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Lewkowicz A, Walczewska-Szewc K, Czarnomska M, Gruszczyńska E, Pierpaoli M, Bogdanowicz R, Gryczyński Z. Molecular Design Using Selected Concentration Effects in Optically Activated Fluorescent Matrices. Int J Mol Sci 2024; 25:4804. [PMID: 38732024 PMCID: PMC11084466 DOI: 10.3390/ijms25094804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/19/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
Molecular physics plays a pivotal role in various fields, including medicine, pharmaceuticals, and broader industrial applications. This study aims to enhance the methods for producing specific optically active materials with distinct spectroscopic properties at the molecular level, which are crucial for these sectors, while prioritizing human safety in both production and application. Forensic science, a significant socio-economic field, often employs hazardous substances in analyzing friction ridges on porous surfaces, posing safety concerns. In response, we formulated novel, non-toxic procedures for examining paper evidence, particularly thermal papers. Our laboratory model utilizes a polyvinyl alcohol polymer as a rigid matrix to emulate the thermal paper's environment, enabling precise control over the spectroscopic characteristics of 1,8-diazafluoro-9-one (DFO). We identified and analyzed the cyclodimer 1,8-diazafluoren-9-one (DAK DFO), which is a non-toxic and biocompatible alternative for revealing forensic marks. The reagents used to preserve fingerprints were optimized for their effectiveness and stability. Using stationary absorption and emission spectroscopy, along with time-resolved emission studies, we verified the spectroscopic attributes of the new structures under deliberate aggregation conditions. Raman spectroscopy and quantum mechanical computations substantiated the cyclodimer's configuration. The investigation provides robust scientific endorsement for the novel compound and its structural diversity, influenced by the solvatochromic sensitivity of the DFO precursor. Our approach to monitoring aggregation processes signifies a substantial shift in synthetic research paradigms, leveraging simple chemistry to yield an innovative contribution to forensic science methodologies.
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Affiliation(s)
- Aneta Lewkowicz
- Institute of Experimental Physics, Faculty of Mathematics, Physics, and Informatics, University of Gdansk, ul. Wita Stwosza 57, 80-308 Gdańsk, Poland; (M.C.); (E.G.)
| | - Katarzyna Walczewska-Szewc
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100 Toruń, Poland
| | - Martyna Czarnomska
- Institute of Experimental Physics, Faculty of Mathematics, Physics, and Informatics, University of Gdansk, ul. Wita Stwosza 57, 80-308 Gdańsk, Poland; (M.C.); (E.G.)
| | - Emilia Gruszczyńska
- Institute of Experimental Physics, Faculty of Mathematics, Physics, and Informatics, University of Gdansk, ul. Wita Stwosza 57, 80-308 Gdańsk, Poland; (M.C.); (E.G.)
| | - Mattia Pierpaoli
- Department of Metrology and Optoelectronics, Faculty of Electronics, Telecommunication, and Informatics, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland; (M.P.); (R.B.)
| | - Robert Bogdanowicz
- Department of Metrology and Optoelectronics, Faculty of Electronics, Telecommunication, and Informatics, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland; (M.P.); (R.B.)
| | - Zygmunt Gryczyński
- Department of Physics and Astronomy, Texas Christian University, 2995 S. University Dr., Fort Worth, TX 76109, USA;
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Sit I, Fashina BT, Baldo AP, Leung K, Grassian VH, Ilgen AG. Formic and acetic acid p Ka values increase under nanoconfinement. RSC Adv 2023; 13:23147-23157. [PMID: 37533784 PMCID: PMC10390803 DOI: 10.1039/d2ra07944e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 06/22/2023] [Indexed: 08/04/2023] Open
Abstract
Organic acids are prevalent in the environment and their acidity and the corresponding dissociation constants can change under varying environmental conditions. The impact of nanoconfinement (when acids are confined within nanometer-scale domains) on physicochemical properties of chemical species is poorly understood and is an emerging field of study. By combining infrared and Raman spectroscopies with molecular dynamics (MD) simulations, we quantified the effect of nanoconfinement in silica nanopores on one of the fundamental chemical reactions-the dissociation of organic acids. The pKa of formic and acetic acids confined within cylindrical silica nanopores with 4 nm diameters were measured. MD models were constructed to calculate the shifts in the pKa values of acetic acid nanoconfined within 1, 2, 3, and 4 nm silica slit pores. Both experiments and MD models indicate a decrease in the apparent acid dissociation constants (i.e., increase in the pKa values) when organic acids are nanoconfined. Therefore, nanoconfinement stabilizes the protonated species. We attribute this observation to (1) a decrease in the average dielectric response of nanoconfined aqueous solutions where charge screening may be decreased; or (2) an increase in proton concentration inside nanopores, which would shift the equilibrium towards the protonated form. Overall, the results of this study provide the first quantification of the pKa values for nanoconfined formic and acetic acids and pave the way for a unifying theory predicting the impact of nanoconfinement on acid-base chemistry.
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Affiliation(s)
- Izaac Sit
- Department of Nanoengineering, University of California San Diego La Jolla CA 92093 USA
| | - Bidemi T Fashina
- Geochemistry Department, Sandia National Laboratories Albuquerque NM 87123 USA
| | - Anthony P Baldo
- Geochemistry Department, Sandia National Laboratories Albuquerque NM 87123 USA
| | - Kevin Leung
- Geochemistry Department, Sandia National Laboratories Albuquerque NM 87123 USA
| | - Vicki H Grassian
- Department of Chemistry & Biochemistry, University of California San Diego La Jolla CA 92093 USA
| | - Anastasia G Ilgen
- Geochemistry Department, Sandia National Laboratories Albuquerque NM 87123 USA
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Han Y, Wang Z, Qiao R, Cheng J, Jiang C, Wang H. Study on depolymerization kinetics of formic acid dimers in binary mixture. Phys Chem Chem Phys 2023. [PMID: 37378660 DOI: 10.1039/d3cp01876h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
In this study, polarization Raman spectra were collected for binary mixtures of formic acid/methanol and formic acid/acetonitrile with different volume fractions. The broad band of formic acid in the CO vibration region was divided into four vibration peaks, corresponding to CO symmetric and anti-symmetric stretching vibration from cyclic dimer, CO stretching from open dimer, and CO stretching from the free monomer. The experiments showed that as the volume fraction of formic acid in the binary mixture decreased, the cyclic dimer gradually converted to the open dimer, and at a volume fraction of 0.1, fully depolymerized into monomer form (free monomer, solvated monomer, and hydrogen bonding monomer clusters with solvent). The contribution percentage of the total CO stretching intensity of each structure at different concentrations was quantitatively calculated using high resolution infrared spectroscopy, and the results were consistent with the conclusions predicted by polarization Raman spectroscopy. Concentration-triggered 2D-COS synchronous and asynchronous spectra also confirmed the kinetics of formic acid diluted in acetonitrile. This work provides a spectroscopic method for studying the structure of organic compounds in solution and concentration-triggering kinetics in mixtures.
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Affiliation(s)
- Yufei Han
- Hangzhou Institute of Advanced Studies, College of chemistry and life sciences, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China.
- Department of Chemistry, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Zian Wang
- Department of Chemistry, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Ru Qiao
- Hangzhou Institute of Advanced Studies, College of chemistry and life sciences, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China.
| | - Jianwen Cheng
- Hangzhou Institute of Advanced Studies, College of chemistry and life sciences, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China.
| | - Caiying Jiang
- Department of Chemistry, College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Huigang Wang
- Hangzhou Institute of Advanced Studies, College of chemistry and life sciences, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China.
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Fausto R, Ildiz GO, Nunes CM. IR-induced and tunneling reactions in cryogenic matrices: the (incomplete) story of a successful endeavor. Chem Soc Rev 2022; 51:2853-2872. [PMID: 35302145 DOI: 10.1039/d1cs01026c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this article, IR-induced and tunneling-driven reactions observed in cryogenic matrices are described in a historical perspective, the entangling of the two types of processes being highlighted. The story of this still ongoing fascinating scientific endeavor is presented here following closely our own involvement in the field for more than 30 years, and thus focuses mostly on our work. It is, because of this reason, also an incomplete story. Nevertheless, it considers a large range of examples, from very selective IR-induced conformational isomerizations to IR-induced bond-breaking/bond-forming reactions and successful observations of rare heavy atom tunneling processes. As a whole, this article provides a rather general overview of the major progress achieved in the field.
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Affiliation(s)
- Rui Fausto
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.
| | - Gulce O Ildiz
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal. .,Department of Physics, Faculty of Sciences and Letters, Istanbul Kultur University, 34158 Bakirkoy, Istanbul, Turkey
| | - Cláudio M Nunes
- CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.
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Meyer KAE, Nejad A. CC-stretched formic acid: isomerisation, dimerisation, and carboxylic acid complexation. Phys Chem Chem Phys 2021; 23:17208-17223. [PMID: 34350923 DOI: 10.1039/d1cp02700j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cis-trans-isomerism of the propiolic acid monomer (HC[triple bond, length as m-dash]C-COOH) is examined with linear Raman jet spectroscopy, yielding the first environment-free vibrational band centres of a higher-energy cis-rotamer beyond formic acid (HCOOH) in addition to all fundamentals and a large number of hot and combination/overtone bands of the trans-conformer. Two near-isoenergetic trans-fundamentals of different symmetry (CC[double bond, length as m-dash]O bend and OH torsion) prove to be a sensitive benchmarking target, as their energetic order is susceptible to the choice of electronic structure method, basis set size, and inclusion of vibrational anharmonicity. For the infrared- and Raman-active C[double bond, length as m-dash]O stretching fundamentals of the cyclic (C2h) trans-propiolic acid dimer, resonance couplings are found that in part extend to the Cs-symmetric heterodimer of trans-propiolic and trans-formic acid. Exploratory vibrational perturbation theory (VPT2) calculations show that all perturbing states involve displacements of the OH moieties located on the doubly hydrogen bonded ring. The comparison of the infrared spectra of the propiolic acid dimer and its heterodimer with formic acid to that of several other carboxylic acid dimers from the literature reveals a notable similarity regarding a non-fundamental dimer band around 1800 cm-1, which in most cases is so far unassigned. VPT2 calculations and a simple harmonic model suggest an assignment to a combination vibration of the symmetric and antisymmetric OH torsion.
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Affiliation(s)
- Katharina A E Meyer
- Institute of Physical Chemistry, University of Göttingen, Tammannstr. 6, 37077 Göttingen, Germany.
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6
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Hadjiivanov KI, Panayotov DA, Mihaylov MY, Ivanova EZ, Chakarova KK, Andonova SM, Drenchev NL. Power of Infrared and Raman Spectroscopies to Characterize Metal-Organic Frameworks and Investigate Their Interaction with Guest Molecules. Chem Rev 2020; 121:1286-1424. [DOI: 10.1021/acs.chemrev.0c00487] [Citation(s) in RCA: 150] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Dimitar A. Panayotov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Mihail Y. Mihaylov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Elena Z. Ivanova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Kristina K. Chakarova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Stanislava M. Andonova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Nikola L. Drenchev
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
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Nejad A, Suhm MA, Meyer KAE. Increasing the weights in the molecular work-out of cis- and trans-formic acid: extension of the vibrational database via deuteration. Phys Chem Chem Phys 2020; 22:25492-25501. [PMID: 33169758 DOI: 10.1039/d0cp04451b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The higher-energy cis- as well as the global minimum trans-rotamers of the four H/D isotopologues of the formic acid monomer have been examined with Raman jet spectroscopy extending the vibrational gas phase reference database by eleven new cis-band positions for HCOOD, DCOOH, and DCOOD. With these new additions, all O-H/D, C-H/D, and C[double bond, length as m-dash]O stretching as well as the O-D in-plane bending vibrations of these higher-energy rotamers are known in addition to the previously determined C-O stretch and OH torsion of cis-HCOOH. Further, a comparison of the vibrational spectra of all four H/D isotopologues of the globally stable trans-rotamer of formic acid is shown to be very helpful in revealing similarities and differences in these systems, particularly with regard to Fermi resonances. Amongst the most prominent ones is the ν5/2ν9 resonance doublet of trans-HCOOH, for which we provide more insight into a recently suggested label switch of the resonance partners via the comparison of infrared and Raman jet spectra.
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Affiliation(s)
- Arman Nejad
- Institute of Physical Chemistry, University of Göttingen, Tammannstr. 6, 37077 Göttingen, Germany.
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8
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Meyer KAE, Davies JA, Ellis AM. Shifting formic acid dimers into perspective: vibrational scrutiny in helium nanodroplets. Phys Chem Chem Phys 2020; 22:9637-9646. [DOI: 10.1039/d0cp01060j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A metastable dimer of formic acid has been prepared inside superfluid helium nanodroplets and examined using IR spectroscopy and quantum chemical calculations.
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Affiliation(s)
- Katharina A. E. Meyer
- Institut für Physikalische Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
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Abstract
AbstractFormic acid dimer as the prototypical doubly hydrogen-bonded gas-phase species is discussed from the perspective of the three translational and the three rotational degrees of freedom which are lost when two formic acid molecules form a stable complex. The experimental characterisation of these strongly hindered translations and rotations is reviewed, as are attempts to describe the associated fundamental vibrations, their combinations, and their thermal shifts by different electronic structure calculations and vibrational models. A remarkable match is confirmed for the combination of a CCSD(T)-level harmonic treatment and an MP2-level anharmonic VPT2 correction. Qualitatively correct thermal shifts of the vibrational spectra can be obtained from classical molecular dynamics in CCSD(T)-quality force fields. A detailed analysis suggests that this agreement between experiment and composite theoretical treatment is not strongly affected by fortuitous error cancellation but fully converged variational treatments of the six pair or intermolecular modes and their overtones and combinations in this model system would be welcome.
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10
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Ito F. Modeling and spectral simulation of formic acid dimer in Ar matrix using ONIOM calculations. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Meyer KAE, Suhm MA. Stretching of cis-formic acid: warm-up and cool-down as molecular work-out. Chem Sci 2019; 10:6285-6294. [PMID: 31341581 PMCID: PMC6598513 DOI: 10.1039/c9sc01555h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 05/15/2019] [Indexed: 01/17/2023] Open
Abstract
A new technique to rotationally simplify and Raman-probe conformationally and vibrationally excited small molecules is applied to the cis-trans isomerism of formic acid. It quintuples the previously available gas phase vibrational data base on this excited form of a strongly anharmonic planar molecule despite its limited spectral resolution. The newly determined cis-formic acid fundamentals allow for a balanced vibrational benchmark on both rotamers of formic acid. Assuming the adequacy of vibrational perturbation theory, it reveals weaknesses of standard methods for these systems like B3LYP-D3(BJ)/aVQZ VPT2 or PBE0-D3(BJ)/aVQZ VPT2. The functionals ωB97-XD and M06-2X additionally suffer from severe integration grid size and symmetry dependencies. The vibrational benchmark suggests B2PLYP-D3(BJ)/aVQZ VPT2 and MP2/aVQZ VPT2 as partially competitive and in any case efficient alternatives to computationally demanding coupled cluster vibrational configuration interaction calculations. Whether this is due to fortuitous compensation between electronic structure and vibrational perturbation error remains to be explored.
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Affiliation(s)
- Katharina A E Meyer
- Institut für Physikalische Chemie , Georg-August-Universität Göttingen , Tammannstr. 6 , 37077 Göttingen , Germany . ; ; Tel: +49 55139 33111
| | - Martin A Suhm
- Institut für Physikalische Chemie , Georg-August-Universität Göttingen , Tammannstr. 6 , 37077 Göttingen , Germany . ; ; Tel: +49 55139 33111
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Malaganvi SS, Tonannavar (Yenagi) J, Tonannavar J. Experimental, DFT dimeric modeling and AIM study of H-bond-mediated composite vibrational structure of Chelidonic acid. Heliyon 2019; 5:e01586. [PMID: 31193235 PMCID: PMC6522660 DOI: 10.1016/j.heliyon.2019.e01586] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 03/28/2019] [Accepted: 04/24/2019] [Indexed: 12/12/2022] Open
Abstract
The composite vibrational structure near 3650–3200 and 3000–2400 cm−1 in the observed IR absorption spectrum of Chelidonic acid has been explained in terms of intra- and inter-molecular −O−H∙∙∙O H-bonding attributed to monomer and dimer species computed at B3LYP/6–311++G(d,p) level. Three of the six dimer species derived out of ten monomeric components have shown both intra- and inter-molecular H-bonding. Vibrational modes of the monomer and dimer species are satisfactorily identified with the observed IR and Raman bands including frequency shifts associated with the H-bondings. The H-bond interactions in the monomer and dimer species have been characterized in terms of electron density, ρ(r), its Laplacian, ∇2ρ(r) and potential energy density at the O∙∙∙H bond critical points (BCPs) based on the Atoms in Molecules (AIM) theory. The attractive (van der Waals, H-bonds) and repulsive steric clash (SC) interactions are explained using computed reduced density gradient values from the noncovalent interaction (NCI) method. The AIM analysis confirms the presence of the intra- and inter-molecular H-bondings in the monomer/dimer species. The natural bond orbital (NBO) analysis of the natural charges and stabilization energy of the H-bonds for the dimer species further points to the stronger inter-than intra-molecular H-bonding.
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Ahokas JM, Kosendiak I, Krupa J, Wierzejewska M, Lundell J. Raman spectroscopy of glycolic acid complexes with N2. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.01.080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Houston PL, Van Hoozen BL, Qu C, Yu Q, Bowman JM. Teaching vibrational spectra to assign themselves. Faraday Discuss 2018; 212:65-82. [PMID: 30259026 DOI: 10.1039/c8fd00075a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new paradigm for assigning vibrational spectra is described. Instead of proceeding from potential to Hamiltonian to eigenvalues/eigenvectors/intensities to spectrum, the new method goes "backwards" directly from spectrum to eigenvectors. The eigenvectors then "assign" the spectrum, in that they identify the basis states that contribute to each eigenvalue. To start, we demonstrate an algorithm that can obtain useful estimates of the eigenvectors connecting a real, symmetric Hamiltonian to its eigenvalues even if the only available information about the Hamiltonian is its diagonal elements. When this algorithm is augmented with information about transition intensities, it can be used to assign a complex vibrational spectrum using only information about (1) eigenvalues (the peak centers of the spectrum) and (2) a harmonic basis set (taken to be the diagonal elements of the Hamiltonian). Examples will be discussed, including application to the vibrationally complex spectral region of the formic acid dimer.
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Affiliation(s)
- Paul L Houston
- Department of Chemistry and Chemical Biology, Cornell Universtiy, Ithaca, NY 14853, USA. and School of Chemistry and Biochemistry, Georgia Inst. of Technology, Atlanta, GA 30332-0400, USA
| | - Brian L Van Hoozen
- Department of Chemistry, Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Chen Qu
- Department of Chemistry, Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Qi Yu
- Department of Chemistry, Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Joel M Bowman
- Department of Chemistry, Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
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Affiliation(s)
- Susy Lopes
- CQC, Department of Chemistry, University of Coimbra Coimbra, Portugal
| | - Rui Fausto
- CQC, Department of Chemistry, University of Coimbra Coimbra, Portugal
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Meyer KAE, Suhm MA. Vibrational exciton coupling in homo and hetero dimers of carboxylic acids studied by linear infrared and Raman jet spectroscopy. J Chem Phys 2018; 149:104307. [DOI: 10.1063/1.5043400] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Katharina A. E. Meyer
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
| | - Martin A. Suhm
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
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17
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Ahokas J, Kosendiak I, Krupa J, Lundell J, Wierzejewska M. FTIR matrix isolation and theoretical studies of glycolic acid dimers. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Qu C, Bowman JM. High-dimensional fitting of sparse datasets of CCSD(T) electronic energies and MP2 dipole moments, illustrated for the formic acid dimer and its complex IR spectrum. J Chem Phys 2018; 148:241713. [DOI: 10.1063/1.5017495] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Chen Qu
- Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA
| | - Joel M. Bowman
- Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA
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Lopes S, Fausto R, Khriachtchev L. Formic acid dimers in a nitrogen matrix. J Chem Phys 2018; 148:034301. [PMID: 29352788 DOI: 10.1063/1.5010417] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Formic acid (HCOOH) dimers are studied by infrared spectroscopy in a nitrogen matrix and by ab initio calculations. We benefit from the use of a nitrogen matrix where the lifetime of the higher-energy (cis) conformer is very long (∼11 h vs. 7 min in an argon matrix). As a result, in a nitrogen matrix, a large proportion of the cis conformer can be produced by vibrational excitation of the lower-energy (trans) conformer. Three trans-trans, four trans-cis, and three cis-cis dimers are found in the experiments. The spectroscopic information on most of these dimers is enriched compared to the previous studies in an argon matrix. The cis-cis dimers of ordinary formic acid (without deuteration) are reported here for the first time. Several conformational processes are obtained using selective excitation by infrared light, some of them also for the first time. In particular, we report on the formation of cis-cis dimers upon vibrational excitation of trans-cis dimers. Tunneling decays of several dimers have been detected in the dark. The tunneling decay of cis-cis dimers of formic acid as well as the stabilization of cis units in cis-cis dimers is also observed for the first time.
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Affiliation(s)
- Susy Lopes
- Department of Chemistry, University of Coimbra, Rua Larga, P-3004-535 Coimbra, Portugal
| | - Rui Fausto
- Department of Chemistry, University of Coimbra, Rua Larga, P-3004-535 Coimbra, Portugal
| | - Leonid Khriachtchev
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
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Oswald S, Meyer E, Suhm MA. Dinitrogen as a Sensor for Metastable Carboxylic Acid Dimers and a Weak Hydrogen Bond Benchmarking Tool. J Phys Chem A 2018. [DOI: 10.1021/acs.jpca.8b00334] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sönke Oswald
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
| | - Enno Meyer
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
| | - Martin A. Suhm
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
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Meyer KAE, Suhm MA. Formic acid aggregation in 2D supersonic expansions probed by FTIR imaging. J Chem Phys 2017; 147:144305. [DOI: 10.1063/1.4989544] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Katharina A. E. Meyer
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
| | - Martin A. Suhm
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
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22
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Asfin RE, Kolomiitsova TD, Shchepkin DN, Tokhadze KG. Infrared Studies of the Symmetry Changes of the 28SiH 4 Molecule in Low-Temperature Matrixes. Fundamental, Combination, and Overtone Transitions. J Phys Chem A 2017. [PMID: 28629214 DOI: 10.1021/acs.jpca.7b02798] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Infrared spectra of 28SiH4 in argon and nitrogen matrixes at low temperature 6.5-20 K in the region of overtone and combination transitions were recorded for the first time. Additionally, the high-resolution spectra were obtained in the fundamental region. The frequencies and the relative intensities of all bands were determined. The set of experimental data suggests that the symmetry of molecules studied in the matrixes is different from the symmetry of the free molecules because of an interaction with the environment. The symmetry of 28SiH4 changes from Td to C3v on transition from the gas phase to a nitrogen matrix and to D2d on transition to an argon matrix. A modeling of SiH4 molecule force fields explains the experimental data as a change of a force constant of the selected SiH bond in the case of SiH4 in the nitrogen matrix or force constants of two opposite angles in the case of SiH4 in the argon matrix. In spite of small values of these changes, they result in noticeable spectroscopic effects: the band splitting and appearance of new bands in matrix spectra compared with spectra of free SiH4. The interpretation of transitions in the fundamental and combination regions was performed.
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Affiliation(s)
- Ruslan E Asfin
- Physical Faculty, St. Petersburg State University , 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia
| | - Tatjana D Kolomiitsova
- Physical Faculty, St. Petersburg State University , 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia
| | - Dmitrii N Shchepkin
- Physical Faculty, St. Petersburg State University , 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia
| | - Konstantin G Tokhadze
- Physical Faculty, St. Petersburg State University , 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia
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23
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24
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Tew DP, Mizukami W. Ab Initio Vibrational Spectroscopy of cis- and trans-Formic Acid from a Global Potential Energy Surface. J Phys Chem A 2016; 120:9815-9828. [DOI: 10.1021/acs.jpca.6b09952] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David P. Tew
- School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
| | - Wataru Mizukami
- School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
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25
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Qu C, Bowman JM. An ab initio potential energy surface for the formic acid dimer: zero-point energy, selected anharmonic fundamental energies, and ground-state tunneling splitting calculated in relaxed 1–4-mode subspaces. Phys Chem Chem Phys 2016; 18:24835-24840. [DOI: 10.1039/c6cp03073d] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a full-dimensional, permutationally invariant potential energy surface (PES) for the cyclic formic acid dimer.
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Affiliation(s)
- Chen Qu
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation
- Emory University
- Atlanta
- USA
| | - Joel M. Bowman
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation
- Emory University
- Atlanta
- USA
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26
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27
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Khriachtchev L. Matrix-isolation studies of noncovalent interactions: more sophisticated approaches. J Phys Chem A 2015; 119:2735-46. [PMID: 25679775 DOI: 10.1021/jp512005h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Noncovalent interactions are crucial for many physical, chemical, and biological phenomena. Matrix isolation is a powerful method to study noncovalent interactions, including hydrogen-bonded species, and it has been extensively used in this field. However, there are difficult situations, such as in the case of species that are impossible to prepare in the gas phase. In this article, we describe some advanced approaches allowing studies of complexes that are problematic for the traditional methods. Photolysis of a suitable precursor in a matrix can lead to a large concentration of 1:1 complexes, which are otherwise very difficult to prepare (e.g., the H2O···O complex). Photolysis of species combined with annealing can lead to complexes of molecules with mobile atoms (e.g., the same H2O···O complex). Simultaneous photolysis of two species combined with annealing can produce complexes of radicals via reactions of the photogenerated complexes with mobile atoms (e.g., the H2O···HCO complex). Interaction of noble-gas (Ng) hydrides with other species is another topic (e.g., the N2···HArF complex) and very large blue shifts of the H-Ng stretching modes are normally observed for these systems. Complexes and dimers of the higher-energy conformer of formic acid have been prepared by using selective vibrational excitation of the ground-state conformer. The higher-energy conformer of formic acid can be efficiently stabilized in the complexes with strong hydrogen bonding. We also consider some problematic cases when the changes in the vibrational frequencies of the 1:1 complexes are very small (e.g., the phenol···Xe complex) and when the complex formation is prevented by strong solvation in the matrix (e.g., species in solid xenon).
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Affiliation(s)
- Leonid Khriachtchev
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
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28
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Tarakanova EG, Yukhnevich GV. Structure of molecular complexes formed in aqueous solutions of trifluoroacetic acid. J STRUCT CHEM+ 2015. [DOI: 10.1134/s0022476614080058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Fornaro T, Biczysko M, Monti S, Barone V. Dispersion corrected DFT approaches for anharmonic vibrational frequency calculations: nucleobases and their dimers. Phys Chem Chem Phys 2014; 16:10112-28. [PMID: 24531740 PMCID: PMC4612423 DOI: 10.1039/c3cp54724h] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Computational spectroscopy techniques have become in the last few years an effective means to analyze and assign infrared (IR) spectra of molecular systems of increasing dimensions and in different environments. However, transition from compilation of harmonic data to fully anharmonic simulations of spectra is still underway. The most promising results for large systems have been obtained, in our opinion, by perturbative vibrational approaches based on potential energy surfaces computed by hybrid (especially B3LYP) density functionals and medium size (e.g. SNSD) basis sets. In this framework, we are actively developing a comprehensive and robust computational protocol aimed at quantitative reproduction of the spectra of nucleic acid base complexes and their adsorption on solid supports (organic/inorganic). In this contribution we report the essential results of the first step devoted to isolated monomers and dimers. It is well known that in order to model the vibrational spectra of weakly bound molecular complexes dispersion interactions should be taken into proper account. In this work we have chosen two popular and inexpensive approaches to model dispersion interactions, namely the semi-empirical dispersion correction (D3) and pseudopotential based (DCP) methodologies both in conjunction with the B3LYP functional. These have been used for simulating fully anharmonic IR spectra of nucleobases and their dimers through generalized second order vibrational perturbation theory (GVPT2). We have studied, in particular, isolated adenine, hypoxanthine, uracil, thymine and cytosine, the hydrogen-bonded and stacked adenine and uracil dimers, and the stacked adenine-naphthalene heterodimer. Anharmonic frequencies are compared with standard B3LYP results and experimental findings, while the computed interaction energies and structures of complexes are compared to the best available theoretical estimates.
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Affiliation(s)
- Teresa Fornaro
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy.
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30
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Adsorption behaviors of monomer and dimer of formic acid on Pt (111) in the absence and presence of water. J Mol Model 2014; 20:2264. [DOI: 10.1007/s00894-014-2264-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Accepted: 04/23/2014] [Indexed: 10/25/2022]
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31
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Kalescky R, Kraka E, Cremer D. Accurate determination of the binding energy of the formic acid dimer: The importance of geometry relaxation. J Chem Phys 2014; 140:084315. [DOI: 10.1063/1.4866696] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Barone V, Biczysko M, Bloino J. Fully anharmonic IR and Raman spectra of medium-size molecular systems: accuracy and interpretation. Phys Chem Chem Phys 2014; 16:1759-87. [PMID: 24346191 PMCID: PMC4604664 DOI: 10.1039/c3cp53413h] [Citation(s) in RCA: 295] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Computation of full infrared (IR) and Raman spectra (including absolute intensities and transition energies) for medium- and large-sized molecular systems beyond the harmonic approximation is one of the most interesting challenges of contemporary computational chemistry. Contrary to common beliefs, low-order perturbation theory is able to deliver results of high accuracy (actually often better than those issuing from current direct dynamics approaches) provided that anharmonic resonances are properly managed. This perspective sketches the recent developments in our research group toward the development of a robust and user-friendly virtual spectrometer rooted in second-order vibrational perturbation theory (VPT2) and usable also by non-specialists essentially as a black-box procedure. Several examples are explicitly worked out in order to illustrate the features of our computational tool together with the most important ongoing developments.
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Affiliation(s)
- Vincenzo Barone
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy.
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33
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Zins EL, Krim L. Photochemistry of a 1 : 1 hydrogen-bonded CH3CN : HCOOH complex under astrochemically-relevant conditions. Phys Chem Chem Phys 2014; 16:3388-98. [DOI: 10.1039/c3cp54041c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Kalescky R, Kraka E, Cremer D. Local vibrational modes of the formic acid dimer – the strength of the double hydrogen bond. Mol Phys 2013. [DOI: 10.1080/00268976.2013.796070] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- R. Kalescky
- a Department of Chemistry , Southern Methodist University , 3215 Daniel Avenue, Dallas , Texas , 75275 , USA
| | - E. Kraka
- a Department of Chemistry , Southern Methodist University , 3215 Daniel Avenue, Dallas , Texas , 75275 , USA
| | - D. Cremer
- a Department of Chemistry , Southern Methodist University , 3215 Daniel Avenue, Dallas , Texas , 75275 , USA
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35
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Olbert-Majkut A, Ahokas J, Pettersson M, Lundell J. Visible Light-Driven Chemistry of Oxalic Acid in Solid Argon, Probed by Raman Spectroscopy. J Phys Chem A 2013; 117:1492-502. [DOI: 10.1021/jp311749z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adriana Olbert-Majkut
- Faculty of Chemistry, Wrocław University, F. Joliot-Curie 14, 50-383
Wrocław, Poland
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36
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Cato, Jr. MA, Majumdar D, Roszak S, Leszczynski J. Exploring Relative Thermodynamic Stabilities of Formic Acid and Formamide Dimers – Role of Low-Frequency Hydrogen-Bond Vibrations. J Chem Theory Comput 2013; 9:1016-26. [DOI: 10.1021/ct300889b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael A. Cato, Jr.
- Interdisciplinary Center for Nanotoxicity, Jackson State University, Jackson, Mississippi 39217, United States
| | - D. Majumdar
- Interdisciplinary Center for Nanotoxicity, Jackson State University, Jackson, Mississippi 39217, United States
| | - Szczepan Roszak
- Institute of Physical and Theoretical
Chemistry, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Jerzy Leszczynski
- Interdisciplinary Center for Nanotoxicity, Jackson State University, Jackson, Mississippi 39217, United States
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37
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Lindgren J, Olbert-Majkut A, Pettersson M, Kiljunen T. Raman spectroscopy and crystal-field split rotational states of photoproducts CO and H2 after dissociation of formaldehyde in solid argon. J Chem Phys 2012; 137:164310. [DOI: 10.1063/1.4762866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Cao Q, Melavuori M, Lundell J, Räsänen M, Khriachtchev L. Matrix-isolation and ab initio study of the complex between formic acid and xenon. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.05.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Hazra MK, Francisco JS, Sinha A. Computational study of hydrogen-bonded complexes of HOCO with acids: HOCO⋯HCOOH, HOCO⋯H2SO4, and HOCO⋯H2CO3. J Chem Phys 2012; 137:064319. [DOI: 10.1063/1.4742817] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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40
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Rudolph WW, Irmer G. Raman spectroscopic studies and DFT calculations on tribromoacetic acid and tribromoacetic acid-d. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 90:165-172. [PMID: 22343076 DOI: 10.1016/j.saa.2012.01.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Revised: 01/12/2012] [Accepted: 01/16/2012] [Indexed: 05/31/2023]
Abstract
The Raman spectra of crystalline tribromoacetic acid (CBr(3)COOH), its deuterated analog (CBr(3)COOD) and a partially deuterated acid (CBr(3)COOD/H) have been measured using Raman spectroscopy. Density functional theory (DFT) calculations have been carried out in order to compare the measured spectra with the calculated ones and the bands have been assigned. The theoretical frequencies are close to the ones of the cyclic dimer in the crystal and this fact implies the "oriented gas" model for this compound. The three Raman active intermonomeric modes have been assigned. An extremely weak and broad (~500 cm(-1)) νOH band for (CBr(3)COOH)(2) centred at ~3000 cm(-1) could be detected. In addition, this band shows relatively sharp submaxima, irregularly spaced, assigned to overtones/summation bands of the COOH group. For the deuterated analog, (CBr(3)COOD)(2) the OD stretching band is centred at ~2230cm(-1) and shows sharp submaxima as well. In the solid state the tribromoacetic acid consists of dimers while in aqueous solutions the tribromoacetic acid is in monomeric form.
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Affiliation(s)
- Wolfram W Rudolph
- Medizinische Fakultät der TU Dresden, Institut für Virologie im MTZ, Dresden, Germany.
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41
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Marushkevich K, Khriachtchev L, Räsänen M, Melavuori M, Lundell J. Dimers of the Higher-Energy Conformer of Formic Acid: Experimental Observation. J Phys Chem A 2012; 116:2101-8. [DOI: 10.1021/jp209714e] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Leonid Khriachtchev
- Department of Chemistry, University of Helsinki, P.O. Box 55,
FIN-00014 Finland
| | - Markku Räsänen
- Department of Chemistry, University of Helsinki, P.O. Box 55,
FIN-00014 Finland
| | - Mia Melavuori
- Department of Chemistry, University of Helsinki, P.O. Box 55,
FIN-00014 Finland
| | - Jan Lundell
- Department of Chemistry, University of Jyväskylä, PL 35, FIN-40014 Finland
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42
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Martinelli A, Nordstierna L. An investigation of the sol–gel process in ionic liquid–silica gels by time resolved Raman and 1H NMR spectroscopy. Phys Chem Chem Phys 2012; 14:13216-23. [DOI: 10.1039/c2cp41914a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Ito F. Modeling and spectral simulation of matrix-isolated molecules by density functional calculations: A case study on formic acid dimer. J Chem Phys 2010; 133:214502. [DOI: 10.1063/1.3507869] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Xue Z, Suhm MA. Adding more weight to a molecular recognition unit: the low-frequency modes of carboxylic acid dimers. Mol Phys 2010. [DOI: 10.1080/00268976.2010.508600] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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45
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Paulson LO, Kaminský J, Anderson DT, Bouř P, Kubelka J. Theoretical Study of Vibrationally Averaged Dipole Moments for the Ground and Excited C═O Stretching States of trans-Formic Acid. J Chem Theory Comput 2010; 6:817-27. [PMID: 26613309 DOI: 10.1021/ct900608t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Recent experimental studies of trans-formic acid (FA) in solid para-hydrogen (pH2) highlighted the importance of vibrationally averaged dipole moments for the interpretation of the high-resolution infrared (IR) spectra, in particular for the C═O stretch (ν3) mode. In this report, dipole moments for the ν3 ground (v = 0) and excited (v = 1, 2, 3, and 4) anharmonic vibrational states in trans-FA are investigated using two different approaches: a single mode approximation, where the vibrational states are obtained from the solution of the one-dimensional Schrödinger equation for the harmonic normal coordinate, and a limited vibrational configuration interaction (VCI) approximation. Density functional theory (B3LYP, BPW91) and correlated ab initio (MP2 and CCSD(T)) electronic methods were employed with a number of double- and triple-ζ and correlation consistent basis sets. Both single mode and VCI approaches show comparable agreement with experimental data, which is more dependent on the level of theory used. In particular, the BPW91/cc-pVDZ level appears to perform remarkably well. Effects of solvation of FA in solid state Ar and pH2 matrices were simulated at the BPW91/cc-pVDZ level using a conductor-like polarized continuum model (CPCM). The Ar and pH2 solid-state matrices cause quite a substantial increase in the FA dipole moments. Compared to gas-phase calculations, the CPCM model for pH2 better reproduces the experimental FA spectral shifts caused by interaction with traces of ortho-hydrogen (oH2) species in solid pH2. The validity of the single mode approach is tested against the multidimensional VCI results, suggesting that the isolated (noninteracting) mode approximation is valid up to the third vibrationally excited state (v = 3). Finally, the contribution of the ground anharmonic vibrational states of the remaining modes to the resulting ν3 single mode dipole moments is examined and discussed.
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Affiliation(s)
- Leif O Paulson
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, and Institute for Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague, Czech Republic
| | - Jakub Kaminský
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, and Institute for Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague, Czech Republic
| | - David T Anderson
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, and Institute for Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague, Czech Republic
| | - Petr Bouř
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, and Institute for Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague, Czech Republic
| | - Jan Kubelka
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, and Institute for Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague, Czech Republic
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46
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Marushkevich K, Khriachtchev L, Lundell J, Domanskaya A, Räsänen M. Matrix Isolation and Ab Initio Study of Trans−Trans and Trans−Cis Dimers of Formic Acid. J Phys Chem A 2010; 114:3495-502. [DOI: 10.1021/jp911515f] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kseniya Marushkevich
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland, and Department of Chemistry, University of Jyväskylä, PL 35, FIN-40014 Jyväskylä, Finland
| | - Leonid Khriachtchev
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland, and Department of Chemistry, University of Jyväskylä, PL 35, FIN-40014 Jyväskylä, Finland
| | - Jan Lundell
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland, and Department of Chemistry, University of Jyväskylä, PL 35, FIN-40014 Jyväskylä, Finland
| | - Alexandra Domanskaya
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland, and Department of Chemistry, University of Jyväskylä, PL 35, FIN-40014 Jyväskylä, Finland
| | - Markku Räsänen
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland, and Department of Chemistry, University of Jyväskylä, PL 35, FIN-40014 Jyväskylä, Finland
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47
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Olbert-Majkut A, Ahokas J, Lundell J, Pettersson M. Photolysis of HCOOH monomer and dimer in solid argon: Raman characterization of in situ formed molecular complexes. Phys Chem Chem Phys 2010; 12:7138-47. [DOI: 10.1039/b926658e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Xue Z, Suhm MA. Probing the stiffness of the simplest double hydrogen bond: The symmetric hydrogen bond modes of jet-cooled formic acid dimer. J Chem Phys 2009; 131:054301. [DOI: 10.1063/1.3191728] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Z. Xue
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
| | - M. A. Suhm
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
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