observed in AlCA scales, is behind the dissimilarities observed when GaCA are compared with Li(+) cation affinities, where these covalent contributions are practically nonexistent. Quite unexpectedly, there are some dissimilarities between several Ga(+) -complexes and the corresponding Al(+) -analogues, mainly affecting the relative stability of π-complexes involving aromatic compounds.
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Affiliation(s)
- Oriana Brea
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049, Madrid, Spain), Fax
| | - Otilia Mó
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049, Madrid, Spain), Fax
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049, Madrid, Spain), Fax.
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Martín-Sómer A, Mó O, Yáñez M, Guillemin JC. Acidity enhancement of unsaturated bases of group 15 by association with borane and beryllium dihydride. Unexpected boron and beryllium Brønsted acids. Dalton Trans 2015; 44:1193-202. [DOI: 10.1039/c4dt02292k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BeH2and BH3association with unsaturated bases of group 15 increases their acidity and changes the trend. Ethynyl : BeH2complexes unexpectedly behave as Be acids.
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Affiliation(s)
- Ana Martín-Sómer
- Departamento de Química
- Facultad de Ciencias
- Módulo 13
- Universidad Autónoma de Madrid
- 28049 Madrid
| | - Otilia Mó
- Departamento de Química
- Facultad de Ciencias
- Módulo 13
- Universidad Autónoma de Madrid
- 28049 Madrid
| | - Manuel Yáñez
- Departamento de Química
- Facultad de Ciencias
- Módulo 13
- Universidad Autónoma de Madrid
- 28049 Madrid
| | - Jean-Claude Guillemin
- Institut des Sciences Chimiques de Rennes
- École Nationale Supérieure de Chimie de Rennes
- CNRS
- UMR 6226
- 35708 Rennes Cedex 7
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Murai T, Nishi D, Hayashi S, Nakanishi W. Aromatic Selenoic, Selenothioic, and Diselenoic Acid Salts: Isolation, Characterization, and 77Se NMR Spectra, Together with Theoretical Elucidation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University
- JST, ACT-C
| | - Daisuke Nishi
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University
| | - Satoko Hayashi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University
| | - Waro Nakanishi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University
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Montero-Campillo MM, Yáñez M, Lamsabhi AM, Mó O. Spontaneous H2Loss through the Interaction of Squaric Acid Derivatives and BeH2. Chemistry 2014; 20:5309-16. [DOI: 10.1002/chem.201304259] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Indexed: 12/20/2022]
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Hurtado M, Lamsabhi AM, Mó O, Yáñez M, Guillemin JC. On the Origin of the Enhanced Acidity of Chalcocyclopentadienes (Cyclopentadiene Chalcogenols) in the Gas Phase. Chemphyschem 2012; 13:1167-72. [DOI: 10.1002/cphc.201101021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Indexed: 11/08/2022]
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7
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Trujillo C, Mó O, Yáñez M, Silvi B. On the Bonding of Selenocyanates and Isoselenocyanates and Their Protonated Derivatives. J Chem Theory Comput 2008; 4:1593-9. [DOI: 10.1021/ct800178x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cristina Trujillo
- Departamento de Química, C-9. Universidad Autónoma de Madrid. Cantoblanco. 28049-Madrid. Spain, and Laboratoire de Chimie Théorique, UMR-CNRS-7616, Université de Paris 06, F-94000 Ivry, France
| | - Otilia Mó
- Departamento de Química, C-9. Universidad Autónoma de Madrid. Cantoblanco. 28049-Madrid. Spain, and Laboratoire de Chimie Théorique, UMR-CNRS-7616, Université de Paris 06, F-94000 Ivry, France
| | - Manuel Yáñez
- Departamento de Química, C-9. Universidad Autónoma de Madrid. Cantoblanco. 28049-Madrid. Spain, and Laboratoire de Chimie Théorique, UMR-CNRS-7616, Université de Paris 06, F-94000 Ivry, France
| | - Bernard Silvi
- Departamento de Química, C-9. Universidad Autónoma de Madrid. Cantoblanco. 28049-Madrid. Spain, and Laboratoire de Chimie Théorique, UMR-CNRS-7616, Université de Paris 06, F-94000 Ivry, France
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8
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Trujillo C, Mó O, Yáñez M. Why Are Selenouracils as Basic as but Stronger Acids than Uracil in the Gas Phase? Chemphyschem 2008; 9:1715-20. [DOI: 10.1002/cphc.200800215] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kaur D, Sharma P, Kaur RP, Kaur M, Bharatam P. Substituent effects on the proton affinities of selenoamides: A theoretical study. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2006.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Koné M, Illien B, Laurence C, Gal JF, Maria PC. Are nicotinoids protonated on the pyridine or the amino nitrogen in the gas phase? J PHYS ORG CHEM 2006. [DOI: 10.1002/poc.1006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Koketsu M, Kanoh M, Ishihara H. Reactions of 2-Pentynyl trimethylsilylethynyl selenides with primary amines viaallenyl selenoketene. J Heterocycl Chem 2005. [DOI: 10.1002/jhet.5570420219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Koketsu M, Kanoh M, Yamamura Y, Ishihara H. Synthesis of 1-alkylselenocyclobutene via intermediate allenyl selenoketene. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Li P, Bu Y, Ai H, Cao Z. Acid−Base Behavior Study of Glycinamide Using Density Functional Theory. J Phys Chem A 2004. [DOI: 10.1021/jp037567x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ping Li
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, Department of Chemistry, Qufu Normal University, Qufu 273165, P. R. China, and Chemistry Group, Heze Medical College, Heze 274030, P. R. China
| | - Yuxiang Bu
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, Department of Chemistry, Qufu Normal University, Qufu 273165, P. R. China, and Chemistry Group, Heze Medical College, Heze 274030, P. R. China
| | - Hongqi Ai
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, Department of Chemistry, Qufu Normal University, Qufu 273165, P. R. China, and Chemistry Group, Heze Medical College, Heze 274030, P. R. China
| | - Zhaohua Cao
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, Department of Chemistry, Qufu Normal University, Qufu 273165, P. R. China, and Chemistry Group, Heze Medical College, Heze 274030, P. R. China
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Sanz P, Mó O, Yáñez M. Characterization of intramolecular hydrogen bonds and competitive chalcogen–chalcogen interactions on the basis of the topology of the charge density. Phys Chem Chem Phys 2003. [DOI: 10.1039/b304699k] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sanz P, Yáñez M, Mó O. Competition between X···H···Y Intramolecular Hydrogen Bonds and X····Y (X = O, S, and Y = Se, Te) Chalcogen−Chalcogen Interactions. J Phys Chem A 2002. [DOI: 10.1021/jp0143645] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Murai T, Hayakawa S, Kato S. Ammonium eneselenolates: stereochemistry and electronic properties. J Org Chem 2001; 66:8101-5. [PMID: 11722211 DOI: 10.1021/jo015899x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ammonium eneselenolates were generated with high efficiency by reacting selenothioic acid S-esters with a THF solution of TBAF. The methylation of ammonium eneselenolates gave ketene selenothioacetals as stereoisomeric mixtures. The ratio of the two stereoisomers depended on the duration of the reaction before the addition of MeI. Ammonium eneselenolates were characterized by examining their (1)H, (13)C, and (77)Se NMR spectra, which indicated that ammonium eneselenolates were present almost exclusively as Z-isomers. These results suggested that ammonium eneselenolates are kinetically generated as stereoisomeric mixtures, and isomerization of E-isomers to Z-isomers then takes place to result in the exclusive formation of Z-isomers. During the methylation of Z-isomers of ammonium eneselenolates, the isomerization of Z-isomers to E-isomers occurs to give stereoisomeric mixtures of ketene selenothioacetals. NMR spectra of ammonium eneselenolates implied that the electrons at the selenium atom are somewhat delocalized to the carbon-carbon double bond and the carbon-selenium bond shows partial double-bond character.
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Affiliation(s)
- T Murai
- Department of Chemistry, Faculty of Engineering, Gifu University,Yanagido Gifu 501-1193 Japan.
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Alcamí M, Mó O, Yáñez M. Computational chemistry: a useful (sometimes mandatory) tool in mass spectrometry studies. MASS SPECTROMETRY REVIEWS 2001; 20:195-245. [PMID: 11835306 DOI: 10.1002/mas.10005] [Citation(s) in RCA: 109] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In this review, we present a brief summary of the theoretical methods most frequently used in gas-phase ion chemistry. In subsequent sections, the performance of these methods is analyzed, paying attention to the reliability of geometries, vibrational frequencies, energies, and entropies. The possible pathologies of the different methods, in the form of instabilities of the wave function or spin contamination problems, are discussed. Several examples are presented to illustrate the usefulness of ab initio or density functional theory (DFT) methods to predict the existence of elusive molecules and/or to characterize non-conventional structures, and to rationalize the charge redistributions normally associated with ion-molecule interactions and which result in bond-weakening or bond-reinforcement effects. Finally, the role of non-classical structures in ion-molecule interactions is also illustrated with different examples.
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Affiliation(s)
- M Alcamí
- Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain
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Density functional studies on the mechanisms of unimolecular reactions of HXCSe (X=H, F, Cl, and Br). Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00286-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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