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Araujo L, Fantuzzi F, Cardozo TM. Chemical Aristocracy: He 3 Dication and Analogous Noble-Gas-Exclusive Covalent Compounds. J Phys Chem Lett 2024; 15:3757-3763. [PMID: 38551487 PMCID: PMC11017316 DOI: 10.1021/acs.jpclett.4c00826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 03/23/2024] [Accepted: 03/25/2024] [Indexed: 04/12/2024]
Abstract
Herein, we predict the first set of covalently bonded triatomic molecular compounds composed exclusively of noble gases. Using a combination of double-hybrid DFT, CCSD(T), and MRCI+Q calculations and a range of bonding analyses, we explored a set of 270 doubly charged triatomics, which included various combinations of noble gases and main group elements. This extensive exploration uncovered nine noble-gas-exclusive covalent compounds incorporating helium, neon, argon, or combinations thereof, exemplified by cases such as He32+ and related systems. This work brings to light a previously uncharted domain of noble gas chemistry, demonstrating the potential of noble gases in forming covalent molecular clusters.
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Affiliation(s)
- Lucas Araujo
- Instituto
de Química, Universidade Federal
do Rio de Janeiro, Av. Athos da Silveira Ramos 149, Rio de Janeiro 21941-909, Brazil
| | - Felipe Fantuzzi
- School
of Chemistry and Forensic Science, University
of Kent, Park Wood Road, Canterbury CT2 7NH, U.K.
| | - Thiago M. Cardozo
- Instituto
de Química, Universidade Federal
do Rio de Janeiro, Av. Athos da Silveira Ramos 149, Rio de Janeiro 21941-909, Brazil
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2
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Kuntar SP, Ghosh A, Ghanty TK. Prediction of donor-acceptor-type novel noble gas complexes in the triplet electronic state. Phys Chem Chem Phys 2023; 25:6987-6994. [PMID: 36807359 DOI: 10.1039/d2cp05813h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Closed-shell noble gas (Ng) compounds in the singlet electronic state have been extensively studied in the past two decades after the revolutionary discovery of 1HArF molecule. Motivated by the experimental identification of very strong donor-acceptor-type singlet-state Ng complex 1ArOH+, in the present article, for the first time, we report new donor-acceptor-type noble gas complexes in the triplet electronic state (3NgBeN+ (Ng = He-Rn)), where most of the Ng-Be bond lengths are smaller than the corresponding covalent limits. The newly proposed complexes are predicted to be stable by various computational tools, including coupled-cluster and multireference-based methods, with strong Ng-Be bonding (40.4-196.2 kJ mol-1). We have also investigated 3NgBeP+ (Ng = He-Rn) complexes for the purpose of comparison. Various computational results, including the structural parameters, bonding energies, vibrational frequencies, and atoms-in-molecule properties suggest that it may be possible to prepare and characterize these triplet state complexes through suitable experimental technique(s).
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Affiliation(s)
- Subrahmanya Prasad Kuntar
- Homi Bhabha National Institute, Training School complex, Anushaktinagar, Mumbai 400094, India.,Bio-Science Group, Bhabha Atomic Research Centre, Mumbai 400085, India.
| | - Ayan Ghosh
- Homi Bhabha National Institute, Training School complex, Anushaktinagar, Mumbai 400094, India.,Laser and Plasma Technology Division, Beam Technology Development Group, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Tapan K Ghanty
- Homi Bhabha National Institute, Training School complex, Anushaktinagar, Mumbai 400094, India.,Bio-Science Group, Bhabha Atomic Research Centre, Mumbai 400085, India.
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3
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Ghosh A, Maitra A, Kuntar SP, Ghanty TK. Stability-Order Reversal in FSiY and FYSi (Y = N and P) Molecules after the Insertion of a Noble Gas Atom. J Phys Chem A 2022; 126:1132-1143. [PMID: 35157456 DOI: 10.1021/acs.jpca.1c10424] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Recent theoretical prediction and experimental identification of fluorinated noble gas cyanides and isocyanides motivate us to explore a unique novel series of neutral noble gas-inserted heavier cyanofluoride isomers, FNgYSi and FNgSiY (Ng = Kr, Xe, and Rn; Y = N and P), theoretically using quantum chemical calculations. The concerned minima and saddle point geometries have been optimized using DFT, MP2, and CCSD(T) methods. The precursor molecule FSiY is more stable than its isomer FYSi, and the stability order is found to be reversed after the insertion of a noble gas (Ng) atom into them which is in contrast to the previously reported FCN/FNC systems where the stability order in the precursors remains intact after the insertion of a Ng atom into them. The predicted FNgYSi molecules are metastable in nature as they are kinetically stable but thermodynamically unstable with respect to the global minima products (FYSi and Ng). All the calculations for the corresponding FNgSiY molecules clearly indicate that the less stable FNgSiY behaves similarly to the FNgYSi in all respects. The energetics, force constant, and spectroscopic data strongly reinforce the possibility of occurrence of these predicted FNgYSi and FNgSiY molecules which might be experimentally realized under suitable cryogenic condition(s).
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Affiliation(s)
- Ayan Ghosh
- Laser and Plasma Technology Division, Beam Technology Development Group, Bhabha Atomic Research Centre, Training School Complex, Anushakti Nagar, Mumbai 400 085, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, , Mumbai 400 094, India
| | - Anwesha Maitra
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Subrahmanya Prasad Kuntar
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, , Mumbai 400 094, India.,Bio Science Group, Bhabha Atomic Research Centre, Training School Complex, Anushakti Nagar, Mumbai 400 085, India
| | - Tapan K Ghanty
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, , Mumbai 400 094, India.,Bio Science Group, Bhabha Atomic Research Centre, Training School Complex, Anushakti Nagar, Mumbai 400 085, India
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Kuntar SP, Ghosh A, Ghanty TK. Existence of Noble Gas Inserted Phosphorus Fluorides: FNgPF 2 and FNgPF 4 with Ng-P Covalent Bond (Ng = Ar, Kr, Xe and Rn). Phys Chem Chem Phys 2022; 24:20466-20479. [DOI: 10.1039/d2cp02329f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Very limited literature on noble gas (Ng)-phosphorous chemical bonding and our recent theoretical prediction of FNgP molecule motivates us to explore a unique novel class of neutral noble gas inserted...
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Lin WT, Shih YJ, Hsu TJ, Hu WP. Noble Gas in a Ring. Molecules 2021; 26:molecules26154677. [PMID: 34361829 PMCID: PMC8347956 DOI: 10.3390/molecules26154677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 07/22/2021] [Accepted: 07/29/2021] [Indexed: 11/23/2022] Open
Abstract
We have designed a new type of molecule with a noble gas (Ng = Kr and Xe) atom in a six-membered ring. Their structures and stability have been studied by density functional theory and by correlated electronic structure calculations. The results showed that the six-membered ring is planar with very short Ng–O and Ng–N polar covalent bonds. The calculated energy barriers for all the unimolecular dissociation pathways are higher than 20 and 35 kcal/mol for Ng = Kr and Xe, respectively. The current study suggests that these molecules and their derivatives might be synthesized and observable at cryogenic conditions.
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Affiliation(s)
- Wei-Te Lin
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan; (W.-T.L.); (Y.-J.S.)
| | - Ya-Jyun Shih
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan; (W.-T.L.); (Y.-J.S.)
| | - Tzu-Jeng Hsu
- Department of Mechanical Engineering, Chung Yuan Christian University, Chung-Li 320, Taiwan;
| | - Wei-Ping Hu
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan; (W.-T.L.); (Y.-J.S.)
- Correspondence:
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Tsai CC, Lu YW, Hu WP. Theoretical Prediction on the New Types of Noble Gas Containing Anions OBONgO - and OCNNgO - (Ng = He, Ar, Kr and Xe). Molecules 2020; 25:molecules25245839. [PMID: 33322010 PMCID: PMC7763801 DOI: 10.3390/molecules25245839] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/06/2020] [Accepted: 12/07/2020] [Indexed: 11/16/2022] Open
Abstract
The fluorine-less noble gas containing anions OBONgO− and OCNNgO− have been studied by correlated electronic structure calculation and density functional theory. The obtained energetics indicates that for Ng=Kr and Xe, these anions should be kinetically stable at low temperature. The molecular structures and electron density distribution suggests that these anions are stabilized by ion-induced dipole interactions with charges concentrated on the electronegative OBO and OCN groups. The current study shows that in addition to the fluoride ion, polyatomic groups with strong electronic affinities can also form stable noble gas containing anions of the type Y−…NgO.
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Affiliation(s)
| | | | - Wei-Ping Hu
- Correspondence: ; Tel.: +886-5-272-0411 (ext. 66402)
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Ghosh A, Mallick A, Ghanty TK. Anomaly in the stability of the hydroxides of icosagens (B and Al) and their noble gas (Xe and Rn) derivatives: a comparative study. Phys Chem Chem Phys 2020; 22:14109-14124. [PMID: 32542270 DOI: 10.1039/d0cp01928c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Motivated by the discovery of neutral noble gas hydrides, herein, we have explored the possibility of the existence of a novel class of neutral noble gas compounds, HNgBO, HNgOB, HNgAlO and HNgOAl (Ng = Xe and Rn), through the insertion of a Ng atom into the hydroxides of icosagens and their isomers, namely, HBO, HOB, HAlO and HOAl. Second-order Møller-Plesset perturbation theory (MP2), density functional theory (DFT), and coupled-cluster theory (CCSD(T))-based methods have been employed to investigate the structures, stabilities, energetics, harmonic vibrational frequencies, and charge distribution of the predicted molecules. The HXeBO, HXeOAl, HRnBO, HRnAlO and HRnOAl molecules are found to be thermodynamically stable with respect to all plausible 2-body and 3-body dissociation channels except the 2-body dissociation pathway, leading to the formation of global minimum products (Ng + HBO), (Ng + HOAl) and (Ng + HAlO). However, the very large activation energy barrier heights provide enough kinetic stability to the predicted metastable molecules, which in turn can prevent them from dissociating into the global minimum products. Between the HNgBO-HNgOB isomers, HNgBO is found to be more stable, where both HNgBO and the precursor molecule HBO are linear. On the other hand, HNgOAl is more stable between the HNgAlO-HNgOAl isomers, where the precursor molecule HOAl is bent and HNgOAl is linear in contradiction and in agreement with Walsh's rule, respectively. Moreover, in contrast to the more stable HNgBO case, where the Ng atom is bonded with the icosagen atom, in the more stable HNgOAl, the Ng atom is connected to the chalcogen atom. All the detailed aforementioned analyses concerning the predicted molecules clearly indicate that a strong covalent bond exists between the H and Ng atoms, while an ionic interaction is found between the Ng and B atoms in HNgBO and Ng and O atoms in the HNgOAl molecules. In addition, the charge distribution and atoms-in-molecules (AIM) analyses are in agreement with the above-mentioned conclusion and also suggest that the predicted metastable HNgBO and HNgOAl molecules should essentially exist in the form of [HNg]+[BO]- and [HNg]+[OAl]-, respectively. All the calculated results reported in this work indicate that it might be possible to prepare and characterize the predicted molecules via suitable experimental technique(s) under cryogenic conditions.
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Affiliation(s)
- Ayan Ghosh
- Laser and Plasma Technology Division, Beam Technology Development Group, Bhabha Atomic Research Centre, Mumbai 400 085, India.
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Wen M, Li ZZ, Li AY. OBCN isomerization and noble gas insertion compounds of identical valence electron number species: stability and bonding. Phys Chem Chem Phys 2019; 21:26311-26323. [PMID: 31781710 DOI: 10.1039/c9cp04980k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of new noble gas (Ng) insertion compounds of the general type XNgX, XNgY and XNgY+ has been theoretically studied using ab initio and DFT methods herein. We first studied the isomerization process of the OBCN compound, and then investigated the bonding properties and stability of the compounds formed by inserting Ng into the single bond of the three low energy isomers by high-level ab initio calculations. The OBNgCN compounds are thermochemically stable with respect to all dissociation channels except for the processes of releasing OBCN/OBNC and free Ng. Furthermore, the two dissociation processes OBNgCN → Ng + OBNC and OBNgNC → Ng + OBCN are kinetically prohibited by the relatively high free energy barrier ranging from 22.7 to 31.7 kcal mol-1 except for the OBKrCN and OBKrNC analogues. And the adaptive natural density partitioning (AdNDP) analysis indicated that chemical bonding in OBNgCN compounds is realized via a delocalized 3-center 2-electron (3c-2e) σ-bond in the B-Ng-C moiety and a totally delocalized 5-center 2-electron (5c-2e) σ-bond in the whole O-B-Ng-C-N. Natural bond orbital (NBO) theory, atoms-in-molecules (AIM) and energy decomposition analysis (EDA) based on the molecular wavefunction revealed that the B-Ng bond and Ng-C bond have some covalent character in OBNgCN. In addition, the calculation and detailed bonding analysis on a large number of neutral and monocationic compounds with identical valence electron numbers to OBNgCN demonstrate that the two bonds directly linked to the Ng atoms have covalent properties in neutral compounds, whereas Ng forms one typical covalent bond and one partial covalent and partial ionic bond with the neighboring atoms in the monocationic compounds.
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Affiliation(s)
- Mei Wen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
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Karton A. Highly Accurate CCSDT(Q)/CBS Reaction Barrier Heights for a Diverse Set of Transition Structures: Basis Set Convergence and Cost-Effective Approaches for Estimating Post-CCSD(T) Contributions. J Phys Chem A 2019; 123:6720-6732. [DOI: 10.1021/acs.jpca.9b04611] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amir Karton
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
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