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León-Pimentel CI, Saint-Martin H, Ramírez-Solís A. Mg(II) and Ca(II) Microsolvation by Ammonia: Born-Oppenheimer Molecular Dynamics Studies. J Phys Chem A 2021; 125:4565-4577. [PMID: 34029097 DOI: 10.1021/acs.jpca.1c02815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the structural and energetic features of the Mg2+ and Ca2+ cations in ammonia microsolvation environments. Born-Oppenhemier molecular dynamics studies are carried out for [Mg(NH3)n]2+ and [Ca(NH3)n]2+ clusters with n = 2, 3, 4, 6, 8, 20, and 27 at 300 K based on hybrid density functional theory calculations. We determine binding energies per ammonia molecule and the metal cation solvation patterns as a function of the number of molecules. The general trend for Mg2+ is that the Mg-N distances increase as a function of n until the first solvation shell is populated by six ammonia molecules, and then the distances slightly decrease while CN = 6 does not change. For Ca2+, the first solvation shell at room temperature is populated by eight ammonia molecules for clusters with more than one solvation shell, leading to a different structure from that of [Ca(NH3)6]2+ hexamine. The evaporation of NH3 molecules was found at 300 K only for Mg2+ clusters with n ≥ 10; this was not the case for Ca2+ clusters. Vibrational spectra are obtained for all of the clusters, and the evolution of the main features is discussed. EXAFS spectra are also presented for the [Mg(NH3)27(NH3)27]2+ and [Ca(NH3)27]2+ clusters, which yield valuable data to be compared with experimental data in the liquid phase, as previously done for the aqueous solvation of these dications.
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Affiliation(s)
- C I León-Pimentel
- Departamento de Física, Centro de Investigación en Ciencias-IICBA Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos 62209, México
| | - H Saint-Martin
- Instituto de Ciencias Físicas, Universidad Nacional Autonóna de México, Cuernvaca, Morelos 62210 México
| | - A Ramírez-Solís
- Departamento de Física, Centro de Investigación en Ciencias-IICBA Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos 62209, México
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2
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Kozubal J, Heck TR, Metz RB. Vibrational Spectroscopy of Cr+(NH3)n (n = 1–6) Reveals Coordination and Hydrogen-Bonding Motifs. J Phys Chem A 2019; 123:4929-4936. [DOI: 10.1021/acs.jpca.9b03196] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Justine Kozubal
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Tristan R. Heck
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Ricardo B. Metz
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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Hattab A, Dhaouadi Z, Malloum A, Fifen JJ, Lahmar S, Russo N, Sicilia E. Structures, binding energies, temperature effects, infrared spectroscopy of [
Mg
(
NH
3
)
n
= 1−10
]
+
clusters from DFT and MP2 investigations. J Comput Chem 2019; 40:1707-1717. [DOI: 10.1002/jcc.25825] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 02/04/2019] [Accepted: 02/06/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Awatef Hattab
- Laboratoire de Spectroscopie Atomique Moléculaire et Applications, Faculté des Sciences de TunisUniversité de Tunis El Manar, Campus Universitaire 1060, Tunis Tunisie
- Faculté des Sciences de BizerteUniversité de Carthage 7023, Zarzouna Bizerte Tunisie
| | - Zoubeida Dhaouadi
- Laboratoire de Spectroscopie Atomique Moléculaire et Applications, Faculté des Sciences de TunisUniversité de Tunis El Manar, Campus Universitaire 1060, Tunis Tunisie
- Faculté des Sciences de BizerteUniversité de Carthage 7023, Zarzouna Bizerte Tunisie
| | - Alhadji Malloum
- Department of Physics, Faculty of ScienceThe University of Ngaoundere, 454, Ngaoundere Cameroon
| | - Jean Jules Fifen
- Department of Physics, Faculty of ScienceThe University of Ngaoundere, 454, Ngaoundere Cameroon
| | - Souad Lahmar
- Laboratoire de Spectroscopie Atomique Moléculaire et Applications, Faculté des Sciences de TunisUniversité de Tunis El Manar, Campus Universitaire 1060, Tunis Tunisie
| | - Nino Russo
- Dipartimento di Chimica e Tecnologie ChimicheUniversitá della Calabria, Vi P. Bucci 87036 Rende (CS) Italia
| | - Emilia Sicilia
- Dipartimento di Chimica e Tecnologie ChimicheUniversitá della Calabria, Vi P. Bucci 87036 Rende (CS) Italia
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Ashraf MA, Kozubal J, Metz RB. Bond dissociation energy and electronic spectroscopy of Cr+(NH3) and its isotopomers. J Chem Phys 2018; 149:174301. [DOI: 10.1063/1.5053691] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Muhammad Affawn Ashraf
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
| | - Justine Kozubal
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
| | - Ricardo B. Metz
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
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Coordination and solvation of V+ with ammonia molecules: Infrared photodissociation spectroscopy of V+(NH3)n (n=4–8). Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.04.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Imamura T, Ohashi K, Sasaki J, Inoue K, Furukawa K, Judai K, Nishi N, Sekiya H. Infrared photodissociation spectroscopy of Co+(NH3)n and Ni+(NH3)n: preference for tetrahedral or square-planar coordination. Phys Chem Chem Phys 2010; 12:11647-56. [DOI: 10.1039/c003974h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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7
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Inoue K, Ohashi K, Iino T, Sasaki J, Judai K, Nishi N, Sekiya H. Coordination structures of the silver ion: infrared photodissociation spectroscopy of Ag+(NH3)n (n = 3–8). Phys Chem Chem Phys 2008; 10:3052-62. [DOI: 10.1039/b802050g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Inoue K, Ohashi K, Iino T, Judai K, Nishi N, Sekiya H. Coordination and solvation of copper ion: infrared photodissociation spectroscopy of Cu(+)(NH(3))(n) (n = 3-8). Phys Chem Chem Phys 2007; 9:4793-802. [PMID: 17712458 DOI: 10.1039/b705267g] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coordination and solvation structures of the Cu(+)(NH(3))(n) ions with n = 3-8 are studied by infrared photodissociation spectroscopy in the NH-stretch region with the aid of density functional theory calculations. Hydrogen bonding between NH(3) molecules is absent for n = 3, indicating that all NH(3) molecules are bonded directly to Cu(+) in a tri-coordinated form. The first sign of hydrogen bonding is detected at n = 4 through frequency reduction and intensity enhancement of the infrared transitions, implying that at least one NH(3) molecule is placed in the second solvation shell. The spectra of n = 4 and 5 suggest the coexistence of multiple isomers, which have different coordination numbers (2, 3, and 4) or different types of hydrogen-bonding configurations. With increasing n, however, the di-coordinated isomer is of growing importance until becoming predominant at n = 8. These results signify a strong tendency of Cu(+) to adopt the twofold linear coordination, as in the case of Cu(+)(H(2)O)(n).
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Affiliation(s)
- Kazuya Inoue
- Department of Molecular Chemistry, Graduate School of Sciences, Kyushu University, Hakozaki, Fukuoka, 812-8581, Japan
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Abstract
Beginning in the mid-1980s, a number of innovative experimental studies on ionic clusters emerged from the laboratory of Yuan T. Lee combining infrared laser spectroscopy and tandem mass spectrometry. Coupled with modern electronic structure calculations, this research explored many facets of ionic clusters including solvation, structure, and dynamics. These efforts spawned a resurgence in gas-phase cluster spectroscopy. This paper will focus on the major areas of research initiated by the Lee group and how these studies stimulated and influenced others in what is currently a vibrant and growing field.
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Affiliation(s)
- James M Lisy
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA.
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Iino T, Ohashi K, Mune Y, Inokuchi Y, Judai K, Nishi N, Sekiya H. Infrared photodissociation spectra and solvation structures of Cu+(H2O)n (n=1–4). Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.06.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Martínez A. Solvation of yttrium with ammonia revisited. Di-amide formation in the reaction of yttrium with ammonia. J Phys Chem A 2006; 110:1978-81. [PMID: 16451033 DOI: 10.1021/jp055996k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reactivity of yttrium atoms toward ammonia is revisited using expanded density functional theory calculations. The new results reveal that absorption of NH3 on YNH is dissociative to form Y(NH2)2. The di-amide species can adsorb further NH3 molecules molecularly to form Y(NH2)2NH3 and Y(NH2)2(NH3)2. The calculations aimed to reveal the detail of the potential energy curves between the imide and the di-amide forms. The Y(NH2)2(NH3)x species are more stable than those of YNH(NH3)x by more than 20 kcal/mol.
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Affiliation(s)
- Ana Martínez
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), Circuito Exterior s/n Ciudad Universitaria, 04510, Coyoacán, México D.F.
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12
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Infrared photodissociation spectroscopy of [Al(NH3)n]+ (n=1–5): Solvation structures and insertion reactions of Al+ into NH3. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2005.11.077] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Velasquez J, Pillai ED, Carnegie PD, Duncan MA. IR Spectroscopy of M+(Acetone) Complexes (M = Mg, Al, Ca): Cation−Carbonyl Binding Interactions. J Phys Chem A 2006; 110:2325-30. [PMID: 16480290 DOI: 10.1021/jp0574899] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
M(+)(acetone) ion-molecule complexes (M = Mg, Al, Ca) are produced in a pulsed molecular beam by laser vaporization and studied with infrared photodissociation spectroscopy in the carbonyl stretch region. All of the spectra exhibit carbonyl stretches that are shifted significantly to lower frequencies than the free-molecule value, consistent with metal cation binding on the oxygen of the carbonyl. Density functional theory is employed to elucidate the shifts and patterns in these spectra. Doublet features are measured for the carbonyl region of Mg(+) and Ca(+) complexes, and these are assigned to Fermi resonances between the symmetric carbonyl stretch and the overtone of the symmetric carbon stretch. The carbonyl stretch red shift is greater for Al(+) than it is for the Mg(+) and Ca(+) complexes. This is attributed to the smaller size of the closed-shell Al(+), which enhances its ability to polarize the carbonyl electrons. Density functional theory correctly predicts the direction of the carbonyl stretch shift and the relative trend for the three metals.
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Okai N, Yoshida S, Aranishi K, Takahata A, Fuke K. Multiphoton ionization and oxidation processes of Mg–ammonia clusters. Phys Chem Chem Phys 2005; 7:921-9. [DOI: 10.1039/b415964k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Walker NR, Walters RS, Duncan MA. Frontiers in the infrared spectroscopy of gas phase metal ion complexes. NEW J CHEM 2005. [DOI: 10.1039/b510678h] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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