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Nejad A, Li X, Zhu T, Liu Y, Duan C. Mid-infrared Laser Spectroscopy of Jet-Cooled Formic Acid Trimer: Mode-Dependent Line Broadening in the C-O Stretching Region. J Phys Chem Lett 2023; 14:7795-7801. [PMID: 37616473 PMCID: PMC10786437 DOI: 10.1021/acs.jpclett.3c01860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023]
Abstract
Building on recent progress in the vibrational spectroscopy of the formic acid trimer, we present the first high-resolution measurements of the jet-cooled laser absorption spectrum of (HCOOH)3. The spectra of the lowest- and highest-frequency C-O stretching fundamentals are analyzed whereas the third band is not observed, complicated by monomer and dimer absorptions at 1219 cm-1 (8.2 μm). Vibration-rotation parameters are obtained for the band at 1172.31512(68) cm-1 whereas the C-O stretch at 1246.33(5) cm-1 exhibits a significantly larger breadth, allowing only resolution of the coarse PQR structure. Vibrational predissociation can be ruled out, and intramolecular vibrational redistribution mechanisms are discussed, particularly coupling to the concerted proton exchange within the cyclic dimer subunit. Ultimately, the question remains open. The prospects of high-resolution measurements of other trimer bands or isotope substitution experiments, which might assist in revealing the mode-specificity of the underlying broadening mechanisms, are discussed.
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Affiliation(s)
- Arman Nejad
- Institute
of Physical Chemistry, Georg-August University
of Göttingen, Tammannstraße 6, Göttingen 37077, Germany
| | - Xiang Li
- College
of Physical Science and Technology, Central
China Normal University, Wuhan 430079, China
| | - Tianxin Zhu
- College
of Physical Science and Technology, Central
China Normal University, Wuhan 430079, China
| | - Yun Liu
- College
of Physical Science and Technology, Central
China Normal University, Wuhan 430079, China
| | - Chuanxi Duan
- College
of Physical Science and Technology, Central
China Normal University, Wuhan 430079, China
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2
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Nejad A, Meyer KAE, Kollipost F, Xue Z, Suhm MA. Slow monomer vibrations in formic acid dimer: Stepping up the ladder with FTIR and Raman jet spectroscopy. J Chem Phys 2021; 155:224301. [PMID: 34911308 DOI: 10.1063/5.0075272] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
In an effort to extend the cold gas phase spectroscopic database of the cyclic formic acid dimer (FAD), we present and analyze the jet-cooled vibrational infrared and Raman spectrum of (HCOOH)2 in the monomer fingerprint region between 600 and 1500 cm-1. The present study bridges the gap between the intermolecular dimerization-induced and the carbonyl stretching fundamentals that have already been reexamined using jet-cooled or high-resolution spectroscopy. This completes the characterization of the jet-cooled vibrational (HCOOH)2 spectrum below the complex OH (CH) stretching fundamentals, and we report resonance-induced FAD combination/overtone transitions that will serve as a valuable reference for a theoretical modeling of its vibrational dynamics. As a by-product, several new formic acid trimer fundamentals are identified in the jet spectra and assigned with the help of second-order vibrational perturbation theory (VPT2). The polar formic acid dimer still eludes detection in a supersonic jet, but we are able to estimate an experimental upper-bound of the polar dimer-to-trimer-to-cyclic dimer intensity ratio to about 1:10:100 under typical expansion conditions. Using VPT2 with resonance treatment (VPT2+K), we reinvestigate the notorious ν22 resonance triad. Generally, we find that VPT2, which is, of course, inadequate for modeling the resonance-rich OH stretching spectrum of FAD, is performing very satisfactorily in predicting fundamental and two-quantum state term values for the slower modes below 1500 cm-1. As these modes are the building blocks for the ultrafast energy dissipation in the OH stretching region, the present work opens the door for its quantitative understanding.
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Affiliation(s)
- Arman Nejad
- Institute of Physical Chemistry, Georg August University of Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
| | - Katharina A E Meyer
- Institute of Physical Chemistry, Georg August University of Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
| | - Franz Kollipost
- Institute of Physical Chemistry, Georg August University of Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
| | - Zhifeng Xue
- Institute of Physical Chemistry, Georg August University of Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
| | - Martin A Suhm
- Institute of Physical Chemistry, Georg August University of Göttingen, Tammannstraße 6, 37077 Göttingen, Germany
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3
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Tenorio BNC, Nascimento MAC, Rocha AB. Theoretical study of the absolute inner-shell photoionization cross sections of the formic acid and some of its hydrogen-bonded clusters. J Chem Phys 2019; 150:154308. [PMID: 31005109 DOI: 10.1063/1.5088491] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Inner-shell absolute photoabsorption and photoionization cross sections of the formic acid, HCOOH, and its small hydrogen-bonded clusters, i.e., (HCOOH)2, HCOOH2 +, HCOHOH+, and HCOOH·H3O+, were calculated at the time-dependent density functional theory (TDDFT) level, and the results were used to analyze the effect of the formic acid clustering on the carbon and oxygen K-edge photoionization cross sections. The discrete electronic pseudospectra obtained with square-integrable (L2) basis set calculations were used in an analytic continuation procedure based on continued fraction functions to obtain the photoabsorption cross sections. Symmetry adapted cluster configuration interaction calculations on the small formic acid clusters have also been performed at the oxygen K-edge to assign the discrete transitions and ionization potentials in support to the TDDFT results.
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Affiliation(s)
- Bruno Nunes Cabral Tenorio
- Instituto de Química, Universidade Federal do Rio de Janeiro, UFRJ, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
| | - Marco Antonio Chaer Nascimento
- Instituto de Química, Universidade Federal do Rio de Janeiro, UFRJ, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
| | - Alexandre Braga Rocha
- Instituto de Química, Universidade Federal do Rio de Janeiro, UFRJ, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
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4
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Chen Z, Martirez JMP, Zahl P, Carter EA, Koel BE. Self-assembling of formic acid on the partially oxidizedp(2 × 1) Cu(110) surface reconstruction at low coverages. J Chem Phys 2019; 150:041720. [DOI: 10.1063/1.5046697] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Zhu Chen
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544-5263, USA
| | - John Mark P. Martirez
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544-5263, USA
| | - Percy Zahl
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - Emily A. Carter
- School of Engineering and Applied Science, Princeton University, Princeton, New Jersey 08544-5263, USA
| | - Bruce E. Koel
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544-5263, USA
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5
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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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7
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Cui L, Miao X, Xu L, Hu Y, Deng W. Self-assembly polymorphism of 2,7-bis-nonyloxy-9-fluorenone: solvent induced the diversity of intermolecular dipole–dipole interactions. Phys Chem Chem Phys 2015; 17:3627-36. [DOI: 10.1039/c4cp04773g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dielectric variance of homologous acids induced different coadsorption behaviors. Intermolecular dipolar interaction stabilized the arrangements of fluorenone moieties.
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Affiliation(s)
- Lihua Cui
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Xinrui Miao
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Li Xu
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Yi Hu
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Wenli Deng
- College of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
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8
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McCarthy SP, Roy AK, Kazachenko S, Thakkar AJ. A dispersion-corrected density functional theory study of hexamers of formic acid. CAN J CHEM 2013. [DOI: 10.1139/cjc-2012-0507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Density functional theory with dispersion-correcting effective potentials is used to examine the low-lying isomers of the formic acid hexamer. The lowest-energy structure is a chairlike ring of six Z monomers. π-Stacked structures consisting of a dimer and tetramer lie higher in energy.
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Affiliation(s)
- Shane P. McCarthy
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Amlan K. Roy
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Sergey Kazachenko
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Ajit J. Thakkar
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
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9
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Thakkar AJ. Small clusters of formic acid: Tests and applications of density functional theory with dispersion-correcting potentials. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.01.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Yoo EJH, Feketeová L, Khairallah GN, O’Hair RAJ. Unimolecular Chemistry of Doubly Protonated Zwitterionic Clusters. J Phys Chem A 2011; 115:4179-85. [DOI: 10.1021/jp200921w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ellie Jung-Hwa Yoo
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, 30 Flemington Road, Victoria 3010, Australia
| | - Linda Feketeová
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, 30 Flemington Road, Victoria 3010, Australia
| | - George N. Khairallah
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, 30 Flemington Road, Victoria 3010, Australia
| | - Richard A. J. O’Hair
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, 30 Flemington Road, Victoria 3010, Australia
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11
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Arabi AA, Matta CF. Effects of external electric fields on double proton transfer kinetics in the formic acid dimer. Phys Chem Chem Phys 2011; 13:13738-48. [DOI: 10.1039/c1cp20175a] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Baptista L, Andrade DPP, Rocha AB, Rocco MLM, Boechat-Roberty HM, da Silveira EF. Theoretical investigation on the stability of negatively charged formic acid clusters. J Phys Chem A 2010; 114:6917-26. [PMID: 20540546 DOI: 10.1021/jp100425h] [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 results on negatively charged formic acid clusters generated by the impact of (252)Cf fission fragments on icy formic acid target are compared to quantum mechanical calculations. Structures for the clusters series, (HCOOH)nOH(-), where 2 < or = n < or = 4, are proposed based on ab initio electronic structure methods. The results show that cluster growth does not have a regular pattern of nucleation. A stability analysis was performed considering the commonly defined stability function. Temporal behavior of the clusters was evaluated by Born-Oppenheimer molecular dynamics to check the mechanism that provides cluster stability. The evaluated temporal profiles indicate the importance of hydrogen atom migration between the formic acid moieties in maintaining the stability of the structures and the water formation due to hydrogen abstraction by the hydroxyl approach.
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Affiliation(s)
- Leonardo Baptista
- Universidade Estadual do Rio de Janeiro, Faculdade de Tecnologia, Departamento de Quimica e Ambiental, Rodovia Presidente Dutra Km 298, Resende, RJ, Brazil.
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13
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Nordstrom CM, McGrath AJ, Thakkar AJ. Microsolvation of the formic acid dimer — (HCOOH)2(H2O)n clusters with n = 1, . . ., 5. CAN J CHEM 2010. [DOI: 10.1139/v10-024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Density functional theory and spin-component-scaled Møller–Plesset perturbation theory calculations are used to examine the microsolvation of the formic acid dimer. The lowest energy structures with n water molecules consist of a n-water cluster, not necessarily of lowest energy, with two formic acid molecules attached to its surface by hydrogen bonds. The total number of hydrogen bonds does not correlate directly with relative stability.
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Affiliation(s)
- Cara M. Nordstrom
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Alaina J. McGrath
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Ajit J. Thakkar
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
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14
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Mejía SM, Espinal JF, Mondragón F. Cooperative effects on the structure and stability of (ethanol)3–water, (methanol)3–water heterotetramers and (ethanol)4, (methanol)4 tetramers. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2009.01.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Baptista L, Andrade DPP, Rocha AB, Rocco MLM, Boechat-Roberty HM, da Silveira EF, da Silva EC, Arbilla G. Theoretical investigation on the stability of ionic formic acid clusters. J Phys Chem A 2009; 112:13382-92. [PMID: 19053548 DOI: 10.1021/jp807792s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Recent experimental results on positive charged formic acid clusters generated by the impact of (252)Cf fission fragments (FF) on icy formic acid target are examined in this paper by quantum mechanical calculations. Structures for the clusters series, (HCOOH)(n)H(+) and (HCOOH)(n)H(3)O(+), where 2 < or = n < or = 4, are proposed based on ab initio electronic structure methods. Results show that cluster growth does not present a regular pattern of nucleation. A stability analysis was performed considering the commonly defined stability function, where E is the total electronic energy plus the zero point vibrational energy correction, including the BSSE correction. The stability analysis leads to a picture that is compatible with experimental observations, indicating a decay of the stability with the increase of cluster mass. Temporal behavior of the clusters was evaluated by Born-Oppenheimer molecular dynamics to check the mechanism that provides cluster stability. The evaluated temporal profiles indicate the importance of hydrogen atom migration between the formic acid moieties to maintain the stability of the structures.
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Affiliation(s)
- Leonardo Baptista
- Universidade Federal do Rio de Janeiro, Instituto de Quimica, Departamento de Fisico-Quimica, Cidade Universitaria, Ilha do Fundao, 21949-900, Rio de Janeiro, RJ, Brazil.
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16
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Uhm S, Kwon Y, Chung ST, Lee J. Highly effective anode structure in a direct formic acid fuel cell. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2008.02.052] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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18
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Feketeová L, O’Hair RAJ. Multiply protonated betaine clusters are stable in the gas phase. Chem Commun (Camb) 2008:4942-4. [DOI: 10.1039/b808124g] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Heinbuch S, Dong F, Rocca JJ, Bernstein ER. Single photon ionization of hydrogen bonded clusters with a soft x-ray laser: (HCOOH)x and (HCOOH)y(H2O)z. J Chem Phys 2007; 126:244301. [PMID: 17614543 DOI: 10.1063/1.2746036] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Pure, neutral formic acid (HCOOH)n+1 clusters and mixed (HCOOH)(H2O) clusters are investigated employing time of flight mass spectroscopy and single photon ionization at 26.5 eV using a very compact, capillary discharge, soft x-ray laser. During the ionization process, neutral clusters suffer little fragmentation because almost all excess energy above the vertical ionization energy is taken away by the photoelectron, leaving only a small part of the photon energy deposited into the (HCOOH)n+1+ cluster. The vertical ionization energy minus the adiabatic ionization energy is enough excess energy in the clusters to surmount the proton transfer energy barrier and induce the reaction (HCOOH)n+1+-->(HCOOH)nH+ +HCOO making the protonated (HCOOH)nH+ series dominant in all data obtained. The distribution of pure (HCOOH)nH+ clusters is dependent on experimental conditions. Under certain conditions, a magic number is found at n=5. Metastable dissociation rate constants of (HCOOH)nH+ are measured in the range (0.1-0.8)x10(4) s(-1) for cluster sizes 4<n<9. The rate constants display an odd/even alternating behavior between monomer and dimer loss that can be attributed to the structure of the cluster. When small amounts of water are added to the formic acid, the predominant signals in the mass spectrum are still (HCOOH)nH+ cluster ions. Also observed are the protonated mixed cluster series (HCOOH)n(H2O)mH+ for n=1-8 and m=0-4. A magic number in the cluster series n=5, m=1 is observed. The mechanisms and dynamics of formation of these neutral and ionic clusters are discussed.
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Affiliation(s)
- S Heinbuch
- Department of Electrical and Computer Engineering, Colorado State University, For Collins, Colorado 80523, USA
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20
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Mejía SM, Espinal JF, Restrepo A, Mondragón F. Molecular Interaction of (Ethanol)2−Water Heterotrimers. J Phys Chem A 2007; 111:8250-6. [PMID: 17665885 DOI: 10.1021/jp073168g] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The potential energy surface of the (ethanol)2-water heterotrimers for the trans and gauche conformers of ethanol was studied using density functional theory. The same approximation was used for characterizing representative clusters of (ethanol)3, (methanol)3, and (methanol)2-water. Trimerization energies and enthalpies as well as the analysis of geometric parameters suggest that the structures with a cyclic pattern in the three hydrogen bonds of the type O-H---O (primary hydrogen bonds), where all molecules are proton donor-acceptor at the same time, are more stable than those with just two primary hydrogen bonds. Additionally, we propose the formation of "secondary hydrogen bonds" between hydrogen atoms of the methyl group of ethanol and the oxygen atom of water or other ethanol molecule (C-H---O), which were found to be weaker than the primary hydrogen bonds.
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Affiliation(s)
- Sol M Mejía
- Institute of Chemistry, University of Antioquia, A. A. 1226, Medellín, Colombia
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21
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Vander Auwera J, Didriche K, Perrin A, Keller F. Absolute line intensities for formic acid and dissociation constant of the dimer. J Chem Phys 2007; 126:124311. [PMID: 17411127 DOI: 10.1063/1.2712439] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Absolute line intensities in the nu(6) and nu(8) interacting bands of trans-HCOOH, observed near 1105.4 and 1033.5 cm(-1), respectively, and the dissociation constant of the formic acid dimer (HCOOH)(2) have been measured using Fourier transform spectroscopy at a resolution of 0.002 cm(-1). Eleven spectra of formic acid, at 296.0(5) K and pressures ranging from 14.28(25) to 314.0(24) Pa, have been recorded between 600 and 1900 cm(-1) with an absorption path length of 19.7(2) cm. 437 integrated absorption coefficients have been measured for 72 lines in the nu(6) band. Analysis of the pressure dependence yielded the dissociation constant of the formic acid dimer, K(p)=361(45) Pa, and the absolute intensity of the 72 lines of HCOOH. The accuracy of these results was carefully estimated. The absolute intensities of four lines of the weak nu(8) band were also measured. Using an appropriate theory, the integrated intensity of the nu(6) and nu(8) bands was determined to be 3.47 x 10(-17) and 4.68 x 10(-19) cm(-1)(molecule cm(-2)) respectively, at 296 K. Both the dissociation constant and integrated intensities were compared to earlier measurements.
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Affiliation(s)
- J Vander Auwera
- Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, Brussels, Belgium.
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22
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Liu Y, Liu WQ, Li HY, Yang Y, Cheng S. Hydrogen Bonding Interaction of Formic Acid-, Formaldehyde-, Formylfluoride-Nitrosyl Hydride: Theoretical Study on the Geometries, Interaction Energies and Blue- or Red-Shifted Hydrogen Bonds. CHINESE J CHEM 2007. [DOI: 10.1002/cjoc.200790014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Tabayashi K, Yamamoto K, Takahashi O, Tamenori Y, Harries JR, Gejo T, Iseda M, Tamura T, Honma K, Suzuki IH, Nagaoka SI, Ibuki T. Inner-shell excitation spectroscopy and fragmentation of small hydrogen-bonded clusters of formic acid after core excitations at the oxygen K edge. J Chem Phys 2006; 125:194307. [PMID: 17129103 DOI: 10.1063/1.2387949] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Inner-shell excitation spectra and fragmentation of small clusters of formic acid have been studied in the oxygen K-edge region by time-of-flight fragment mass spectroscopy. In addition to several fragment cations smaller than the parent molecule, we have identified the production of HCOOH.H+ and H3O+ cations characteristic of proton transfer reactions within the clusters. Cluster-specific excitation spectra have been generated by monitoring the partial ion yields of the product cations. Resonance transitions of O1s(C[double bond]O/OH) electrons into pi(CO)* orbital in the preedge region were found to shift in energy upon clusterization. A blueshift of the O1s(C[double bond]O)-->pi(CO)* transition by approximately 0.2 eV and a redshift of the O1s(OH)-->pi(CO)* by approximately 0.6 eV were observed, indicative of strong hydrogen-bond formation within the clusters. The results have been compared with a recent theoretical calculation, which supports the conclusion that the formic-acid clusters consist of the most stable cyclic dimer andor trimer units. Specifically labeled formic acid-d, HCOOD, was also used to examine the core-excited fragmentation mechanisms. These deuterium-labeled experiments showed that HDO+ was formed via site-specific migration of a formyl hydrogen within an individual molecule, and that HD2O+ was produced via the subsequent transfer of a deuterium atom from the hydroxyl group of a nearest-neighbor molecule within a cationic cluster. Deuteron (proton) transfer from the hydroxyl site of a hydrogen-bond partner was also found to take place, producing deuteronated HCOOD.D+ (protonated HCOOH.H+) cations within the clusters.
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Affiliation(s)
- Kiyohiko Tabayashi
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.
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Karpfen A, Thakkar AJ. Does the most stable formic acid tetramer have π stacking or C–H⋯O interactions? J Chem Phys 2006; 124:224313. [PMID: 16784280 DOI: 10.1063/1.2209687] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Density functional theory (DFT), Moller-Plesset (MP) perturbation theory, and coupled-cluster calculations are used to examine low-energy minima on the potential energy surface of the formic acid tetramer (HCOOH)(4). The potential energy surface is rather flat with respect to rotation of one of the dimers, relative to the other dimer in an aligned stack, about the axis passing through the inversion centers of the dimers. Our best calculations suggest that an aligned pi-pi stack of two dimers is very likely to be the global minimum but there are two other pi-pi stacks within 0.5 kcal /mol. Moreover, a fourth pi-pi stack, a planar association of two dimers held together by C-H...O interactions, and a bowl structure all lie within 1 kcal /mol of the lowest-energy structure.
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Affiliation(s)
- Alfred Karpfen
- Institute for Theoretical Chemistry, University of Vienna, Währinger Strasse 17, A-1090 Vienna, Austria.
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Kampschulte L, Lackinger M, Maier AK, Kishore RSK, Griessl S, Schmittel M, Heckl WM. Solvent Induced Polymorphism in Supramolecular 1,3,5-Benzenetribenzoic Acid Monolayers. J Phys Chem B 2006; 110:10829-36. [PMID: 16771333 DOI: 10.1021/jp057553m] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This work presents a scanning tunneling microscopy (STM) based study of benzenetribenzoic acid (BTB) monolayer structures at the liquid-solid interface. On graphite(0001) the tailored molecules self-assemble into 2D supramolecular host systems, suitable for the incorporation of other nanoscopic objects. Two crystallographically different BTB structures were found-both hydrogen bonded networks. A specific structure was deliberately selected by solvent identity. One of the BTB polymorphs is a 6-fold chicken-wire structure with circular, approximately 2.8 nm wide cavities. The other structure exhibits an oblique unit cell and a different hydrogen bonding pattern. The large cavity size of the chicken-wire structure was made possible through comparatively strong 2-fold hydrogen bonds between carboxylic groups. In addition, the low conformational flexibility of BTB was supportive to combat the tendency for dense packing.
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Affiliation(s)
- Lorenz Kampschulte
- Department für Geo- und Umweltwissenschaften, Ludwig Maximilians Universität München and Center for Nanoscience, Theresienstrasse 41, D-80333 München, Germany
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Takahashi O, Yamanouchi S, Yamamoto K, Tabayashi K. Theoretical study of the X-ray absorption spectra of small formic acid clusters. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2005.12.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bahr S, Borodin A, Höfft O, Kempter V, Allouche A. Interaction of formic acid with solid water. J Chem Phys 2005; 122:234704. [PMID: 16008470 DOI: 10.1063/1.1929732] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The interaction of formic acid (HCOOH) with solid water, deposited on tungsten at 80 K, was investigated. We have prepared and annealed formic acid (FA)/water interfaces (FA layers on thin films of solid water and H(2)O adlayers on thin FA films). Metastable impact electron spectroscopy and ultraviolet photoemission spectroscopy (He I and II) were utilized to study the electron emission from the 10a' to 6a' molecular orbitals (MOs) of FA, and the 1b(1), 3a(1), and 1b(2) MOs of H(2)O. These spectra were compared with results of density-functional theory calculations on FA-H(2)O complexes reported in Ref. 14 [A. Allouche, J. Chem. Phys. 122, 234703(2005), (preceding paper)]. Temperature programmed desorption was applied for information on the desorption kinetics. Initially, FA is adsorbed on top of the water film. The FA spectra are distorted with respect to those from FA monomers; it is concluded that a strong interaction exists between the adsorbates. Even though partial solvation of FA species takes place during annealing, FA remains in the top layer up to the desorption of the water film. When H(2)O molecules are offered to FA films at 80 K, no water network is formed during the initial stage of water exposure; H(2)O molecules interact individually via H bonds with the formic acid network. Experiment and theory agree that no water-induced deprotonation of the formic acid molecules takes place.
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Affiliation(s)
- S Bahr
- Institut für Physik und Physikalische Technologien, Technische Universität Clausthal, D-38678 Clausthal-Zellerfeld, Germany
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Allouche A. Quantum studies of hydrogen bonding in formic acid and water ice surface. J Chem Phys 2005; 122:234703. [PMID: 16008469 DOI: 10.1063/1.1929733] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The structure and spectroscopy (electronic and vibrational) of formic acid (HCOOH) dimers and trimers are investigated by means of the hybrid (B3LYP) density-functional theory. Adsorption of single and dimer HCOOH on amorphous water ice surface is modeled using two different water clusters. Particular attention has been given to spectroscopic consequences. Several hypotheses on formic acid film growing on ice and incorporation of a single water molecule in the formic acid film are proposed.
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Affiliation(s)
- A Allouche
- Physique des Interactions Ioniques et Moléculaires, Université de Provence and Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche N 6633, 13397 Marseille Cedex 20, France.
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Roy AK, Hu S, Thakkar AJ. Clusters of glycolic acid with three to six water molecules. J Chem Phys 2005; 122:074313. [PMID: 15743238 DOI: 10.1063/1.1851974] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Semiempirical, ab initio, and density functional theory calculations are used to locate many low-energy minima on the potential energy surfaces of the CH2OHCOOH-(H2O)n complexes with n = 3,4,5,6. In the clusters with three, four, and five water molecules, the lowest-energy structure consists of a (H2O)n complex, not necessarily of lowest energy, hydrogen bonded to the carboxylic group of the glycolic acid. The lowest-energy structure for n = 6 is similar except that the water hexamer is hydrogen bonded to both the carboxylic and alpha-hydroxyl groups of the acid. In all the lowest-energy clusters, the intramolecular hydrogen bond remains intact in the glycolic acid.
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Affiliation(s)
- Amlan K Roy
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick E3B 6E2, Canada
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Wang W. Method-dependent relative stability of hydrogen bonded and π–π stacked structures of the formic acid tetramer. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2004.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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