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Perrin CL. Symmetry of Hydrogen Bonds: Application of NMR Method of Isotopic Perturbation and Relevance of Solvatomers. Molecules 2023; 28:molecules28114462. [PMID: 37298938 DOI: 10.3390/molecules28114462] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 05/25/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023] Open
Abstract
Short, strong, symmetric, low-barrier hydrogen bonds (H-bonds) are thought to be of special significance. We have been searching for symmetric H-bonds by using the NMR technique of isotopic perturbation. Various dicarboxylate monoanions, aldehyde enols, diamines, enamines, acid-base complexes, and two sterically encumbered enols have been investigated. Among all of these, we have found only one example of a symmetric H-bond, in nitromalonamide enol, and all of the others are equilibrating mixtures of tautomers. The nearly universal lack of symmetry is attributed to the presence of these H-bonded species as a mixture of solvatomers, meaning isomers (or stereoisomers or tautomers) that differ in their solvation environment. The disorder of solvation renders the two donor atoms instantaneously inequivalent, whereupon the hydrogen attaches to the less well solvated donor. We therefore conclude that there is no special significance to short, strong, symmetric, low-barrier H-bonds. Moreover, they have no heightened stability or else they would have been more prevalent.
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Affiliation(s)
- Charles L Perrin
- Department of Chemistry & Biochemistry University of California, La Jolla, San Diego, CA 92093, USA
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Liu F, Wang M, Liu X, Wang B, Li C, Liu C, Lin Z, Huang F. A Rapid and Robust Light-and-Solution-Triggered In Situ Crafting of Organic Passivating Membrane over Metal Halide Perovskites for Markedly Improved Stability and Photocatalysis. NANO LETTERS 2021; 21:1643-1650. [PMID: 33570964 DOI: 10.1021/acs.nanolett.0c04299] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Despite intriguing optoelectronic attributes in solar cells, light-emitting diodes, and photocatalysis, the instability of organic-inorganic perovskites poises a grand challenge for long-term applications. Herein, we report a simple yet robust strategy via light-and-solution treatment to create an organic membrane that effectively passivates CH3NH3PbI3 (MAPbI3). Specifically, the restructuring of MA+ is observed on MAPbI3 in aqueous hydrogen iodide. HIO3 molecules are generated via the reaction between water and I2 induced by photocatalysis when MAPbI3 is illuminated. The hydrogen bonding between HIO3 molecules at different perovskite particles not only directs the creeplike growth of perovskite particles but also in situ forms a passivating layer firmly anchoring on the perovskite surface with hydrophilic -NH3+ groups tethering to perovskites and hydrophobic -CH3 moieties exposed to air. Intriguingly, such MA+ film greatly improves the stability of perovskites against moisture as well as their crystal quality, considerably enhancing the photocatalytic hydrogen evolution rate.
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Affiliation(s)
- Fangyan Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou 510275, China
| | - Mengye Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiaolong Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou 510275, China
| | - Biao Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou 510275, China
| | - Caifu Li
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou 510275, China
| | - Chenning Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhang Lin
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Feng Huang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou 510275, China
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Hansen PE, Spanget-Larsen J. NMR and IR Investigations of Strong Intramolecular Hydrogen Bonds. Molecules 2017; 22:E552. [PMID: 28353675 PMCID: PMC6154318 DOI: 10.3390/molecules22040552] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/20/2017] [Accepted: 03/24/2017] [Indexed: 11/24/2022] Open
Abstract
For the purpose of this review, strong hydrogen bonds have been defined on the basis of experimental data, such as OH stretching wavenumbers, νOH, and OH chemical shifts, δOH (in the latter case, after correction for ring current effects). Limits for O-H···Y systems are taken as 2800 > νOH > 1800 cm-1, and 19 ppm > δOH > 15 ppm. Recent results as well as an account of theoretical advances are presented for a series of important classes of compounds such as β-diketone enols, β-thioxoketone enols, Mannich bases, proton sponges, quinoline N-oxides and diacid anions. The O···O distance has long been used as a parameter for hydrogen bond strength in O-H···O systems. On a broad scale, a correlation between OH stretching wavenumbers and O···O distances is observed, as demonstrated experimentally as well as theoretically, but for substituted β-diketone enols this correlation is relatively weak.
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Affiliation(s)
- Poul Erik Hansen
- Department of Science and Environment, Roskilde University, Universitetsvej 1, P.O. Box 260, DK-4000 Roskilde, Denmark.
| | - Jens Spanget-Larsen
- Department of Science and Environment, Roskilde University, Universitetsvej 1, P.O. Box 260, DK-4000 Roskilde, Denmark.
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Noroozi Pesyan N, Rashidnejad H. Isotopic splitting patterns in the (13) C NMR spectra of some partially deuterated 1-aryl-2-(phenyldiazenyl)butane-1,3-dione and 4-hydroxy-3-(phenyldiazenyl)-2H-chromen-2-one: evidence for elucidation of tautomeric forms. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:358-364. [PMID: 26776053 DOI: 10.1002/mrc.4390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 10/20/2015] [Accepted: 10/29/2015] [Indexed: 06/05/2023]
Abstract
Nuclear magnetic resonance spectra of synthesized azo dyes derived from aniline derivatives in reaction with benzoylacetone and 4-hydroxycoumarin were studied in both CDCl3 and (CD3 )2 SO (two drops of D2 O were added into solutions of dyes). All dyes showed intramolecular hydrogen bonding. Dyes derived from o-nitro aniline in the reaction with benzoylacetone, and 4-hydroxycoumarin showed bifurcated intramolecular hydrogen bonds. The solvent-substrate proton exchange of dyes derived from benzoylacetone and 4-hydroxycoumarin was examined in the presence of two drops of D2 O. Among ten dye samples, two dyes derived from benzoylacetone did not show deuteration, three dyes showed partial deuteration and five dyes showed full deuteration under similar conditions. For the partially deuterated dyes the β-isotope effect in (13) C splitting was investigated and was used for the determination of the predominant tautomeric form.
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Affiliation(s)
- Nader Noroozi Pesyan
- Faculty of Chemistry, Department of Organic Chemistry, Urmia University, 57159, Urmia, Iran
| | - Hamid Rashidnejad
- Faculty of Chemistry, Department of Organic Chemistry, Urmia University, 57159, Urmia, Iran
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Sutter K, Aucar GA, Autschbach J. Analysis of Proton NMR in Hydrogen Bonds in Terms of Lone-Pair and Bond Orbital Contributions. Chemistry 2015; 21:18138-55. [DOI: 10.1002/chem.201502346] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Indexed: 11/10/2022]
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Isotope effects on chemical shifts in the study of intramolecular hydrogen bonds. Molecules 2015; 20:2405-24. [PMID: 25647577 PMCID: PMC6272349 DOI: 10.3390/molecules20022405] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 12/17/2014] [Accepted: 01/05/2015] [Indexed: 11/16/2022] Open
Abstract
The paper deals with the use of isotope effects on chemical shifts in characterizing intramolecular hydrogen bonds. Both so-called resonance-assisted (RAHB) and non-RAHB systems are treated. The importance of RAHB will be discussed. Another very important issue is the borderline between “static” and tautomeric systems. Isotope effects on chemical shifts are particularly useful in such studies. All kinds of intramolecular hydrogen bonded systems will be treated, typical hydrogen bond donors: OH, NH, SH and NH+, typical acceptors C=O, C=N, C=S C=N−. The paper will be deal with both secondary and primary isotope effects on chemical shifts. These two types of isotope effects monitor the same hydrogen bond, but from different angles.
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Durlak P, Mierzwicki K, Latajka Z. Investigations of the Very Short Hydrogen Bond in the Crystal of Nitromalonamide via Car–Parrinello and Path Integral Molecular Dynamics. J Phys Chem B 2013; 117:5430-40. [DOI: 10.1021/jp312473b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Piotr Durlak
- Faculty
of Chemistry, University of Wrocław,
14 F. Joliot-Curie Street, 50-383 Wrocław, Poland
| | - Krzysztof Mierzwicki
- Faculty
of Chemistry, University of Wrocław,
14 F. Joliot-Curie Street, 50-383 Wrocław, Poland
| | - Zdzisław Latajka
- Faculty
of Chemistry, University of Wrocław,
14 F. Joliot-Curie Street, 50-383 Wrocław, Poland
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Durlak P, Latajka Z. Ab InitioMolecular Dynamics Study of the Very Short O–H···O Hydrogen Bonds in the Condensed Phases. J Chem Theory Comput 2012; 9:65-72. [DOI: 10.1021/ct300589r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Piotr Durlak
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Zdzisław Latajka
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland
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OH stretching frequencies in systems with intramolecular hydrogen bonds: Harmonic and anharmonic analyses. Chem Phys 2011. [DOI: 10.1016/j.chemphys.2011.09.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Deuterium isotope effects on 13C and 15N chemical shifts of intramolecularly hydrogen-bonded enaminocarbonyl derivatives of Meldrum’s and Tetronic acid. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.03.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zarycz N, Aucar GA, Védova COD. NMR Spectroscopic Parameters of Molecular Systems with Strong Hydrogen Bonds. J Phys Chem A 2010; 114:7162-72. [DOI: 10.1021/jp1019334] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Natalia Zarycz
- Physics Department, Exact and Natural Science Faculty, Northeastern University of Argentina and Institute of Modeling and Innovation on Technology, IMIT, CONICET-UNNE
| | - Gustavo A. Aucar
- Physics Department, Exact and Natural Science Faculty, Northeastern University of Argentina and Institute of Modeling and Innovation on Technology, IMIT, CONICET-UNNE
| | - Carlos O. Della Védova
- CEQUINOR (UNLP-CONICET) and Departamento de Química, Facultad de Ciencias Exactas - Univ. Nac. de La Plata, CC962 and Laboratorio de Servicios a la Industria y al Sistema Científico (LaSeISiC), UNLP-CIC−CONICET), La Plata (CP 1900), Argentina
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