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Jerosimić S, Milovanović M, Mitić M, Wester R, Gianturco FA. Investigating Possible Dipole-Bound States of Cyanopolyynes: the Case for the C 5 N - Anion Detected in Interstellar Space. Chemphyschem 2023; 24:e202300248. [PMID: 37585236 PMCID: PMC10962575 DOI: 10.1002/cphc.202300248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/11/2023] [Accepted: 08/11/2023] [Indexed: 08/17/2023]
Abstract
We present results of quantum structure calculations aimed at demonstrating the possible existence of dipole-bound states (DBS) for the anionC 5 N - ${{\rm{C}}_5 {\rm{N}}^ - }$ , a species already detected in the Interstellar medium (ISM). The positive demonstration of DBS existence using ab initio studies is an important step toward elucidating possible pathways for the formation of the more tightly bound valence bound states (VBS) in environments where free electrons from starlight ionization processes are known to be available to interact with the radical partner of the title molecule. Our current calculations show that such excited DBS states can exist inC 5 N - ${{\rm{C}}_5 {\rm{N}}^ - }$ , in agreement with what we had previously found for the smallercyanopolyyne in the series: theC 3 N - ${{\rm{C}}_3 {\rm{N}}^ - }$ anion. This system has a very weakly bound anion with binding energies of about 3 and 9 cm-1 for the1 Σ + ${^1 \Sigma ^ + }$ and3 Σ + ${^3 \Sigma ^ + }$ DBS, respectively.
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Affiliation(s)
- Stanka Jerosimić
- University of Belgrade -Faculty of Physical ChemistryStu-dentski trg 12–1611158BelgradeSerbia
| | - Milan Milovanović
- University of Belgrade -Faculty of Physical ChemistryStu-dentski trg 12–1611158BelgradeSerbia
| | - Marko Mitić
- University of Belgrade -Faculty of Physical ChemistryStu-dentski trg 12–1611158BelgradeSerbia
| | - Roland Wester
- Institut für Ionenphysik und Angewandte PhysikUniversitaet InnsbruckTechnikerstr. 25A-6020InnsbruckAustria
| | - Francesco A. Gianturco
- Institut für Ionenphysik und Angewandte PhysikUniversitaet InnsbruckTechnikerstr. 25A-6020InnsbruckAustria
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Czapla M, Simons J, Skurski P. Dissociative electron attachment to HGaF 4 Lewis-Brønsted superacid. Phys Chem Chem Phys 2018; 20:21739-21745. [PMID: 30105336 DOI: 10.1039/c8cp04007a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The consequences of an excess electron attachment to HGaF4 (HF/GaF3) superacid are investigated on the basis of theoretical calculations employing ab initio methods. It is found that the dipole potential of HGaF4 plays an important role in the initial formation of a dipole-bound anionic state. Due to the kinetic instability of that initially formed anion, a fragmentation reaction occurs promptly and leads to (GaF4)- and H as the final products. The energy profile of this process, its rate, and mechanism are presented and discussed.
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Affiliation(s)
- Marcin Czapla
- Laboratory of Quantum Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk 80-308, Poland.
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Jerosimić SV, Gianturco FA, Wester R. Associative detachment (AD) paths for H and CN - in the gas-phase: astrophysical implications. Phys Chem Chem Phys 2018; 20:5490-5500. [PMID: 29090290 DOI: 10.1039/c7cp05573k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct dynamical paths leading to Associative Detachment (AD) in the gas-phase, and specifically in the low-temperature regions of the Dark Molecular Clouds (DMC) in the ISM, or in cold trap laboratory experiments, are investigated with quantum chemical methods by using a high-level multi-reference Configuration Interaction (CI) approach that employs single and double excitations plus Davidson perturbative correction [MRSDCI(Q)] and the d-aug-cc-pV5Z basis set. The potential energy curves for H + CN- are constructed for different directions of the H partner approaching the CN- anion within the framework of the Born-Oppenheimer approximation. The present calculations found that the AD energetics at low temperature becomes favorable only along a selected range of approaching directions, thus showing that there is a preferred path of forming HCN at low temperatures, while that of forming its HNC isomer is found to be energetically forbidden. Given the existence in the ISM of different HCN/HNC ratios in different environments, we discuss the implications of our findings for selective formation of either isomer in the low-temperature conditions of the molecular cloud cores.
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Affiliation(s)
- Stanka V Jerosimić
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, PAC 105305, 11158 Belgrade, Serbia
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Khiri D, Chambaud G. Reaction of CN(-) with F, Cl, O, and S Atoms: Attachment or Associative Detachment? J Phys Chem A 2015; 119:11461-70. [PMID: 26517187 DOI: 10.1021/acs.jpca.5b08867] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Highly correlated ab initio wave functions within the UCCSD(T)-F12 approach have been used to map the potential energy surfaces (PESs) describing the reactivity of the CN(-) (X(1)Σ(+)) anion with neutral atoms present in interstellar media (F, Cl, O, and S). With the H atom, for comparison, the reaction [CN(-)((1)Σ(+)) + H((2)S)] evolves along the PES of the X(2)Σ(+) electronic ground state of HCN(-) (or HNC(-)) until the crossing with the X(1)Σ(+) electronic ground state of HCN (or HNC), where electron detachment occurs. The process is rather similar to the two halogen atoms F and Cl, with some differences due to the larger electron affinity of the halogens, making possible the existence of ClCN(-) in a (2)Σ(+) state. The reaction of CN(-) with O and S atoms proceeds via a multistep mechanism. The lowest electronic state at long distance, the (3)Π state arising from the [CN(-)((1)Σ(+)) + O/S((3)P)] reaction channel, does not correlate with the X(1)Σ(+) ground state of the XCN(-) anion (X = O or S). This (3)Π state and its bent components cross at medium RXC (RXN) distances the X(1)Σ(+) ground state of XCN(-) or XNC(-), and at shorter distances the X(2)Π state of the neutral XCN or XNC where the extra electron can detach. With both O and S atoms, it is shown that the spin-orbit couplings can efficiently lead the [CN(-)((1)Σ(+)) + O/S((3)P)] reaction toward the stable X(1)Σ(+) ground state of XCN(-) and XNC(-).
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Affiliation(s)
- D Khiri
- Université de Tunis El Manar , Laboratoire de Spectroscopie Atomique Moléculaire et Applications LSAMA, Tunis, Tunisia.,Université Paris-Est Marne-la-Vallée , Laboratoire MSME, UMR-8208 CNRS, Cité Descartes, Champs-sur-Marne, 77454 Marne-la-Vallée, France
| | - G Chambaud
- Université Paris-Est Marne-la-Vallée , Laboratoire MSME, UMR-8208 CNRS, Cité Descartes, Champs-sur-Marne, 77454 Marne-la-Vallée, France
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Nguyen TL, Baraban JH, Ruscic B, Stanton JF. On the HCN – HNC Energy Difference. J Phys Chem A 2015; 119:10929-34. [DOI: 10.1021/acs.jpca.5b08406] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thanh L. Nguyen
- Institute for Theoretical Chemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Joshua H. Baraban
- Institute for Theoretical Chemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Branko Ruscic
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Computation
Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - John F. Stanton
- Institute for Theoretical Chemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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Herbert JM. The Quantum Chemistry of Loosely-Bound Electrons. REVIEWS IN COMPUTATIONAL CHEMISTRY 2015. [DOI: 10.1002/9781118889886.ch8] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Smuczyńska S, Gwarda I, Anusiewicz I, Skurski P. Is the p-chloroaniline anion bound almost entirely by correlation? J Chem Phys 2009; 130:124316. [DOI: 10.1063/1.3092980] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Abstract
The experimental and theoretical study of molecular anions has undergone explosive growth over the past 40 years. Advances in techniques used to generate anions in appreciable numbers as well as new ion-storage, ion-optics, and laser spectroscopic tools have been key on the experimental front. Theoretical developments on the electronic structure and molecular dynamics fronts now allow one to achieve higher accuracy and to study electronically metastable states, thus bringing theory in close collaboration with experiment in this field. In this article, many of the experimental and theoretical challenges specific to studying molecular anions are discussed. Results from many research groups on several classes of molecular anions are overviewed, and both literature citations and active (in online html and pdf versions) links to numerous contributing scientists' Web sites are provided. Specific focus is made on the following families of anions: dipole-bound, zwitterion-bound, double-Rydberg, multiply charged, metastable, cluster-based, and biological anions. In discussing each kind of anion, emphasis is placed on the structural, energetic, spectroscopic, and chemical-reactivity characteristics that make these anions novel, interesting, and important.
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Affiliation(s)
- Jack Simons
- Chemistry Department, Henry Eyring Center for Theoretical Chemistry, UniVersity of Utah, Salt Lake City, Utah, USA
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Haranczyk M, Gutowski M. Effect of excess electron and one water molecule on relative stability of the canonical and zwitterionic tautomers of glycine. J Chem Phys 2008; 128:125101. [DOI: 10.1063/1.2838910] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Hao XY, Xu X. Asymmetrically solvated anion with both kinetic and thermodynamic stabilities: Theoretical studies on the cluster anions (HF)n - (n=3-6). J Chem Phys 2007; 126:154308. [PMID: 17461627 DOI: 10.1063/1.2718953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
At the level of MP2 with the aug-cc-pVDZ and aug-cc-pVTZ basis sets supplemented with diffuse bond functions, the authors searched the potential energy surfaces of (HF)(n) (-) (n=3-6). In accordance with the literature, they found that the symmetrically solvated-electron anion (3(FH){e}) possesses the largest vertical detachment energy (VDE), while the dipole-bound anion ((FH)(3){e}) is the lowest isomer in energy for (HF)(3) (-). Their calculations demonstrated that, with the increase of the cluster size, the asymmetric (FH)(a){e}(HF)(b) cluster is stabilized with a simultaneously increased VDE. Thus they predicted that, for (HF)(6) (-), the (FH)(4){e}(HF)(2) cluster is both kinetically and thermodynamically most stable, possessing the largest VDE and being the global minimum at the same time.
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Affiliation(s)
- Xi-Yun Hao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, Fujian, People's Republic of China
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Wu D, Li Y, Li Z, Chen W, Li ZR, Sun CC. Characterization of solvated electrons in hydrogen cyanide clusters: (HCN)n− (n=3, 4). J Chem Phys 2006; 124:054310. [PMID: 16468872 DOI: 10.1063/1.2151894] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Theoretical studies of the solvated electrons (HCN)n- (n=3, 4) reveal a variety of electron trapping possibilities in the (HCN)n (n=3, 4) clusters. Two isomers for (HCN)3- and four isomers for (HCN)4- are obtained at the MP2aug-cc-pVDZ+dBF (diffusive bond functions) level of theory. In view of vertical electron detachment energies (VDEs) at the CCSD(T) level, the excess electron always "prefers" locating in the center of the system, i.e., the isomer with higher coordination number shows larger VDE value. However, the most stable isomers of the solvated electron state (HCN)3- and (HCN)4- are found to be the linear Cinfinitynu and Dinfinityh structures, respectively, but not the fullyl symmetric structures which have the largest VDE values.
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Affiliation(s)
- Di Wu
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
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Herbert JM, Head-Gordon M. Accuracy and limitations of second-order many-body perturbation theory for predicting vertical detachment energies of solvated-electron clusters. Phys Chem Chem Phys 2006; 8:68-78. [PMID: 16482246 DOI: 10.1039/b513098k] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Vertical electron detachment energies (VDEs) are calculated for a variety of (H(2)O)(n)(-) and (HF)(n)(-) isomers, using different electronic structure methodologies but focusing in particular on a comparison between second-order Møller-Plesset perturbation theory (MP2) and coupled-cluster theory with noniterative triples, CCSD(T). For the surface-bound electrons that characterize small (H(2)O)(n)(-) clusters (n< or = 7), the correlation energy associated with the unpaired electron grows linearly as a function of the VDE but is unrelated to the number of monomers, n. In every example considered here, including strongly-bound "cavity" isomers of (H(2)O)(24)(-), the correlation energy associated with the unpaired electron is significantly smaller than that associated with typical valence electrons. As a result, the error in the MP2 detachment energy, as a fraction of the CCSD(T) value, approaches a limit of about -7% for (H(2)O)(n)(-) clusters with VDEs larger than about 0.4 eV. CCSD(T) detachment energies are bounded from below by MP2 values and from above by VDEs calculated using second-order many-body perturbation theory with molecular orbitals obtained from density functional theory. For a variety of both strongly- and weakly-bound isomers of (H(2)O)(20)(-) and (H(2)O)(24)(-), including both surface states and cavity states, these bounds afford typical error bars of +/-0.1 eV. We have found only one case where the Hartree-Fock and density functional orbitals differ qualitatively; in this case the aforementioned bounds lie 0.4 eV apart, and second-order perturbation theory may not be reliable.
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Affiliation(s)
- John M Herbert
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.
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Raczyńska ED, Kosińska W, Ośmiałowski B, Gawinecki R. Tautomeric Equilibria in Relation to Pi-Electron Delocalization. Chem Rev 2005; 105:3561-612. [PMID: 16218561 DOI: 10.1021/cr030087h] [Citation(s) in RCA: 248] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sawicka A, Skurski P, Simons J. Excess Electron Attachment to Disulfide-Bridged l,l-Cystine. An ab Initio Study. J Phys Chem A 2004. [DOI: 10.1021/jp0311862] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Agnieszka Sawicka
- Department of Chemistry, University of Gdańsk, Sobieskiego 18, 80−952 Gdańsk, Poland, and Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
| | - Piotr Skurski
- Department of Chemistry, University of Gdańsk, Sobieskiego 18, 80−952 Gdańsk, Poland, and Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
| | - Jack Simons
- Department of Chemistry, University of Gdańsk, Sobieskiego 18, 80−952 Gdańsk, Poland, and Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
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Anusiewicz I, Berdys J, Simons J, Skurski P. Electron detachment energies in high-symmetry alkali halide solvated-electron anions. J Chem Phys 2003. [DOI: 10.1063/1.1580113] [Citation(s) in RCA: 7] [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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Anusiewicz I, Skurski P. Negative Ion Formation in Sodium Chloride TrimerAn ab Initio Study. J Phys Chem A 2003. [DOI: 10.1021/jp022473t] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Iwona Anusiewicz
- Department of Chemistry, University of Gdańsk, ul. Sobieskiego 18, 80-952 Gdańsk, Poland and Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
| | - Piotr Skurski
- Department of Chemistry, University of Gdańsk, ul. Sobieskiego 18, 80-952 Gdańsk, Poland and Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
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Anusiewicz I, Skurski P, Simons J. First Evidence of Rhombic (NaCl)2-. Ab Initio Reexamination of the Sodium Chloride Dimer Anion. J Phys Chem A 2002. [DOI: 10.1021/jp021318b] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Iwona Anusiewicz
- Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Department of Chemistry, University of Gdańsk, ul. Sobieskiego 18, 80-952 Gdańsk, Poland
| | - Piotr Skurski
- Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Department of Chemistry, University of Gdańsk, ul. Sobieskiego 18, 80-952 Gdańsk, Poland
| | - Jack Simons
- Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, and Department of Chemistry, University of Gdańsk, ul. Sobieskiego 18, 80-952 Gdańsk, Poland
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Sawicka A, Skurski P. Dipole-bound anions supported by charge-transfer interaction: valence- and dipole-bound anionic states of H3N→BF3. Chem Phys 2002. [DOI: 10.1016/s0301-0104(02)00730-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Skurski P, Da̧bkowska I, Sawicka A, Rak J. Dipole-bound and dispersion-bound anions supported by the asymmetric tautomers of aminophosphine: H3NPH and HNPH3. Chem Phys 2002. [DOI: 10.1016/s0301-0104(02)00488-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Skurski P, Simons J. An excess electron bound to urea. III. The urea dimer as an electron trap. J Chem Phys 2002. [DOI: 10.1063/1.1459706] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Peterson KA, Gutowski M. Electron binding energies of dipole-bound anions at the coupled cluster level with single, double, and triple excitations: HCN− and HNC−. J Chem Phys 2002. [DOI: 10.1063/1.1445743] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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