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Liu N, Li Q. Group 12 Carbonates and their Binary Complexes with Nitrogen Bases and FH 2 Z Molecules (Z=P, As, Sb): Synergism in Forming Ternary Complexes. Chemphyschem 2021; 22:1698-1705. [PMID: 34106509 DOI: 10.1002/cphc.202100348] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/03/2021] [Indexed: 11/10/2022]
Abstract
MCO3 (M=Zn, Cd, Hg) forms a spodium bond with nitrogen-containing bases (HCN, NHCH2 , NH3 ) and a pnicogen bond with FH2 Z (Z=P, As, Sb). The spodium bond is very strong with the interaction energy ranging from -31 kcal/mol to -56 kcal/mol. Both NHCH2 and NH3 have an equal electrostatic potential on the N atom, but the corresponding interaction energy is differentiated by 1.5-4 kcal/mol due to the existence of spodium and hydrogen bonds in the complex with NHCH2 as the electron donor. The spodium bond is weakest in the HCN complex, which is not consistent with the change of the binding distance. The spodium bond becomes stronger in the CdCO3 <ZnCO3 <HgCO3 sequence although the positive electrostatic potential on the Hg atom is smallest. This is because the electrostatic interaction is dominant in the spodium-bonded complexes of CdCO3 and ZnCO3 but the polarization interaction in that of HgCO3 . The pnicogen bond is much weaker than the spodium bond and the former has a larger enhancement than the latter in the FH2 Z⋅⋅⋅OCO2 M⋅⋅⋅N-base ternary complexes.
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Affiliation(s)
- Na Liu
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Qingzhong Li
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
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Léon I, Tasinato N, Spada L, Alonso ER, Mata S, Balbi A, Puzzarini C, Alonso JL, Barone V. Looking for the Elusive Imine Tautomer of Creatinine: Different States of Aggregation Studied by Quantum Chemistry and Molecular Spectroscopy. Chempluschem 2021; 86:1374-1386. [PMID: 34255935 PMCID: PMC8519097 DOI: 10.1002/cplu.202100224] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/22/2021] [Indexed: 01/06/2023]
Abstract
New spectroscopic experiments and state-of-the-art quantum-chemical computations of creatinine in different aggregation states unequivocally unveiled a significant tuning of tautomeric equilibrium by the environment: from the exclusive presence of the amine tautomer in the solid state and aqueous solution to a mixture of amine and imine tautomers in the gas phase. Quantum-chemical calculations predict the amine species as the most stable tautomer by about 30 kJ mol-1 in condensed phases. On the contrary, moving to the isolated forms, both Z and E imine isomers become more stable by about 7 kJ mol-1 . Since the imine isomers and one amine tautomer are separated by significant energy barriers, all of them should be present in the gas phase. This prediction has indeed been confirmed by high-resolution rotational spectroscopy, which provides the first experimental characterization of the elusive imine tautomer. The interpretation of the complicated hyperfine structure of the rotational spectrum, originated by three 14 N nuclei, makes it possible to use the spectral signatures as a sort of fingerprint for each individual tautomer in the complex sample.
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Affiliation(s)
- Iker Léon
- Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia Parque Cientifico UVa, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Nicola Tasinato
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa, Italy
| | - Lorenzo Spada
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa, Italy.,Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum -, Università di Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Elena R Alonso
- Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia Parque Cientifico UVa, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Santiago Mata
- Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia Parque Cientifico UVa, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Alice Balbi
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa, Italy
| | - Cristina Puzzarini
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum -, Università di Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Jose L Alonso
- Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia Parque Cientifico UVa, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa, Italy
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Bauzá A, Frontera A, Mooibroek TJ. π-Hole Interactions Involving Nitro Aromatic Ligands in Protein Structures. Chemistry 2019; 25:13436-13443. [PMID: 31453653 PMCID: PMC6856858 DOI: 10.1002/chem.201903404] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Indexed: 01/03/2023]
Abstract
Studying noncanonical intermolecular interactions between a ligand and a protein constitutes an emerging research field. Identifying synthetically accessible molecular fragments that can engage in intermolecular interactions is a key objective in this area. Here, it is shown that so-called "π-hole interactions" are present between the nitro moiety in nitro aromatic ligands and lone pairs within protein structures (water and protein carbonyls and sulfurs). Ample structural evidence was found in a PDB analysis and computations reveal interaction energies of about -5 kcal mol-1 for ligand-protein π-hole interactions. Several examples are highlighted for which a π-hole interaction is implicated in the superior binding affinity or inhibition of a nitro aromatic ligand versus a similar non-nitro analogue. The discovery that π-hole interactions with nitro aromatics are significant within protein structures parallels the finding that halogen bonds are biologically relevant. This has implications for the interpretation of ligand-protein complexation phenomena, for example, involving the more than 50 approved drugs that contain a nitro aromatic moiety.
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Affiliation(s)
- Antonio Bauzá
- Department of ChemistryUniversitat de les Illes BalearsCrta. de Valldemossa km 7.507122Palma (Baleares)Spain
| | - Antonio Frontera
- Department of ChemistryUniversitat de les Illes BalearsCrta. de Valldemossa km 7.507122Palma (Baleares)Spain
| | - Tiddo Jonathan Mooibroek
- van ‘t Hoff Institute for Molecular SciencesUniversiteit van AmsterdamScience Park 9041098XHAmsterdamThe Netherlands
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Wang J, Spada L, Chen J, Gao S, Alessandrini S, Feng G, Puzzarini C, Gou Q, Grabow J, Barone V. The Unexplored World of Cycloalkene–Water Complexes: Primary and Assisting Interactions Unraveled by Experimental and Computational Spectroscopy. Angew Chem Int Ed Engl 2019; 58:13935-13941. [DOI: 10.1002/anie.201906977] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/12/2019] [Indexed: 01/28/2023]
Affiliation(s)
- Juan Wang
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
- Institut für Physikalische Chemie & ElektrochemieGottfried-Wilhelm-Leibniz-Universität Hannover Callinstr. 3A 30167 Hannover Germany
| | - Lorenzo Spada
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 I-40126 Bologna Italy
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Junhua Chen
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | - Shuang Gao
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | | | - Gang Feng
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | - Cristina Puzzarini
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 I-40126 Bologna Italy
| | - Qian Gou
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | - Jens‐Uwe Grabow
- Institut für Physikalische Chemie & ElektrochemieGottfried-Wilhelm-Leibniz-Universität Hannover Callinstr. 3A 30167 Hannover Germany
| | - Vincenzo Barone
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
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Wang J, Spada L, Chen J, Gao S, Alessandrini S, Feng G, Puzzarini C, Gou Q, Grabow J, Barone V. The Unexplored World of Cycloalkene–Water Complexes: Primary and Assisting Interactions Unraveled by Experimental and Computational Spectroscopy. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906977] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Juan Wang
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
- Institut für Physikalische Chemie & ElektrochemieGottfried-Wilhelm-Leibniz-Universität Hannover Callinstr. 3A 30167 Hannover Germany
| | - Lorenzo Spada
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 I-40126 Bologna Italy
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Junhua Chen
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | - Shuang Gao
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | | | - Gang Feng
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | - Cristina Puzzarini
- Dipartimento di Chimica “Giacomo Ciamician”University of Bologna Via Selmi 2 I-40126 Bologna Italy
| | - Qian Gou
- Department of ChemistrySchool of Chemistry and Chemical EngineeringChongqing University Daxuecheng South Rd. 55 401331 Chongqing China
| | - Jens‐Uwe Grabow
- Institut für Physikalische Chemie & ElektrochemieGottfried-Wilhelm-Leibniz-Universität Hannover Callinstr. 3A 30167 Hannover Germany
| | - Vincenzo Barone
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italy
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Juanes M, Saragi RT, Caminati W, Lesarri A. The Hydrogen Bond and Beyond: Perspectives for Rotational Investigations of Non‐Covalent Interactions. Chemistry 2019; 25:11402-11411. [DOI: 10.1002/chem.201901113] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 04/15/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Marcos Juanes
- Departamento de Química Física y Química Inorgánica—IU CINQUIMAFacultad de CienciasUniversidad de Valladolid 47011 Valladolid Spain
| | - Rizalina T. Saragi
- Departamento de Química Física y Química Inorgánica—IU CINQUIMAFacultad de CienciasUniversidad de Valladolid 47011 Valladolid Spain
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician”Università di Bologna Via Selmi 2 40126 Bologna Italy
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica—IU CINQUIMAFacultad de CienciasUniversidad de Valladolid 47011 Valladolid Spain
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