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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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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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Bruña S, Valverde-González A, Montero-Campillo MM, Mó O, Cuadrado I. Thiol-yne chemistry of diferrocenylacetylene: from synthesis and electrochemistry to theoretical studies. Dalton Trans 2022; 51:15412-15424. [PMID: 36156664 DOI: 10.1039/d2dt02378d] [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
The thiol-yne coupling chemistry of diferrocenylacetylene (FcCCFc) 1, bearing two electron rich and redox-active ferrocenyl units (Fc = Fe(η5-C5H4)(η5-C5H5)) and an internal triple bond, has been investigated for the first time. In order to determine whether steric limitations might affect hydrothiolation, a model reaction using a functionalized monothiol was tested, namely 2-mercaptoethanol I. The thiol-diferrocenylacetylene reactions were initiated either thermally (in toluene with AIBN) or by UV light irradiation (in THF and in the presence of DMPA as the photoinitiator). The outcomes of these thiol-yne reactions showed a strong dependence on the initiation method used, with the thermally initiated one being the most efficient. These thiol-diferrocenylacetylene reactions mainly afforded the (Z)-stereoisomer of the newly obtained vinyl thioether sulfide FcCHC(Fc)S-(CH2)2OH (2), unlike the more common (E)-vinyl sulfides found in other additions to alkynes. The hydrothiolation of the internal -CC- bond in 1 was successfully extended to dithiol 2,2'-(ethylenedioxy)diethanethiol II, leading to the formation of the (ZZ)-isomer, with four ferrocenyl units, as the major product. According to the electrochemical studies, the new asymmetrical ferrocenyl-vinyl sulfides show iron-iron electronic and electrostatic interactions. Theoretical results for the (Z)-stereoisomer (2) suggest that adiabatic oxidation would lead to the loss of almost one electron on the ferrocenyl subunit closer to the thioether chain. Furthermore, the thiol-yne chemistry of the internal -CC- bond in diferrocenylacetylene has been compared to the external triple bond in ethynylferrocene, the theoretical results of which helped us to rationalize the very different reactivities observed in both metallocenes.
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Affiliation(s)
- Sonia Bruña
- Departamento de Química Inorgánica, Facultad de Ciencias, Calle Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain. .,Institute for Advanced Research in Chemical Sciences (IAdChem), Facultad de Ciencias, Calle Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain
| | - Antonio Valverde-González
- Departamento de Química Inorgánica, Facultad de Ciencias, Calle Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain.
| | - M Merced Montero-Campillo
- Departamento de Química, Facultad de Ciencias, Calle Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain
| | - Otilia Mó
- Institute for Advanced Research in Chemical Sciences (IAdChem), Facultad de Ciencias, Calle Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain.,Departamento de Química, Facultad de Ciencias, Calle Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain
| | - Isabel Cuadrado
- Departamento de Química Inorgánica, Facultad de Ciencias, Calle Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain. .,Institute for Advanced Research in Chemical Sciences (IAdChem), Facultad de Ciencias, Calle Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Ciudad Universitaria de 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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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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Vos E, Corral I, Montero-Campillo MM, Mó O. Significant bonding rearrangements triggered by Mg 4 clusters. J Chem Phys 2021; 154:044302. [PMID: 33514089 DOI: 10.1063/5.0038047] [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: 11/15/2022] Open
Abstract
The structure, stability, and bonding of the complexes formed by the interaction of Mg4 clusters and first row Lewis bases, namely, ammonia, water, and hydrogen fluoride, have been investigated through the use of high-level G4 single-reference and CASPT2 multireference formalisms. The adducts formed reflect the high electrophilicity of the Mg4 cluster through electron density holes in the neighborhood of each metallic center. After the adduct formation, the metallic bonding of the Mg4 moiety is not significantly altered so that the hydrogen shifts from the Lewis base toward the Mg atoms lead to new local minima with enhanced stability. For the particular case of ammonia and water, the global minima obtained when all the hydrogens of the Lewis base are shifted to the Mg4 moiety have in common a very stable scaffold with a N or an O center covalently tetracoordinated to the four Mg atoms, so the initial bonding arrangements of both reactants have completely disappeared. The reactivity features exhibited by these Mg4 clusters suggest that nanostructures of this metal might have an interesting catalytic behavior.
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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
| | - Inés Corral
- 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
| | - 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
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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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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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Abstract
AbstractIn this short review, different phenomena that are triggered by the interaction of different compounds or clusters of compounds with electron-deficient systems, in particular beryllium and boron compounds, have been discussed in some detail. Particular attention was devoted to the huge acidity enhancements that can be induced through the interaction of conventional bases with B or Be containing compounds, which change these conventional bases in extremely strong proton donors. We have paid also attention to the cooperativity between Be bonds with other weak interactions, which results in a substantial increase of their strength, that can lead in some specific cases to the spontaneous formation of ion-pairs in the gas phase. Finally, the behavior of different Be derivatives as electron and anion sponges is discussed as well as the conditions needed to have clusters exhibiting rather strong Be–Be bonds, even though the Be–Be interaction in Be2 dimer is extremely weak. Finally, some attention was paid to systems with extremely short Be–Be distances but without a bond.
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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
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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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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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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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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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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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Bruña S, González-Vadillo AM, Ferrández M, Perles J, Montero-Campillo MM, Mó O, Cuadrado I. Formation of unexpected silicon- and disiloxane-bridged multiferrocenyl derivatives bearing Si-O-CH[double bond, length as m-dash]CH 2 and Si-(CH 2) 2C(CH 3) 3 substituents via cleavage of tetrahydrofuran and trapping of its ring fragments. Dalton Trans 2017; 46:11584-11597. [PMID: 28766631 DOI: 10.1039/c7dt02286g] [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: 01/20/2023]
Abstract
The formation of a family of silicon- and siloxane-bridged multiferrocenyl derivatives carrying different functional groups attached to silicon, including Fc2(CH3)3C(CH2)2SiCH[double bond, length as m-dash]CH2 (5), Fc2(CH2[double bond, length as m-dash]CH-O)SiCH[double bond, length as m-dash]CH2 (6), Fc2(OH)SiCH[double bond, length as m-dash]CH2 (7), Fc2(CH2[double bond, length as m-dash]CH-O)Si-O-Si(O-CH[double bond, length as m-dash]CH2)Fc2 (8) and Fc2(CH2[double bond, length as m-dash]CH-O)Si-O-SiFc3 (9) is described. Silyl vinyl ether molecules 6, 8 and 9 and the heteroleptic vinylsilane 5 resulted from the competing metathesis reaction of lithioferrocene (FcLi), CH2[double bond, length as m-dash]CH-OLi or (CH3)3C(CH2)2Li with the corresponding multifunctional chlorosilane, Cl3SiCH[double bond, length as m-dash]CH2 or Cl3Si-O-SiCl3. The last two organolithium species have been likely formed in situ by fragmentation of the tetrahydrofuran solvent. Diferrocenylvinyloxyvinylsilane 6 is noteworthy since it represents a rare example of a redox-active silyl mononomer in which two different C[double bond, length as m-dash]C polymerisable groups are directly connected to silicon. The molecular structures of the silicon-containing multiferrocenyl species 5, 6, 8 and 9 have been investigated by single-crystal X-ray diffraction studies, demonstrating the capture and storage processes of two ring fragments resulting from the cleavage of cyclic THF in redox-active and stable crystalline organometallic compounds. From electrochemical studies we found that by changing the anion of the supporting electrolyte from [PF6]- to [B(C6F5)4]-, the redox behaviour of tetrametallic disiloxane 8 can be switched from a poorly resolved multistep redox process to four consecutive well-separated one-electron oxidations, corresponding to the sequential oxidation of the four ferrocenyl moieties.
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Affiliation(s)
- Sonia Bruña
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain. and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Spain
| | - Ana Mª González-Vadillo
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
| | - Marta Ferrández
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
| | - Josefina Perles
- Laboratorio de Difracción de Rayos X de Monocristal, Servicio Interdepartamental de Investigación (SIDI), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - M Merced Montero-Campillo
- Departamento de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Otilia Mó
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Spain and Departamento de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Isabel Cuadrado
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain. and Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de 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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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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36
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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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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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Bruña S, Garrido-Castro AF, Perles J, Montero-Campillo MM, Mó O, Kaifer AE, Cuadrado I. Multi-Ferrocene-Containing Silanols as Redox-Active Anion Receptors. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00559] [Citation(s) in RCA: 11] [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] [Indexed: 01/05/2023]
Affiliation(s)
| | | | | | | | | | - Angel E. Kaifer
- Center
for Supramolecular Science and Department of Chemistry, University of Miami, Coral Gables, Florida 33124-0431, United States
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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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41
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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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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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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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Abstract
The electron attachment to 1,8-diBeX-naphthalene derivatives leads to rather stable radical anions through the formation of one-electron Be–Be bonds.
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Affiliation(s)
- Oriana Brea
- Departamento de Química
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
- 28049-Madrid
| | - Otilia Mó
- Departamento de Química
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
- 28049-Madrid
| | - Manuel Yáñez
- Departamento de Química
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Campus de Excelencia UAM-CSIC
- 28049-Madrid
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46
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Marín-Luna M, Alkorta I, Elguero J, Mó O, Yáñez M. Fullerene and corannulene derivatives acting as insulators of Cl−and BeH2. Phys Chem Chem Phys 2016; 18:6059-68. [DOI: 10.1039/c5cp08046k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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
Corannulene and its benzo-derivatives CxH10(x= 20–60) as prototypes of non-planar π-aromatic systems have been studied as insulators of BeH2and Cl−.
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Affiliation(s)
| | - Ibon Alkorta
- Instituto de Química Médica (CSIC)
- E-28006 Madrid
- Spain
| | - José Elguero
- Instituto de Química Médica (CSIC)
- E-28006 Madrid
- Spain
| | - Otilia Mó
- Departamento de Química
- Módulo 13
- Universidad Autónoma de Madrid
- E-28049 Madrid
- Spain
| | - Manuel Yáñez
- Departamento de Química
- Módulo 13
- Universidad Autónoma de Madrid
- E-28049 Madrid
- Spain
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47
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Brea O, Mó O, Yáñez M. Ga(+) Basicity and Affinity Scales Based on High-Level Ab Initio Calculations. Chemphyschem 2015; 16:3206-13. [PMID: 26269224 DOI: 10.1002/cphc.201500574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Indexed: 11/12/2022]
Abstract
The structure, relative stability and bonding of complexes formed by the interaction between Ga(+) and a large set of compounds, including hydrocarbons, aromatic systems, and oxygen-, nitrogen-, fluorine and sulfur-containing Lewis bases have been investigated through the use of the high-level composite ab initio Gaussian-4 theory. This allowed us to establish rather accurate Ga(+) cation affinity (GaCA) and Ga(+) cation basicity (GaCB) scales. The bonding analysis of the complexes under scrutiny shows that, even though one of the main ingredients of the Ga(+) -base interaction is electrostatic, it exhibits a non-negligible covalent character triggered by the presence of the low-lying empty 4p orbital of Ga(+) , which favors a charge donation from occupied orbitals of the base to the metal ion. This partial covalent character, also observed in AlCA scales, is behind the dissimilarities observed when GaCA are compared with Li(+) cation affinities, where these covalent contributions are practically nonexistent. Quite unexpectedly, there are some dissimilarities between several Ga(+) -complexes and the corresponding Al(+) -analogues, mainly affecting the relative stability of π-complexes involving aromatic compounds.
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Affiliation(s)
- Oriana Brea
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049, Madrid, Spain), Fax
| | - Otilia Mó
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049, Madrid, Spain), Fax
| | - Manuel Yáñez
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, Campus de Excelencia UAM-CSIC, Cantoblanco, 28049, Madrid, Spain), Fax.
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48
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Bruña S, Martínez-Montero I, González-Vadillo AM, Martín-Fernández C, Montero-Campillo MM, Mó O, Cuadrado I. Ferrocene and Silicon-Containing Oxathiacrown Macrocycles and Linear Oligo-Oxathioethers Obtained via Thiol–Ene Chemistry of a Redox-Active Bifunctional Vinyldisiloxane. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01683] [Citation(s) in RCA: 12] [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: 12/28/2022]
Affiliation(s)
- Sonia Bruña
- Departamento de Química Inorgánica, Facultad de Ciencias and ‡Departamento
de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Ignacio Martínez-Montero
- Departamento de Química Inorgánica, Facultad de Ciencias and ‡Departamento
de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Ana M González-Vadillo
- Departamento de Química Inorgánica, Facultad de Ciencias and ‡Departamento
de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Carlos Martín-Fernández
- Departamento de Química Inorgánica, Facultad de Ciencias and ‡Departamento
de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - M. Merced Montero-Campillo
- Departamento de Química Inorgánica, Facultad de Ciencias and ‡Departamento
de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Otilia Mó
- Departamento de Química Inorgánica, Facultad de Ciencias and ‡Departamento
de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Isabel Cuadrado
- Departamento de Química Inorgánica, Facultad de Ciencias and ‡Departamento
de Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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49
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Lamsabhi AM, Gutiérrez-Oliva S, Mó O, Toro-Labbé A, Yáñez M. Effects of the ionization in the tautomerism of uracil: A reaction electronic flux perspective. J Comput Chem 2015; 36:2135-45. [DOI: 10.1002/jcc.24054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 07/22/2015] [Accepted: 07/31/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Al Mokhtar Lamsabhi
- Departamento De Química C-13; Universidad Autónoma De Madrid; Cantoblanco 28049 Spain Madrid
| | - Soledad Gutiérrez-Oliva
- Facultad De Química, Nucleus Millennium Chemical Processes and Catalysis (CPC); Laboratorio De Química Teórica Computacional (QTC), Pontificia Universidad Católica De Chile; Santiago Chile
| | - Otilia Mó
- Departamento De Química C-13; Universidad Autónoma De Madrid; Cantoblanco 28049 Spain Madrid
| | - Alejandro Toro-Labbé
- Facultad De Química, Nucleus Millennium Chemical Processes and Catalysis (CPC); Laboratorio De Química Teórica Computacional (QTC), Pontificia Universidad Católica De Chile; Santiago Chile
| | - Manuel Yáñez
- Departamento De Química C-13; Universidad Autónoma De Madrid; Cantoblanco 28049 Spain Madrid
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50
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Brea O, Yáñez M, Mó O, Lamsabhi AM. Inside Cover: Why Is the Spontaneous Deprotonation of [Cu(uracil) 2] 2+Complexes Accompanied by Enolization of the System? (ChemPhysChem 11/2015). Chemphyschem 2015. [DOI: 10.1002/cphc.201590058] [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: 11/11/2022]
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