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Mó O, Montero-Campillo MM, Yáñez M, Alkorta I, Elguero J. A Holistic View of the Interactions between Electron-Deficient Systems: Clustering of Beryllium and Magnesium Hydrides and Halides. Molecules 2023; 28:7507. [PMID: 38005228 PMCID: PMC10673300 DOI: 10.3390/molecules28227507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/24/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023] Open
Abstract
In the search for common bonding patterns in pure and mixed clusters of beryllium and magnesium derivatives, the most stable dimers and trimers involving BeX2 and MgX2 (X = H, F, Cl) have been studied in the gas phase using B3LYP and M06-2X DFT methods and the G4 ab initio composite procedure. To obtain some insight into their structure, stability, and bonding characteristics, we have used two different energy decomposition formalisms, namely MBIE and LMO-EDA, in parallel with the analysis of the electron density with the help of QTAIM, ELF, NCIPLOT, and AdNDP approaches. Some interesting differences are already observed in the dimers, where the stability sequence observed for the hydrides differs entirely from that of the fluorides and chlorides. Trimers also show some peculiarities associated with the presence of compact trigonal cyclic structures that compete in stability with the more conventional hexagonal and linear forms. As observed for dimers, the stability of the trimers changes significantly from hydrides to fluorides or chlorides. Although some of these clusters were previously explored in the literature, the novelty of this work is to provide a holistic approach to the entire series of compounds by using chemical bonding tools, allowing us to understand the stability trends in detail and providing insights for a significant number of new, unexplored structures.
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Affiliation(s)
- Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain; (O.M.); (M.Y.)
| | - M. Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain; (O.M.); (M.Y.)
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain; (O.M.); (M.Y.)
| | - Ibon Alkorta
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain;
| | - José Elguero
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain;
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Mó O, Lamsabhi AM, Guillemin JC, Yáñez M. Ionization, intrinsic basicity, and intrinsic acidity of unsaturated diols of astrochemical interest: 1,1- and 1,2-ethenediol: A theoretical survey. J Comput Chem 2023. [PMID: 37698484 DOI: 10.1002/jcc.27223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/23/2023] [Accepted: 08/25/2023] [Indexed: 09/13/2023]
Abstract
The structure, stability, and bonding characteristics of 1,1- and 1,2-ethenediol, their radical cations, and their protonated and deprotonated species were investigated using high-level ab initio G4 calculations. The electron density of all the neutral and charged systems investigated was analyzed using the QTAIM, ELF, and NBO approaches. The vertical ionization potential (IP) of the five stable tautomers of 1,2-ethenediol and the two stable tautomers of 1,1-ethenediol go from 11.81 to 12.27 eV, whereas the adiabatic ones go from 11.00 to 11.72 eV. The adiabatic ionization leads to a significant charge delocalization along the O-C-C-O skeleton. The most stable protonated form of (Z)-1,2-ethenediol can be reached by the protonation of both the anti-anti and the syn-anti conformers, whereas the most stable deprotonated form arises only from the syn-anti one. Both charged species are extra-stabilized by the formation of an O-H···O intramolecular hydrogen bond (IHB) which is not found in the neutral system. (Z)-1,2-ethenediol is predicted to be less stable, less basic, and more acidic than its cis-glycolaldehyde isomer. The most stable protonated species of (E)-1,2-ethenediol comes from its syn-syn conformer, although the anti-anti conformer is the most basic one. Contrarily, the three conformers yield a common deprotonated species, so their acidity follows exactly their relative stability. Again, the (E)-1,2-ethenediol is predicted to be less stable, less basic, and more acidic than its trans-glycolaldehyde isomer. Neither the neutral nor the protonated or the deprotonated forms of 1,1-ethenediol show the formation of any O-H···O IHB. The most stable protonated species is formed by the protonation of any of the two tautomers, but the most stable deprotonated form arises exclusively from the syn-anti neutral conformer. The conformers of 1,1-ethenediol are much less stable and significantly less basic than their isomer, acetic acid, and only slightly more acidic.
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Affiliation(s)
- Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Madrid, Spain
| | - Al Mokhtar Lamsabhi
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Madrid, Spain
| | - Jean-Claude Guillemin
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR- UMR 6226, Rennes, France
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Madrid, Spain
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Mó O, Montero-Campillo MM, Yáñez M, Alkorta I, Elguero J. Dispersion, Rehybridization, and Pentacoordination: Keys to Understand Clustering of Boron and Aluminum Hydrides and Halides. J Phys Chem A 2023. [PMID: 37418427 PMCID: PMC10364081 DOI: 10.1021/acs.jpca.3c02747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2023]
Abstract
The structure, stability, and bonding characteristics of dimers and trimers involving BX3 and AlX3 (X = H, F, Cl) in the gas phase, many of them explored for the first time, were investigated using different DFT (B3LYP, B3LYP/D3BJ, and M06-2X) and ab initio (MP2 and G4) methods together with different energy decomposition formalisms, namely, many-body interaction-energy and localized molecular orbital energy decomposition analysis. The electron density of the clusters investigated was analyzed with QTAIM, electron localization function, NCIPLOT, and adaptive natural density partitioning approaches. Our results for triel hydride dimers and Al2X6 (X = F, Cl) clusters are in good agreement with previous studies in the literature, but in contrast with the general accepted idea that B2F6 and B2Cl6 do not exist, we have found that they are predicted to be weakly bound systems if dispersion interactions are conveniently accounted for in the theoretical schemes used. Dispersion interactions are also dominant in both homo- and heterotrimers involving boron halide monomers. Surprisingly, B3F9 and B3Cl9 C3v cyclic trimers, in spite of exhibiting rather strong B-X (X = F, Cl) interactions, were found to be unstable with respect to the isolated monomers due to the high energetic cost of the rehybridization of the B atom, which is larger than the two- and three-body stabilization contributions when the cyclic is formed. Another important feature is the enhanced stability of both homo- and heterotrimers in which Al is the central atom because Al is systematically pentacoordinated, whereas this is not the case when the central atom is B, which is only tri- or tetra-coordinated.
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Affiliation(s)
- Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
| | - M Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Ibon Alkorta
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - José Elguero
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
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Salpin J, Haldys V, Guillemin J, Mó O, Yáñez M, Montero‐Campillo MM. Reactivity of Cytosine with Alkylmercury Ions in the Gas Phase: the Critical Role of the Alkyl Chain. Isr J Chem 2023. [DOI: 10.1002/ijch.202300014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Jean‐Yves Salpin
- Université Paris-Saclay Univ Evry CY Cergy Paris Université CNRS LAMBE 91025 Evry-Courcouronnes France
| | - Violette Haldys
- Université Paris-Saclay Univ Evry CY Cergy Paris Université CNRS LAMBE 91025 Evry-Courcouronnes France
| | - Jean‐Claude Guillemin
- Univ Rennes Ecole Nationale Supérieure de Chimie de Rennes CNRS ISCR – UMR6226 F-35000 Rennes France
| | - Otilia Mó
- Departamento de Química, Módulo 13 Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem) Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049 Madrid Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13 Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem) Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049 Madrid Spain
| | - M. Merced Montero‐Campillo
- Departamento de Química, Módulo 13 Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem) Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049 Madrid Spain
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Yáñez M, Ortíz-Chi F, Merino G, Alkorta I. Dismantlement of ammonia upon interaction with Be n (n ≤ 10) clusters. J Comput Chem 2023; 44:159-167. [PMID: 35297069 PMCID: PMC10078787 DOI: 10.1002/jcc.26843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 12/31/2022]
Abstract
The interaction of ammonia with Ben (n < 1-10) clusters has been investigated by density functional theory and ab initio calculations. The main conclusion is that, regardless of the size of the Be cluster, neither the structure of ammonia nor that of the Be clusters are preserved due to a systematic dissociation of its NH bonds and a spontaneous H-shift toward the available Be atoms. This H migration not only leads to rather stable BeH bonds, but dramatically enhances the strength of the BeN bonds as well. Accordingly, the maximum stability is found for the interaction with the beryllium trimer, leading to a complex with three NBe and three BeH bonds. Another maximum in stability, although lower than that reached for n = 3, is found for the Be heptamer, since from n = 6, a new NBe bond is formed, so that complexes from n = 6 to n = 10 are characterized by the formation of a NBe4 moiety, whose stability reaches a maximum at n = 7. The bonding characteristics of the different species formed are analyzed by means of AIM, NBO, ELF and AdNDP approaches.
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Affiliation(s)
- Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, Spain
| | - Filiberto Ortíz-Chi
- CONACYT-Universidad Juárez Autónoma de Tabasco, Centro de Investigación de Ciencia y Tecnología Aplicada de Tabasco, Cunduacán, Tabasco, Mexico
| | - Gabriel Merino
- Centro Investigación & Estudios Avanzados, Unidad Mérida, Dept. Física Aplicada, Merida, Mexico
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC), Madrid, Spain
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Gal JF, Maria PC, Yáñez M, Mó O. Lewis basicity of alkyl carbonates and other esters. The Gutmann Donor Number (DN), a flawed indicator? Boron trifluoride adduct-formation enthalpy, experimentally or computationally determined, as a reliable alternative. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Leonardi M, Lee H, Kostanjsek N, Fornari A, Raggi A, Martinuzzi A, Yáñez M, Almborg AH, Fresk M, Besstrashnova Y, Shoshmin A, Castro SS, Cordeiro ES, Cuenot M, Haas C, Maart S, Maribo T, Miller J, Mukaino M, Snyman S, Trinks U, Anttila H, Paltamaa J, Saleeby P, Frattura L, Madden R, Sykes C, van Gool CH, Hrkal J, Zvolský M, Sládková P, Vikdal M, Harðardóttir GA, Foubert J, Jakob R, Coenen M, Kraus de Camargo O. 20 Years of ICF-International Classification of Functioning, Disability and Health: Uses and Applications around the World. Int J Environ Res Public Health 2022; 19:ijerph191811321. [PMID: 36141593 PMCID: PMC9517056 DOI: 10.3390/ijerph191811321] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/31/2022] [Accepted: 09/02/2022] [Indexed: 05/14/2023]
Abstract
The International Classification of Functioning Disability and Health (ICF) was approved in 2001 and, since then, several studies reported the increased interest about its use in different sectors. A recent overview that summarizes its applications is lacking. This study aims to provide an updated overview about 20 years of ICF application through an international online questionnaire, developed by the byline authors, and sent to each World Health Organization Collaborating Centers of the Family of International Classifications (WHO-FIC CCs). Data was collected during October 2020 and December 2021 and descriptive content analyses were used to report main results. Results show how, in most of the respondent countries represented by WHO-FIC CCs, ICF was mainly used in clinical practice, policy development and social policy, and in education areas. Despite its applications in different sectors, ICF use is not mandatory in most countries but, where used, it provides a biopsychosocial framework for policy development in health, functioning and disability. The study provides information about the needs related to ICF applications, that can be useful to organize targeted intervention plans. Furthermore, this survey methodology can be re-proposed periodically to monitor the use of the ICF in the future.
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Affiliation(s)
- Matilde Leonardi
- Neurology, Public Health, Disability Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
- Correspondence: ; Tel.: +39-02-2394-2511 (ext. 2521); Fax: +39-02-2363-973
| | - Haejung Lee
- Department of Physical Therapy, College of Health and Welfare, Silla University, Busan 46958, Korea
| | - Nenad Kostanjsek
- Classification, Terminology and Standards Unit, World Health Organization (WHO), 1211 Geneva, Switzerland
| | - Arianna Fornari
- Neurology, Public Health, Disability Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Alberto Raggi
- Neurology, Public Health, Disability Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Andrea Martinuzzi
- Department of Conegliano-Pieve di Soligo, IRCCS E. Medea Scientific Institute, 31015 Conegliano, Italy
| | - Manuel Yáñez
- General Directorate of Health Information and Research, Ministry of Health, Mexico City 03100, Mexico
| | | | - Magdalena Fresk
- National Board of Health and Welfare, 10333 Stockholm, Sweden
| | - Yanina Besstrashnova
- Albrecht Federal Scientific Centre of Rehabilitation of the Disabled, 195067 St. Petersburg, Russia
| | - Alexander Shoshmin
- Albrecht Federal Scientific Centre of Rehabilitation of the Disabled, 195067 St. Petersburg, Russia
| | - Shamyr Sulyvan Castro
- Department of Physical Therapy, Universidade Federal do Ceará—UFC, Fortaleza 60020-181, Brazil
| | - Eduardo Santana Cordeiro
- International Society of Experts and Researchers on Functioning and the ICF, University of São Paulo, São Paulo 05508-220, Brazil
| | - Marie Cuenot
- School of Public Health, École des Hautes Études en Santé Publique (EHESP), 35043 Rennes, France
| | | | - Soraya Maart
- Department of Health and Rehabilitation Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town 7700, South Africa
| | - Thomas Maribo
- Department of Public Health, Aarhus University, 8000 Aarhus, Denmark
- DEFACTUM, Corporate Quality-Central Denmark Region, 8000 Aarhus, Denmark
| | - Janice Miller
- Canadian Institute for Health Information (CIHI), Ottawa, ON K2A 4H6, Canada
| | - Masahiko Mukaino
- Department of Rehabilitation Medicine, School of Medicine, Fujita Health University, Toyoake 470-1101, Aichi, Japan
| | - Stefanus Snyman
- Centre for Community Technologies, Nelson Mandela University, Gqeberha 6019, South Africa
- WHO-FIC Collaborating Centre, South African Medical Research Council, Cape Town 8000, South Africa
| | - Ulrike Trinks
- The German Institute for Medical Documentation and Information (DIMDI), 51149 Cologne, Germany
| | - Heidi Anttila
- Finnish Institute for Health and Welfare (THL), 00271 Helsinki, Finland
| | - Jaana Paltamaa
- School of Health and Social Studies, JAMK University of Applied Sciences, 40200 Jyväskylä, Finland
| | - Patricia Saleeby
- Department of Sociology, Criminology, and Social Work, Bradley University, Peoria, IL 61625, USA
| | - Lucilla Frattura
- Classification Area, Azienda Sanitaria Universitaria Giuliano Isontina, 34128 Trieste, Italy
| | - Ros Madden
- Faculty of Health Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Catherine Sykes
- Faculty of Health Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Coen H. van Gool
- National Institute for Public Health and the Environment, 3721 Bilthoven, The Netherlands
| | - Jakub Hrkal
- Institute of Health Information and Statistics of the Czech Republic, 128 01 Prague, Czech Republic
| | - Miroslav Zvolský
- Institute of Health Information and Statistics of the Czech Republic, 128 01 Prague, Czech Republic
| | - Petra Sládková
- Institute of Health Information and Statistics of the Czech Republic, 128 01 Prague, Czech Republic
| | - Marie Vikdal
- Centre Head of NordClass, Department of Classifications and Terminology in Healthcare, The Norwegian Directorate of e-Health, 0277 Oslo, Norway
| | | | - Josephine Foubert
- Census and Disability Analysis Office for National Statistics, Swyddfa Ystadegau Gwladol, Newport SA42, UK
| | - Robert Jakob
- Classification, Terminology and Standards Unit, World Health Organization (WHO), 1211 Geneva, Switzerland
| | - Michaela Coenen
- Institute for Medical Information Processing, Biometry, and Epidemiology-IBE, Chair of Public Health and Health Services Research, LMU Munich, 80539 Munich, Germany
- Pettenkofer School of Public Health, 80539 Munich, Germany
| | - Olaf Kraus de Camargo
- CanChild—Centre for Childhood Disability Research, McMaster University, Hamilton, ON L8S 4L8, Canada
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Pérez-Barcia Á, Montero-Campillo MM, Lamsabhi AM, Salpin JY, Yáñez M. Open questions on toxic heavy metals Cd, Hg and Pb binding small components of DNA and nucleobases. Are there any predictable trends? Phys Chem Chem Phys 2022; 24:20624-20637. [PMID: 36043513 DOI: 10.1039/d2cp02459d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this perspective article, we provide a bibliographic compilation of experimental and theoretical work on Cd, Hg, and Pb, and analyze in detail the bonding of M2+ and CH3M+ (M = Zn, Cd, Hg, Pb) with urea and thiourea as suitable models for larger biochemical bases. Through the use of DFT calculations, we have found that although in principle binding energies decrease according to ionic size (Zn2+ > Cd2+ > Pb2+), Hg2+ largely breaks the trend. Through the use of EDA (Energy Decomposition Analysis) it is possible to explain this behavior, which is essentially due to the strong contribution of polarization to the binding. This conclusion is ratified by the NEDA (Natural Energy Decomposition Analysis) formalism, showing that the charge transfer term is very large in all cases, but particularly in the case of the mercury-thiourea system. The general trends observed for the interactions with CH3M+ monocations show however CH3Hg+ binding energies systematically smaller than the CH3Zn+ ones, likely because the relativistic contraction of the Hg orbitals is very much attenuated by the attachment to the methyl group. Finally, we have investigated the gas-phase reactivity between EtHg+ and uracil to compare it with that exhibited by CH3Hg+ and n-ButHg+ previously described in the literature. This comparison gathers new information that highlights the importance of the length of the alkyl chain attached to the metal on the mechanisms of these reactions. For methyl mercury, only the alkyl transfer process is allowed; for butyl mercury, protonation is clearly favored, and for ethyl mercury, both paths are competitive experimentally.
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Affiliation(s)
- Álvaro Pérez-Barcia
- Departamento de Química Física, Universidad de Vigo, Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - M Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain.
| | - Al Mokhtar Lamsabhi
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain.
| | - Jean-Yves Salpin
- Université Paris-Saclay, Univ. Evry, CNRS, LAMBE, 91025, Evry-Courcouronnes, France.,LAMBE, CY Cergy Paris Université, CNRS, 95000 Cergy, France.
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain.
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Montero-Campillo MM, Alkorta I, Mó O, Elguero J, Yáñez M. On predicting bonding patterns of small clusters of alkaline-earth (Be, Mg) and triel (B, Al) fluorides: a balance between atomic size and electron-deficient character. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2086935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M. Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias, Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, Spain
| | - Ibon Alkorta
- Instituto de Química Médica, IQM-CSIC, Madrid, Spain
| | - Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias, Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, Spain
| | - José Elguero
- Instituto de Química Médica, IQM-CSIC, Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias, Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid, Spain
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Montero-Campillo MM, Mó O, Alkorta I, Elguero J, Yáñez M. Disrupting bonding in azoles through beryllium bonds: Unexpected coordination patterns and acidity enhancement. J Chem Phys 2022; 156:194303. [PMID: 35597641 DOI: 10.1063/5.0089716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Although triazoles and tetrazole are amphoteric and may behave as weak acids, the latter property can be hugely enhanced by beryllium bonds. To explain this phenomenon, the structure and bonding characteristics of the complexes between triazoles and tetrazoles with one and two molecules of BeF2 have been investigated through the use of high-level G4 ab initio calculations. The formation of the complexes between the N basic sites of the azoles and the Be center of the BeF2 molecule and the (BeF2)2 dimer leads to a significant bonding perturbation of both interacting subunits. The main consequence of these electron density rearrangements is the above-mentioned increase in the intrinsic acidity of the azole subunit, evolving from a typical nitrogen base to a very strong nitrogenous acid. This effect is particularly dramatic when the interaction involves the (BeF2)2 dimer, that is, a Lewis acid much stronger than the monomer. Although the azoles investigated have neighboring N-basic sites, their interaction with the (BeF2)2 dimer yields a monodentate complex. However, the deprotonated species becomes extra-stabilized because a second N-Be bond is formed, leading to a new five-membered ring, with the result that the azole-(BeF2)2 complexes investigated become stronger nitrogenous acids than oxyacids such as perchloric acid.
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Affiliation(s)
- M Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - José Elguero
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Madrid 28049, Spain
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Lamsabhi AM, Mó O, Yáñez M. Perturbating Intramolecular Hydrogen Bonds through Substituent Effects or Non-Covalent Interactions. Molecules 2021; 26:3556. [PMID: 34200912 PMCID: PMC8230504 DOI: 10.3390/molecules26123556] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 12/02/2022] Open
Abstract
An analysis of the effects induced by F, Cl, and Br-substituents at the α-position of both, the hydroxyl or the amino group for a series of amino-alcohols, HOCH2(CH2)nCH2NH2 (n = 0-5) on the strength and characteristics of their OH···N or NH···O intramolecular hydrogen bonds (IMHBs) was carried out through the use of high-level G4 ab initio calculations. For the parent unsubstituted amino-alcohols, it is found that the strength of the OH···N IMHB goes through a maximum for n = 2, as revealed by the use of appropriate isodesmic reactions, natural bond orbital (NBO) analysis and atoms in molecules (AIM), and non-covalent interaction (NCI) procedures. The corresponding infrared (IR) spectra also reflect the same trends. When the α-position to the hydroxyl group is substituted by halogen atoms, the OH···N IMHB significantly reinforces following the trend H < F < Cl < Br. Conversely, when the substitution takes place at the α-position with respect to the amino group, the result is a weakening of the OH···N IMHB. A totally different scenario is found when the amino-alcohols HOCH2(CH2)nCH2NH2 (n = 0-3) interact with BeF2. Although the presence of the beryllium derivative dramatically increases the strength of the IMHBs, the possibility for the beryllium atom to interact simultaneously with the O and the N atoms of the amino-alcohol leads to the global minimum of the potential energy surface, with the result that the IMHBs are replaced by two beryllium bonds.
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Affiliation(s)
- Al Mokhtar Lamsabhi
- Departamento de Química (Módulo 13, Facultad de Ciencias) and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain;
| | | | - Manuel Yáñez
- Departamento de Química (Módulo 13, Facultad de Ciencias) and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain;
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12
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I-Ting T, Montero-Campillo MM, Alkorta I, Elguero J, Yáñez M. Large Stabilization Effects by Intramolecular Beryllium Bonds in Ortho-Benzene Derivatives. Molecules 2021; 26:molecules26113401. [PMID: 34199746 PMCID: PMC8199991 DOI: 10.3390/molecules26113401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 11/16/2022] Open
Abstract
Intramolecular interactions are shown to be key for favoring a given structure in systems with a variety of conformers. In ortho-substituted benzene derivatives including a beryllium moiety, beryllium bonds provide very large stabilizations with respect to non-bound conformers and enthalpy differences above one hundred kJ·mol−1 are found in the most favorable cases, especially if the newly formed rings are five or six-membered heterocycles. These values are in general significantly larger than hydrogen bonds in 1,2-dihidroxybenzene. Conformers stabilized by a beryllium bond exhibit the typical features of this non-covalent interaction, such as the presence of a bond critical point according to the topology of the electron density, positive Laplacian values, significant geometrical distortions and strong interaction energies between the donor and acceptor quantified by using the Natural Bond Orbital approach. An isodesmic reaction scheme is used as a tool to measure the strength of the beryllium bond in these systems in terms of isodesmic energies (analogous to binding energies), interaction energies and deformation energies. This approach shows that a huge amount of energy is spent on deforming the donor–acceptor pairs to form the new rings.
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Affiliation(s)
- Tsai I-Ting
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain;
| | - M. Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain;
- Correspondence: (M.M.M.-C.); (I.A.); (M.Y.)
| | - Ibon Alkorta
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain;
- Correspondence: (M.M.M.-C.); (I.A.); (M.Y.)
| | - José Elguero
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain;
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain;
- Correspondence: (M.M.M.-C.); (I.A.); (M.Y.)
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13
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Vos E, Corral I, Montero-Campillo MM, Mó O, Elguero J, Alkorta I, Yáñez M. Spontaneous bond dissociation cascades induced by Be n clusters (n = 2,4). Phys Chem Chem Phys 2021; 23:6448-6454. [PMID: 33720220 DOI: 10.1039/d0cp06009g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High-level single and multireference ab initio calculations show that the Be4 cluster behaves as a very efficient Lewis acid when interacting with conventional Lewis bases such as ammonia, water or hydrogen fluoride, to the point that the corresponding acid-base interaction triggers a sequential dissociation of all the bonds of the Lewis base. Notably, this behavior is already found for the simplest beryllium cluster, the Be2 dimer. However, whereas for Be2 the first dissociation process involves a low activation barrier which is above the reactants, for Be4 all the bond dissociation processes involve barriers below the entrance channel leading to a cascade of successive exothermic processes, which end up spontaneously in a global minimum in which the bonding patterns of both the base and the Lewis acid are completely destroyed. Indeed, the global minimum, in all cases, is stabilized by three-center Be-H-Be bonds and covalent interactions between the Be atoms and the basic center of the base, which replace the initial metallic bond stabilizing the Be4 cluster. As a consequence, in the global minimum the basic atoms (N, O and F) behave as hyper-coordinated centers. Also importantly, the Be4 cluster and its complexes present RHF-UHF instabilities (not reported before for Be4), which require the use of multireference methods to correctly describe them.
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Affiliation(s)
- Eva Vos
- Departamento de Química (Módulo 13, Facultad de Ciencias) and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049-Madrid, Spain.
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14
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Vos E, Montero-Campillo MM, Corral I, Yáñez M, Alkorta I, Elguero J. From Very Strong to Inexistent Be-Be Bonds in the Interactions of Be 2 with π-Systems. Chemphyschem 2020; 21:2701-2708. [PMID: 32598549 DOI: 10.1002/cphc.202000412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/29/2020] [Indexed: 11/06/2022]
Abstract
Isolated Be2 is a typical example of a weakly bound system, but interaction with other systems may give rise to surprising bonding features. The interactions between Be2 and a set of selected neutral Cn Hn (n=2-8) π-systems have been analyzed through the use of G4 and G4MP2 ab initio methods, along with multireference CASPT2//CASPT2 calculations. Our results systematically show that the Cn Hn -Be2 -Cn Hn clusters formed are always very stable. However, the nature of this interaction is completely different when the π-system involved is a closed shell species (n=2, 4, 6, 8), or a radical (n=3, 5, 7). In the first case, the interaction does not occur with the π-system as a whole, but with specific C centers yielding rather polar but strong C-Be bonds. Nonetheless, although the Be-Be distances in these complexes are similar to the ones in compounds with ultra-strong Be-Be bonds, a close examination of their electron density distribution reveals that no Be-Be bonds exist. The situation is totally different when the interaction involves two π-radicals, Cn Hn -Be2 -Cn Hn (n=3, 5, 7). In these cases, a strong Be-Be bond is formed. Indeed, even though Be is electron deficient, the Be2 moiety behaves as an efficient electron donor towards the two π-radicals, so that the different Cn Hn -Be2 -Cn Hn (n=3, 5, 7) clusters are the result of the interaction between Be2 2+ and two L- anions. The characteristics of these two scenarios do not change when dealing with bicyclic π-compounds, such as naphthalene and pentalene, because the interaction with the Be2 moiety is localized on one of the unsaturated cycles, the other being almost a spectator.
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Affiliation(s)
- Eva Vos
- Departamento de Química Facultad de Ciencias, Módulo 13 and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049, Madrid, Spain
| | - M Merced Montero-Campillo
- Departamento de Química Facultad de Ciencias, Módulo 13 and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049, Madrid, Spain
| | - Inés Corral
- Departamento de Química Facultad de Ciencias, Módulo 13 and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049, Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química Facultad de Ciencias, Módulo 13 and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049, Madrid, Spain
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, 28006, Madrid, Spain
| | - José Elguero
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, 28006, Madrid, Spain
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15
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Alkorta I, Elguero J, Oliva-Enrich JM, Yáñez M, Mó O, Montero-Campillo MM. The Importance of Strain (Preorganization) in Beryllium Bonds. Molecules 2020; 25:molecules25245876. [PMID: 33322617 PMCID: PMC7763456 DOI: 10.3390/molecules25245876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 11/17/2022] Open
Abstract
In order to explore the angular strain role on the ability of Be to form strong beryllium bonds, a theoretical study of the complexes of four beryllium derivatives of orthocloso-carboranes with eight molecules (CO, N2, NCH, CNH, OH2, SH2, NH3, and PH3) acting as Lewis bases has been carried out at the G4 computational level. The results for these complexes, which contain besides Be other electron-deficient elements, such as B, have been compared with the analogous ones formed by three beryllium salts (BeCl2, CO3Be and SO4Be) with the same set of Lewis bases. The results show the presence of large and positive values of the electrostatic potential associated to the beryllium atoms in the isolated four beryllium derivatives of ortho-carboranes, evidencing an intrinsically strong acidic nature. In addition, the LUMO orbital in these systems is also associated to the beryllium atom. These features led to short intermolecular distances and large dissociation energies in the complexes of the beryllium derivatives of ortho-carboranes with the Lewis bases. Notably, as a consequence of the special framework provided by the ortho-carboranes, some of these dissociation energies are larger than the corresponding beryllium bonds in the already strongly bound SO4Be complexes, in particular for N2 and CO bases. The localized molecular orbital energy decomposition analysis (LMOEDA) shows that among the attractive terms associated with the dissociation energy, the electrostatic term is the most important one, except for the complexes with the two previously mentioned weakest bases (N2 and CO), where the polarization term dominates. Hence, these results contribute to further confirm the importance of bending on the beryllium environment leading to strong interactions through the formation of beryllium bonds.
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Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, E-28006 Madrid, Spain;
- Correspondence: (I.A.); (J.M.O.-E.); (M.Y.)
| | - José Elguero
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, E-28006 Madrid, Spain;
| | - Josep M. Oliva-Enrich
- Instituto de Química-Física “Rocasolano” (CSIC), Serrano, 119, E-28006 Madrid, Spain
- Correspondence: (I.A.); (J.M.O.-E.); (M.Y.)
| | - Manuel Yáñez
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem), Campus de Excelencia UAM-CSIC, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain; (O.M.); (M.M.M.-C.)
- Correspondence: (I.A.); (J.M.O.-E.); (M.Y.)
| | - Otilia Mó
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem), Campus de Excelencia UAM-CSIC, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain; (O.M.); (M.M.M.-C.)
| | - M. Merced Montero-Campillo
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem), Campus de Excelencia UAM-CSIC, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain; (O.M.); (M.M.M.-C.)
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16
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Chacón KN, Espinal JF, Montero-Campillo MM, Yáñez M, Mejía SM. Looking for the Azeotrope: A Computational Study of (Ethanol) 6-Water, (Methanol) 6-Water, (Ethanol) 7, and (Methanol) 7 Heptamers. J Phys Chem A 2020; 124:7080-7087. [PMID: 32786982 DOI: 10.1021/acs.jpca.0c05362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Considering that a molecular-level understanding of the azeotropic ethanol-water system can contribute to the search of new methodologies and/or modifications of industrial separation methods, this study tries to provide some clues to understand why azeotropes should be expected for ethanol, but not for methanol. Our exploration of the potential energy surface of (ethanol)6-water heteroheptamers, carried out at the B3LYP-D3/6-311++G(d,p) level, shows these heteroclusters to exhibit a cyclic structure where the cooperativity effects between the OH···O HBs is a fundamental ingredient. An analysis of this cooperativity clearly indicates that ethanol-water systems will exhibit a similarly high stability as the heterocluster size approaches the azeotrope. However, a similar behavior should not be expected for the methanol-containing analogues. A comparison between (ethanol)7, (ethanol)6-water, (methanol)7, and (methanol)6-water shows the ethanol-containing systems to be significantly more stable than the methanol-containing analogues. This result is probably due to the fact that the OH···O HBs are weaker than those found between ethanol molecules. However, our atoms in molecule (AIM) and noncovalent interaction (NCI) analyses unambiguously show that important contributors to the enhanced stability of the ethanol-containing clusters are the secondary van der Waals interactions between ethyl groups, which are not observed between methyl groups. Hence, while the formation of stable azeotropes is expected for the case of ethanol, for the methanol-containing analogues, the relative stability of the clusters is significantly smaller, and its formation is accompanied by an increase of the free energy.
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Affiliation(s)
- Kevin N Chacón
- Línea de Investigación en Química Computacional, Grupo de Investigación GIFUJ, Departamento de Química, Facultad de Ciencias, Pontificia Universidad Javeriana, 110231 Bogotá, Colombia
| | - Juan F Espinal
- Química de Recursos Energéticos y MedioAmbiente, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, 050010 Medellín, Colombia
| | - M Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Sol M Mejía
- Línea de Investigación en Química Computacional, Grupo de Investigación GIFUJ, Departamento de Química, Facultad de Ciencias, Pontificia Universidad Javeriana, 110231 Bogotá, Colombia
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17
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Alkorta I, Elguero J, Del Bene JE, Mó O, Montero-Campillo MM, Yáñez M. Mutual Influence of Pnicogen Bonds and Beryllium Bonds: Energies and Structures in the Spotlight. J Phys Chem A 2020; 124:5871-5878. [PMID: 32538087 DOI: 10.1021/acs.jpca.0c03689] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Pnicogen bonds, which are weak noncovalent interactions (NCIs), can be significantly modified by the presence of beryllium bonds, one of the strongest NCIs known. We demonstrate the importance of this influence by studying ternary complexes in which both NCIs are present, that is, the ternary complexes formed by a nitrogen base (NH3, NHCH2, and NCH), a phosphine (fluorophosphane, PH2F) and a beryllium derivative (BeH2, BeF2, BeCl2, BeCO3, and BeSO4). Energies, structures, and nature of the chemical bonding in these complexes are studied by means of ab initio computational methods. The pnicogen bond between the nitrogen base and the phosphine and the beryllium bond between the fluorine atom of fluorophosphane and the beryllium derivative show large cooperativity effects both on energies and geometries, with dissociation energies up to 296 kJ mol-1 and cooperativity up to 104 kJ mol-1 in the most strongly bound complex, CH2HN:PH2F:BeSO4. In the complexes between the strongest nitrogen bases and the strongest beryllium donors, phosphorus-shared and phosphorus-transfer bonds are found.
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Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - José Elguero
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - Janet E Del Bene
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, USA
| | - Otilia Mó
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, E-28049 Madrid, Spain
| | - M Merced Montero-Campillo
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, E-28049 Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, E-28049 Madrid, Spain
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18
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Mó O, Montero-Campillo MM, Yáñez M, Alkorta I, Elguero J. Are Anions of Cyclobutane Beryllium Derivatives Stabilized through Four-Center One-Electron Bonds? J Phys Chem A 2020; 124:1515-1521. [PMID: 31962049 DOI: 10.1021/acs.jpca.9b10187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
High-level G4 ab initio calculations allowed us to show that C4H4(BeX)4 (X = H, Cl) derivatives behave as rather efficient electron capturers due to their ability to trap the extra electron through the formation of a four-membered beryllium ring. This finding is in agreement with previous work showing the ability of highly electron-deficient atoms, such as beryllium, to lead to multicenter one-electron bonds. In our particular case, the formation of the four-center bond is characterized, in very good harmony, by different topological methods such as quantum theory of atoms in molecules (QTAIM), the electron localization function (ELF), and the noncovalent interactions (NCI) approach and is accompanied by large electron affinity values, around 300 kJ·mol-1, in the gas phase. Preliminary results may anticipate that the ability of groups of beryllium atoms to trap electrons decays on going to bigger systems.
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Affiliation(s)
- Otilia Mó
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC, Cantoblanco, E-28049 Madrid , Spain
| | - M Merced Montero-Campillo
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC, Cantoblanco, E-28049 Madrid , Spain
| | - Manuel Yáñez
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC, Cantoblanco, E-28049 Madrid , Spain
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC) , Juan de la Cierva, 3 , E-28006 Madrid , Spain
| | - José Elguero
- Instituto de Química Médica (CSIC) , Juan de la Cierva, 3 , E-28006 Madrid , Spain
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19
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Ferrer M, Montero-Campillo MM, Mó O, Yáñez M, Alkorta I, Elguero J. Bonding between electron-deficient atoms: strong Lewis-acid character preserved in X–Y–X (X = B, Al; Y = Be, Mg) bridges. NEW J CHEM 2020. [DOI: 10.1039/d0nj01803a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Beryllium bis(diazaborolyl) derivatives and their Mg and Al-containing analogues are stable compounds stabilized through covalent bonds between electron-deficient atoms, and behave as good Lewis acids.
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Affiliation(s)
- Maxime Ferrer
- Departamento de Química
- Facultad de Ciencias
- Módulo 13, and Institute of Advanced Chemical Sciences (IadChem). Universidad Autónoma de Madrid
- E-28049 Madrid
- Spain
| | - M. Merced Montero-Campillo
- Departamento de Química
- Facultad de Ciencias
- Módulo 13, and Institute of Advanced Chemical Sciences (IadChem). Universidad Autónoma de Madrid
- E-28049 Madrid
- Spain
| | - Otilia Mó
- Departamento de Química
- Facultad de Ciencias
- Módulo 13, and Institute of Advanced Chemical Sciences (IadChem). Universidad Autónoma de Madrid
- E-28049 Madrid
- Spain
| | - Manuel Yáñez
- Departamento de Química
- Facultad de Ciencias
- Módulo 13, and Institute of Advanced Chemical Sciences (IadChem). Universidad Autónoma de Madrid
- E-28049 Madrid
- Spain
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC)
- E-28006 Madrid
- Spain
| | - José Elguero
- Instituto de Química Médica (CSIC)
- E-28006 Madrid
- Spain
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20
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Gal JF, Maria PC, Yáñez M, Mó O. On the Lewis Basicity of Phosphoramides: A Critical Examination of Their Donor Number through Comparison of Enthalpies of Adduct Formation with SbCl 5 and BF 3. Chemphyschem 2019; 20:2566-2576. [PMID: 31449349 DOI: 10.1002/cphc.201900691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/24/2019] [Indexed: 11/11/2022]
Abstract
The Lewis basicity of a series of phosphoryl compounds was examined using DFT and ab initio methods, including solvation effects. The enthalpies of adduct formation with two archetypal Lewis acids, antimony pentachloride and boron trifluoride, used to define the donor number DN and the BF3 affinity (BF3 A) respectively, were examined. The BF3 adducts allow the use of the high-accuracy G4 approach, whereas for SbCl5 adducts, three different DFT formalisms, including empirical dispersion corrections, were used because the G4 formalism is not available for third-row elements. For a comparison with experimental data, solvation effects were taken into account by using the polarizable continuum model. The experimental BF3 affinities were well reproduced by G4 calculations when including PCM solvation. Conversely, comparisons of our calculated values and experimental results reported in the literature show that SbCl5 enthalpies for phosphoramides are in error. In particular the DN for HMPA should be revised.
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Affiliation(s)
- Jean-François Gal
- Université Côte d'Azur, CNRS, Institut de Chimie de Nice UMR 7272, 06108, NICE, France
| | - Pierre-Charles Maria
- Université Côte d'Azur, CNRS, Institut de Chimie de Nice UMR 7272, 06108, NICE, France
| | - Manuel Yáñez
- Departamento de Química Facultad de Ciencias and Institute of Advanced Chemical Sciences, Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049-, Madrid, Spain
| | - Otilia Mó
- Departamento de Química Facultad de Ciencias and Institute of Advanced Chemical Sciences, Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco, 28049-, Madrid, Spain
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Mó O, Montero‐Campillo MM, Alkorta I, Elguero J, Yáñez M. Ternary Complexes Stabilized by Chalcogen and Alkaline‐Earth Bonds: Crucial Role of Cooperativity and Secondary Noncovalent Interactions. Chemistry 2019; 25:11688-11695. [DOI: 10.1002/chem.201901641] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/31/2019] [Indexed: 01/20/2023]
Affiliation(s)
- Otilia Mó
- Departamento de Química, Módulo 13 Facultad de Ciencias and Institute of, Advanced Chemical Sciences (IadChem) Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco 28049 Madrid Spain
| | - M. Merced Montero‐Campillo
- Departamento de Química, Módulo 13 Facultad de Ciencias and Institute of, Advanced Chemical Sciences (IadChem) Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco 28049 Madrid Spain
| | - Ibon Alkorta
- Instituto de Química Médica, IQM-CSIC Juan de la Cierva, 3 E-28006 Madrid Spain
| | - José Elguero
- Instituto de Química Médica, IQM-CSIC Juan de la Cierva, 3 E-28006 Madrid Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13 Facultad de Ciencias and Institute of, Advanced Chemical Sciences (IadChem) Universidad Autónoma de Madrid Campus de Excelencia UAM-CSIC Cantoblanco 28049 Madrid Spain
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Alkorta I, Montero-Campillo MM, Mó O, Elguero J, Yáñez M. Weak Interactions Get Strong: Synergy between Tetrel and Alkaline-Earth Bonds. J Phys Chem A 2019; 123:7124-7132. [PMID: 31339721 DOI: 10.1021/acs.jpca.9b06051] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Weak and strong noncovalent interactions such as tetrel bonds and alkaline-earth bonds, respectively, cooperate and get reinforced when acting together in ternary complexes of general formula RN··· SiH3F···MY, where MY is a Be or Mg derivative and RN is a N-containing Lewis base with different hybridization patterns. Cooperativity has been studied in the optimized MP2/aug'-cc-pVTZ ternary complexes by looking at changes on geometries, binding energies, 29Si NMR chemical shifts, and topological features according to the atoms in molecules theoretical framework. Our study shows that cooperativity in terms of energy is in general significant: more than 40 kJ/mol, and up to 83.6 kJ/mol in the most favorable case. The weakest the isolated interaction, the strongest the reinforcement in the ternary complex; in this sense, the tetrel bond is shortened enormously, between 0.3 and 0.6 Å. This dramatic reinforcement of the tetrel bond is also nicely reflected in the positive variations of the 29Si chemical shifts in all the ternary complexes. At the same time the ternary complexes are characterized by the presence of totally planar silyl group, due to the pentacoordination of the Si atom. Both the hybridization of the N base and the geometry imposed by the alkaline-earth ligands have a strong influence on the binding energies, as they modify the donor ability of N and the Lewis acid character of the alkaline-earth metal.
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Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica , IQM-CSIC . Juan de la Cierva, 3 , E-28006 Madrid , Spain
| | - M Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC , Cantoblanco, 28049 Madrid , Spain
| | - Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC , Cantoblanco, 28049 Madrid , Spain
| | - José Elguero
- Instituto de Química Médica , IQM-CSIC . Juan de la Cierva, 3 , E-28006 Madrid , Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC , Cantoblanco, 28049 Madrid , Spain
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Lamsabhi AM, Mó O, Yáñez M, Salpin JY. Combined Experimental and Theoretical Survey of the Gas-Phase Reactions of Serine-Ca 2+ Adducts. J Phys Chem A 2019; 123:6241-6250. [PMID: 31268328 DOI: 10.1021/acs.jpca.9b03977] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The association of Ca2+ to serine and the subsequent gas-phase unimolecular reactivity of the [Ca(Ser)]2+ (Ser = Serine) adduct was investigated throughout the use of tandem mass spectrometry techniques and B3LYP/6-311+G(3df,2p)//B3LYP/6-311+G(d,p) density functional theory calculations. In a first step, the structure and relative stability of all possible conformers of serine were obtained and analyzed, as well as the most stable [serine-Ca]2+ adducts. For the analysis of the different potential energy surfaces associated with the gas-phase unimolecular reactivity of these adducts, only those that differ by less than 100 kJ·mol-1 from the global minimum were taken into account. In agreement with previous studies, the serine-Ca2+ global minimum corresponds to a charge-solvated structure in which Ca is tricoordinated to neutral serine. The major peaks observed in the nanoelectrospray-MS/MS spectrum of [Ca(Ser)]2+ adduct correspond to both Coulomb explosions, yielding either CaOH+ + [C3,H6,N,O2]+ or [C2,H4,O,N]+ + [Ca(C,H3,O2)]+, and to the loss of neutrals, namely, CH2O and H2O. Our theoretical survey of the energy profile allow us to conclude that, although all the aforementioned fragmentation processes can have their origin at the global minimum, similar fragmentations involving low-lying conformers, both zwitterionic and nonzwitterionic, compete and should be considered to account for the observed reactivity. We have also found that in some specific cases post-transition state dynamics similar to the ones described before in the literature for formamide-Ca2+ reactions, may also play a role.
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Affiliation(s)
- Al Mokhtar Lamsabhi
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid , Spain
| | - Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid , Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem) , Universidad Autónoma de Madrid , Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid , Spain
| | - Jean-Yves Salpin
- LAMBE, Univ Evry, CNRS, CEA , Université Paris-Saclay , F-91025 Evry-Courcouronnes , France.,LAMBE, UCP , Université Paris-Seine , F-91025 Evry-Courcouronnes , France
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Montero-Campillo MM, Brea O, Mó O, Alkorta I, Elguero J, Yáñez M. Modulating the intrinsic reactivity of molecules through non-covalent interactions. Phys Chem Chem Phys 2019; 21:2222-2233. [DOI: 10.1039/c8cp06908e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Non-covalent interactions as tools for modifying molecular properties.
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Affiliation(s)
- M. Merced Montero-Campillo
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
- 28049-Madrid
- Spain
| | - Oriana Brea
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University
- Stockholm
- Sweden
| | - Otilia Mó
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
- 28049-Madrid
- Spain
| | - Ibon Alkorta
- Instituto de Química Médica, IQM-CSIC
- E-28006 Madrid
- Spain
| | - José Elguero
- Instituto de Química Médica, IQM-CSIC
- E-28006 Madrid
- Spain
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Facultad de Ciencias and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
- 28049-Madrid
- Spain
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25
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Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica, IQM-CSIC, Madrid, Spain
| | - M. Merced Montero-Campillo
- Departamento de Química, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Madrid, Spain
| | - José Elguero
- Instituto de Química Médica, IQM-CSIC, Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Madrid, Spain
| | - Otilia Mó
- Departamento de Química, Facultad de Ciencias, and Institute of Advanced Chemical Sciences (IadChem), Universidad Autónoma de Madrid, Madrid, Spain
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Krim L, Jonusas M, Guillemin JC, Yáñez M, Lamsabhi AM. Reduction of C[double bond, length as m-dash]O functional groups through H addition reactions: a comparative study between H 2CO + H, CH 3CH 2CHO + H and CH 3OCHO + H under interstellar conditions. Phys Chem Chem Phys 2018; 20:19971-19978. [PMID: 30022184 DOI: 10.1039/c8cp03249a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
H-addition reactions on the icy interstellar grains may play an important role in the formation of complex organic molecules. In the present work we propose a comparative study of H2CO + H, CH3CH2CHO + H and CH3OCHO + H solid state reactions at 10 K under interstellar conditions in order to characterize the main reaction pathways involved in the hydrogenation of a CHO functional group. We show that the most probable mechanism for the formation of alcohols under non-energetic conditions through the saturation of the CHO group corresponds to the attachment of the H atom to the CH group with noticeable variations of the energy barriers for each studied reaction. These energy barriers have been calculated to be 8.3, 14.6 and 32.7 kJ mol-1 for H2CO + H, CH3CH2CHO + H and CH3OCHO + H, respectively. The coupling of the experimental and theoretical analysis proves that while the simplest aldehyde, formaldehyde, is easily reduced to methanol, methylformate and propanal behave differently under H-bombardments but they cannot be a source of alcohol formation through H-addition reactions. Consequently, for the formation of alcohols larger than CH3OH, other chemical pathways should be taken into account, probably energetic processing such as the photolysis of interstellar ice analogues containing C-, H- and O-bearing compounds or the coupling of the H-addition reaction and photon-irradiation on species with a CHO functional group.
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Affiliation(s)
- Lahouari Krim
- Sorbonne Université, CNRS, De la Molécule aux Nano-Objets: Réactivité, Interactions, Spectroscopies, MONARIS, 75005, Paris, France.
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Mó O, Yáñez M. Autobiographies of Manuel Yáñez and Otilia Mó. J Phys Chem A 2018; 122:5673-5678. [DOI: 10.1021/acs.jpca.8b01395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mó O, Yáñez M. Publications of Manuel Yáñez and Otilia Mó. J Phys Chem A 2018; 122:5681-5697. [DOI: 10.1021/acs.jpca.8b03863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mó O, Yáñez M. Students and Collaborators of Manuel Yáñez and Otilia Mó. J Phys Chem A 2018; 122:5679-5680. [DOI: 10.1021/acs.jpca.8b01625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
| | - Otilia Mó
- Universidad Autónoma de MadridDepartamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049- Madrid Spain
| | - Manuel Yáñez
- Universidad Autónoma de MadridDepartamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049- Madrid Spain
| | - Ibon Alkorta
- Instituto de Química MédicaC/ Juan de la Cierva, 3, CSIC 28006- Madrid Spain
| | - José Elguero
- Instituto de Química MédicaC/ Juan de la Cierva, 3, CSIC 28006- Madrid Spain
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Alkorta I, Montero-Campillo MM, Elguero J, Yáñez M, Mó O. Trapping One Electron between Three Beryllium Atoms: Very Strong One-Electron Three-Center Bonds. Chemphyschem 2018; 19:1068-1074. [DOI: 10.1002/cphc.201701240] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 01/26/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica (CSIC); Juan de la Cierva, 3 E-28006 Madrid Spain
| | | | - José Elguero
- Instituto de Química Médica (CSIC); Juan de la Cierva, 3 E-28006 Madrid Spain
| | - Manuel Yáñez
- Dep. de Química; Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem); Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC; Cantoblanco E-28049 Madrid Spain
| | - Otilia Mó
- Dep. de Química; Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem); Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC; Cantoblanco E-28049 Madrid Spain
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Montero-Campillo MM, Sanz P, Mó O, Yáñez M, Alkorta I, Elguero J. Alkaline-earth (Be, Mg and Ca) bonds at the origin of huge acidity enhancements. Phys Chem Chem Phys 2018; 20:2413-2420. [PMID: 29308808 DOI: 10.1039/c7cp07891a] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interaction between alkaline-earth derivatives with the general formula X2M (X = H, F and Cl; M = Be, Mg and Ca) and a set of Lewis bases, including first and second-row hydrides, namely YHn (Y = O, N, F, S, P and Cl) hydrides, as well as other typical cyclic organic bases, such as aniline, 1H-1,2,3-triazole, 1H-tetrazole and phenylphosphine, was investigated using the G4 ab initio composite method. Contrary to what was expected, it was found that the interactions involving Mg and Ca derivatives were not necessarily weaker than those between beryllium bonds. The origin is two-fold: larger deformation of the interacting systems when Be-derivatives are involved and appearance of secondary non-covalent interactions in the formation of some of the Mg- and Ca-containing complexes. Hence, the dissociation of the latter complexes may require higher enthalpies than that of the Be complexes. These deformations are triggered by a significant redistribution of electron density of the two interacting moieties, which also result in dramatic changes in the reactivity of the interacting compounds and in particular in the intrinsic basicity of the Lewis bases investigated, to the point that conventional bases, such as ammonia or aniline, upon complexation with MCl2 (M = Be, Mg and Ca), become stronger Brønsted acids than phosphoric acid, whereas other bases, such as 1H-tetrazole, become stronger acids than perchloric acid.
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Martín-Fernández C, Montero-Campillo MM, Alkorta I, Yáñez M, Mó O, Elguero J. Large Proton-Affinity Enhancements Triggered by Noncovalent Interactions. Chemistry 2018; 24:1971-1977. [PMID: 29144560 DOI: 10.1002/chem.201705047] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 12/11/2022]
Abstract
High affinity: The proton affinity (PA) of the OH group of YHx OH compounds is always increased by noncovalent interaction (NCI) with a Lewis base (LB; see figure). This PA enhancement depends on the type of NCI. Weak NCIs can give rise to PA enhancements equal to or even larger than strong NCIs. The binding energies of protonated species play a major role in the case of sigma-hole interactions.
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Affiliation(s)
| | | | - Ibon Alkorta
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, 28006, Madrid, Spain
| | - Manuel Yáñez
- Departamento de Química, Facultad de Ciencias, Módulo 13 and Advanced Chemical Sciences Institute (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049, Madrid, Spain
| | - Otilia Mó
- Departamento de Química, Facultad de Ciencias, Módulo 13 and Advanced Chemical Sciences Institute (IadChem), Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049, Madrid, Spain
| | - José Elguero
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, 28006, Madrid, Spain
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Alkorta I, Montero-Campillo MM, Elguero J, Yáñez M, Mó O. Complexes between neutral oxyacid beryllium salts and dihydrogen: a possible way for hydrogen storage? Dalton Trans 2018; 47:12516-12520. [DOI: 10.1039/c8dt01679h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Very stable 1 : 1 and 1 : 2 complexes between oxyacid beryllium salts and H2 are found.
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Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica
- IQM-CSIC
- 28006 Madrid
- Spain
| | | | - José Elguero
- Instituto de Química Médica
- IQM-CSIC
- 28006 Madrid
- Spain
| | - Manuel Yáñez
- Dep. de Química
- Módulo 13
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
| | - Otilia Mó
- Dep. de Química
- Módulo 13
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
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Brea O, Mó O, Yáñez M, Montero-Campillo MM, Alkorta I, Elguero J. Are beryllium-containing biphenyl derivatives efficient anion sponges? J Mol Model 2017; 24:16. [DOI: 10.1007/s00894-017-3551-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 11/27/2017] [Indexed: 11/28/2022]
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Galán L, Matías-Guiu J, Matias-Guiu JA, Yáñez M, Pytel V, Guerrero-Sola A, Vela-Souto A, Arranz-Tagarro JA, Gómez-Pinedo U, García AG. Cerebrospinal fluid cytotoxicity does not affect survival in amyotrophic lateral sclerosis. Acta Neurol Scand 2017; 136:212-216. [PMID: 28032330 DOI: 10.1111/ane.12717] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Cerebrospinal fluid (CSF) from some patients with amyotrophic lateral sclerosis (ALS) has been demonstrated to significantly reduce the neuronal viability of primary cell cultures of motor neurons. We aimed to study the potential clinical consequences associated with the cytotoxicity of CSF in a cohort of patients with ALS. METHODS We collected CSF from thirty-one patients with ALS. We analysed cytotoxicity by incubating it into the primary cultures of motor cortex neurons. Neural viability was quantified after 24 hours using the colorimetric MTT reduction assay. All patients were followed up from the moment of diagnosis to death, and a complete evaluation during disease progression and survival was performed, including gastrostomy and respiratory assistance. RESULTS Twenty-one patients (67.7%) presented a cytotoxic CSF. There were no significant differences between patients with and without cytotoxicity regarding mean time from symptom onset to the diagnosis, from the diagnosis to death, from the diagnosis to respiratory assistance with BIPAP, from diagnosis to gastrostomy and from the onset of symptoms to death. In Cox regression analysis, bulbar onset, but not cytotoxicity, gender or age at onset, was associated with a lower risk of survival. CONCLUSIONS Cerebrospinal fluid cytotoxicity was not associated with differential survival rates. This suggests that the presence of cytotoxicity in CSF, measured through neuronal viability in primary cultures of motor cortex neurons, could reflect different mechanisms of the disease, but it does not predict disease outcome.
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Affiliation(s)
- L. Galán
- Department of Neurology; Institute of Neurosciences; Hospital Clínico San Carlos; San Carlos Institute for Health Research (IdISSC); Universidad Complutense de Madrid; Madrid Spain
| | - J. Matías-Guiu
- Department of Neurology; Institute of Neurosciences; Hospital Clínico San Carlos; San Carlos Institute for Health Research (IdISSC); Universidad Complutense de Madrid; Madrid Spain
| | - J. A. Matias-Guiu
- Department of Neurology; Institute of Neurosciences; Hospital Clínico San Carlos; San Carlos Institute for Health Research (IdISSC); Universidad Complutense de Madrid; Madrid Spain
| | - M. Yáñez
- Department of Pharmacology; Faculty of Pharmacy; University of Santiago de Compostela; Santiago de Compostela Spain
- Department of Pharmacology and Therapeutics; Teófilo Hernando Institute; Universidad Autónoma de Madrid; Madrid Spain
| | - V. Pytel
- Department of Neurology; Institute of Neurosciences; Hospital Clínico San Carlos; San Carlos Institute for Health Research (IdISSC); Universidad Complutense de Madrid; Madrid Spain
| | - A. Guerrero-Sola
- Department of Neurology; Institute of Neurosciences; Hospital Clínico San Carlos; San Carlos Institute for Health Research (IdISSC); Universidad Complutense de Madrid; Madrid Spain
| | - A. Vela-Souto
- Department of Neurology; Institute of Neurosciences; Hospital Clínico San Carlos; San Carlos Institute for Health Research (IdISSC); Universidad Complutense de Madrid; Madrid Spain
| | - J. A. Arranz-Tagarro
- Department of Pharmacology; Faculty of Pharmacy; University of Santiago de Compostela; Santiago de Compostela Spain
- Department of Pharmacology and Therapeutics; Teófilo Hernando Institute; Universidad Autónoma de Madrid; Madrid Spain
| | - U. Gómez-Pinedo
- Department of Neurology; Institute of Neurosciences; Hospital Clínico San Carlos; San Carlos Institute for Health Research (IdISSC); Universidad Complutense de Madrid; Madrid Spain
| | - A. G. García
- Department of Pharmacology and Therapeutics; Teófilo Hernando Institute; Universidad Autónoma de Madrid; Madrid Spain
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Kusevska E, Montero-Campillo MM, Mó O, Yáñez M. One-Electron Bonds in Frustrated Lewis Pair TPB Ligands: Boron Behaving as a Lewis Base. Angew Chem Int Ed Engl 2017; 56:6788-6792. [DOI: 10.1002/anie.201701161] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 03/02/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Elena Kusevska
- Departamento de Química; Facultad de Ciencias; Módulo 13.; Universidad Autónoma de Madrid; Campus de Excelencia UAM-CSIC; Cantoblanco 28049 Madrid Spain
| | - M. Merced Montero-Campillo
- Departamento de Química; Facultad de Ciencias; Módulo 13.; Universidad Autónoma de Madrid; Campus de Excelencia UAM-CSIC; Cantoblanco 28049 Madrid Spain
| | - Otilia Mó
- Departamento de Química; Facultad de Ciencias; Módulo 13.; Universidad Autónoma de Madrid; Campus de Excelencia UAM-CSIC; Cantoblanco 28049 Madrid Spain
| | - Manuel Yáñez
- Departamento de Química; Facultad de Ciencias; Módulo 13.; Universidad Autónoma de Madrid; Campus de Excelencia UAM-CSIC; Cantoblanco 28049 Madrid Spain
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Martin-Somer A, Spezia R, Yáñez M. Gas-phase reactivity of [Ca(formamide)] 2+ complex: an example of different dynamical behaviours. Philos Trans A Math Phys Eng Sci 2017; 375:rsta.2016.0196. [PMID: 28320901 PMCID: PMC5360897 DOI: 10.1098/rsta.2016.0196] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/12/2016] [Indexed: 06/06/2023]
Abstract
In the present contribution, we have summarized our recent work on the comprehension of [Ca(formamide)]2+ complex gas-phase unimolecular dissociation. By using different theoretical approaches, we were able to revise the original (and typical for such kind of problems) understanding given in terms of stationary points on the potential energy surface, which did not provide a satisfactory explanation of the experimentally observed reactivity. In particular, we point out how non-statistical and non-intrinsic reaction coordinate mechanisms are of fundamental importance.This article is part of the themed issue 'Theoretical and computational studies of non-equilibrium and non-statistical dynamics in the gas phase, in the condensed phase and at interfaces'.
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Affiliation(s)
- Ana Martin-Somer
- Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, CEA CNRS Université Paris Saclay, 91025 Evry, France
- LAMBE, Université d'Evry, 91025 Evry, France
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem). Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Riccardo Spezia
- Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, CEA CNRS Université Paris Saclay, 91025 Evry, France
- LAMBE, Université d'Evry, 91025 Evry, France
| | - Manuel Yáñez
- Departamento de Química, Facultad de Ciencias, Módulo 13, and Institute of Advanced Chemical Sciences (IadChem). Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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39
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40
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Montero-Campillo MM, Corral I, Mó O, Yáñez M, Alkorta I, Elguero J. Beryllium-based fluorenes as efficient anion sponges. Phys Chem Chem Phys 2017; 19:23052-23059. [DOI: 10.1039/c7cp03664g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The F−, Cl−, CN−, NO2−, NO3−, and SO42− anion affinities of 4,5-bis(BeX)-fluorene (X = H, F, Cl, CN, NC, and OCH3) derivatives have been calculated at the B3LYP/6-311+G(3df,2p)//B3LYP/6-31+G(d,p) level of theory.
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Affiliation(s)
| | - Inés Corral
- Departamento de Química
- Facultad de Ciencias
- Módulo 13
- and Institute of Advanced Chemical Sciences (IadChem) Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
| | - Otilia Mó
- Departamento de Química
- Facultad de Ciencias
- Módulo 13
- and Institute of Advanced Chemical Sciences (IadChem) Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
| | - Manuel Yáñez
- Departamento de Química
- Facultad de Ciencias
- Módulo 13
- and Institute of Advanced Chemical Sciences (IadChem) Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
| | - Ibon Alkorta
- Instituto de Química Médica
- CSIC
- 28006 Madrid
- Spain
| | - José Elguero
- Instituto de Química Médica
- CSIC
- 28006 Madrid
- Spain
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41
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Ligny R, Gauthier ES, Yáñez M, Roisnel T, Guillemin JC, Trolez Y. One-step synthesis of conjugated enynenitriles from bromocyanoacetylene. Org Biomol Chem 2017; 15:6050-6056. [DOI: 10.1039/c6ob02590k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bromocyanoacetylene is able to provide conjugated enynenitriles stereoselectively in one step from alkynes, secondary amines and co-catalysts.
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Affiliation(s)
- Romain Ligny
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR 6226
- CNRS
- 35708 Rennes Cedex 7
- France
| | - Etienne S. Gauthier
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR 6226
- CNRS
- 35708 Rennes Cedex 7
- France
| | | | - Thierry Roisnel
- Centre de Diffractométrie X
- Institut des Sciences Chimiques de Rennes
- CNRS (UMR 6226)
- Université de Rennes 1
- 35042 Rennes Cedex
| | - Jean-Claude Guillemin
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR 6226
- CNRS
- 35708 Rennes Cedex 7
- France
| | - Yann Trolez
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR 6226
- CNRS
- 35708 Rennes Cedex 7
- France
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42
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Brea O, Corral I, Mó O, Yáñez M, Alkorta I, Elguero J. Inside Cover: Beryllium-Based Anion Sponges: Close Relatives of Proton Sponges (Chem. Eur. J. 51/2016). Chemistry 2016. [DOI: 10.1002/chem.201605197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Oriana Brea
- Departamento de Química; Facultad de Ciencias; Universidad Autónoma de Madrid; Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain
| | - Inés Corral
- Departamento de Química; Facultad de Ciencias; Universidad Autónoma de Madrid; Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain
| | - Otilia Mó
- Departamento de Química; Facultad de Ciencias; Universidad Autónoma de Madrid; Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain
| | - Manuel Yáñez
- Departamento de Química; Facultad de Ciencias; Universidad Autónoma de Madrid; Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain
| | - Ibon Alkorta
- Instituto de Química Médica, CSIC; C/ Juan de la Cierva, 3 28006 Madrid Spain
| | - José Elguero
- Instituto de Química Médica, CSIC; C/ Juan de la Cierva, 3 28006 Madrid Spain
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Abstract
Beryllium subphthalocyanines have been recently shown to be suitable candidates for photochemical devices if combined with appropriate donor systems. The ability of beryllium subphthalocyanines to self-assemble is explored for the first time by means of density functional theory calculations. Free dimers of beryllium subphtalocyanine and their corresponding complexes with water and pyridine are computed at the wB97X-D/6-311+G(d,p) level of theory. In contrast with the behavior reported for beryllium phthalocyanines, for beryllium subphtalocyanines, beryllium–aza–nitrogen intermolecular interactions are observed, suggesting that these species are likely to self-assemble. Aggregates of related structures such as beryllium subporphyrazines with axial groups confirm the importance of hydrogen bonds in the stacking.
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Affiliation(s)
- M. Merced Montero-Campillo
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Otilia Mó
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Manuel Yáñez
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
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44
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Brea O, Corral I, Mó O, Yáñez M, Alkorta I, Elguero J. Beryllium-Based Anion Sponges: Close Relatives of Proton Sponges. Chemistry 2016; 22:18322-18325. [DOI: 10.1002/chem.201604325] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Oriana Brea
- Departamento de Química; Facultad de Ciencias; Universidad Autónoma de Madrid; Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain
| | - Inés Corral
- Departamento de Química; Facultad de Ciencias; Universidad Autónoma de Madrid; Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain
| | - Otilia Mó
- Departamento de Química; Facultad de Ciencias; Universidad Autónoma de Madrid; Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain
| | - Manuel Yáñez
- Departamento de Química; Facultad de Ciencias; Universidad Autónoma de Madrid; Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain
| | - Ibon Alkorta
- Instituto de Química Médica, CSIC; C/ Juan de la Cierva, 3 28006 Madrid Spain
| | - José Elguero
- Instituto de Química Médica, CSIC; C/ Juan de la Cierva, 3 28006 Madrid Spain
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45
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Kusevska E, Montero-Campillo MM, Mó O, Yáñez M. Boron-Boron One-Electron Sigma Bonds versus B-X-B Bridged Structures. Chemistry 2016; 22:13697-704. [DOI: 10.1002/chem.201600976] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Elena Kusevska
- Departamento de Química, Facultad de Ciencias, Módulo 13; Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC; Cantoblanco 28049 Madrid Spain
| | - M. Merced Montero-Campillo
- Departamento de Química, Facultad de Ciencias, Módulo 13; Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC; Cantoblanco 28049 Madrid Spain
| | - Otilia Mó
- Departamento de Química, Facultad de Ciencias, Módulo 13; Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC; Cantoblanco 28049 Madrid Spain
| | - Manuel Yáñez
- Departamento de Química, Facultad de Ciencias, Módulo 13; Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC; Cantoblanco 28049 Madrid Spain
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46
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Affiliation(s)
- Oriana Brea
- Universidad Autónoma de Madrid; Departamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco; 28049 Madrid Spain
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC).; C/ Juan de la Cierva, 3 28006 Madrid Spain
| | - Otilia Mó
- Universidad Autónoma de Madrid; Departamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco; 28049 Madrid Spain
| | - Manuel Yáñez
- Universidad Autónoma de Madrid; Departamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco; 28049 Madrid Spain
| | - José Elguero
- Instituto de Química Médica (CSIC).; C/ Juan de la Cierva, 3 28006 Madrid Spain
| | - Inés Corral
- Universidad Autónoma de Madrid; Departamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco; 28049 Madrid Spain
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Brea O, Alkorta I, Mó O, Yáñez M, Elguero J, Corral I. Exergonic and Spontaneous Production of Radicals through Beryllium Bonds. Angew Chem Int Ed Engl 2016; 55:8736-9. [DOI: 10.1002/anie.201603690] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Oriana Brea
- Universidad Autónoma de Madrid; Departamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco; 28049 Madrid Spain
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC).; C/ Juan de la Cierva, 3 28006 Madrid Spain
| | - Otilia Mó
- Universidad Autónoma de Madrid; Departamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco; 28049 Madrid Spain
| | - Manuel Yáñez
- Universidad Autónoma de Madrid; Departamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco; 28049 Madrid Spain
| | - José Elguero
- Instituto de Química Médica (CSIC).; C/ Juan de la Cierva, 3 28006 Madrid Spain
| | - Inés Corral
- Universidad Autónoma de Madrid; Departamento de Química, Facultad de Ciencias, Módulo 13, Campus de Excelencia UAM-CSIC, Cantoblanco; 28049 Madrid Spain
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48
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Martín-Sómer A, Yáñez M, Hase WL, Gaigeot MP, Spezia R. Post-Transition State Dynamics in Gas Phase Reactivity: Importance of Bifurcations and Rotational Activation. J Chem Theory Comput 2016; 12:974-82. [DOI: 10.1021/acs.jctc.5b01135] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ana Martín-Sómer
- Departamento
de Química, Facultad de Ciencias, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, E-28049 Madrid, Spain
- Université d’Evry Val d’Essonne, UMR
8587 LAMBE, Boulevard F. Mitterrand, 91025 Evry Cedex, France
- CNRS, Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, UMR 8587, F-91025 Evry Cedex, France
| | - Manuel Yáñez
- Departamento
de Química, Facultad de Ciencias, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, E-28049 Madrid, Spain
| | - William L. Hase
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Marie-Pierre Gaigeot
- Université d’Evry Val d’Essonne, UMR
8587 LAMBE, Boulevard F. Mitterrand, 91025 Evry Cedex, France
- CNRS, Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, UMR 8587, F-91025 Evry Cedex, France
- Institut Universitaire de France (IUF), 103 Blvd. St. Michel, 75005 Paris, France
| | - Riccardo Spezia
- Université d’Evry Val d’Essonne, UMR
8587 LAMBE, Boulevard F. Mitterrand, 91025 Evry Cedex, France
- CNRS, Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement, UMR 8587, F-91025 Evry Cedex, France
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Montero-Campillo MM, Lamsabhi AM, Mó O, Yáñez M. Photochemical Behavior of Beryllium Complexes with Subporphyrazines and Subphthalocyanines. J Phys Chem A 2016; 120:4845-52. [DOI: 10.1021/acs.jpca.5b12374] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- M. Merced Montero-Campillo
- Departamento de Química,
Módulo 13, Universidad Autónoma de Madrid, Campus de
Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid (Spain)
| | - Al Mokhtar Lamsabhi
- Departamento de Química,
Módulo 13, Universidad Autónoma de Madrid, Campus de
Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid (Spain)
| | - Otilia Mó
- Departamento de Química,
Módulo 13, Universidad Autónoma de Madrid, Campus de
Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid (Spain)
| | - Manuel Yáñez
- Departamento de Química,
Módulo 13, Universidad Autónoma de Madrid, Campus de
Excelencia UAM-CSIC, Cantoblanco, 28049 Madrid (Spain)
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50
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Montero-Campillo MM, Mó O, Yáñez M, Benidar A, Rouxel C, Kerisit N, Trolez Y, Guillemin JC. Gas-Phase Infrared Spectroscopy of Substituted Cyanobutadiynes: Roles of the Bromine Atom and Methyl Group as Substituents. Chemphyschem 2016; 17:1018-24. [DOI: 10.1002/cphc.201501153] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Indexed: 11/09/2022]
Affiliation(s)
- M. Merced Montero-Campillo
- Departamento de Quimica, Modulo 13; Universidad Autonoma de Madrid; Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain), Fax: (+34) 91-4975238
| | - Otilia Mó
- Departamento de Quimica, Modulo 13; Universidad Autonoma de Madrid; Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain), Fax: (+34) 91-4975238
| | - Manuel Yáñez
- Departamento de Quimica, Modulo 13; Universidad Autonoma de Madrid; Campus de Excelencia UAM-CSIC, Cantoblanco 28049 Madrid Spain), Fax: (+34) 91-4975238
| | - Abdessamad Benidar
- Institut de Physique de Rennes; UMR 6251 CNRS; Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Cédric Rouxel
- Institut des Sciences Chimiques de Rennes; Ecole Nationale Supérieure de Chimie de Rennes; CNRS, UMR 6226; 11 Allée de Beaulieu, CS 50837 35708 Rennes Cedex 7 France
| | - Nicolas Kerisit
- Institut des Sciences Chimiques de Rennes; Ecole Nationale Supérieure de Chimie de Rennes; CNRS, UMR 6226; 11 Allée de Beaulieu, CS 50837 35708 Rennes Cedex 7 France
| | - Yann Trolez
- Institut des Sciences Chimiques de Rennes; Ecole Nationale Supérieure de Chimie de Rennes; CNRS, UMR 6226; 11 Allée de Beaulieu, CS 50837 35708 Rennes Cedex 7 France
| | - Jean-Claude Guillemin
- Institut des Sciences Chimiques de Rennes; Ecole Nationale Supérieure de Chimie de Rennes; CNRS, UMR 6226; 11 Allée de Beaulieu, CS 50837 35708 Rennes Cedex 7 France
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