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Suckley AP, Tew DP, Legon AC. The rotational spectrum of H 2S⋯HI and an investigation by ab initio calculations of the origins of the observed doubling of rotational transitions in both H 2S⋯HI and H 2S⋯F 2. J Chem Phys 2020; 153:204301. [PMID: 33261470 DOI: 10.1063/5.0028222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The rotational spectrum of the complex H2S⋯HI observed with a pulsed-jet, Fourier-transform microwave spectrometer shows that each rotational transition is split into a closely spaced doublet, a pattern similar to that observed earlier for the halogen-bonded complex H2S⋯F2. The origin of the doubling has been investigated by means of ab initio calculations conducted at the CCSD(T)(F12*)/cc-pVDZ-F12 level. Two paths were examined by calculating the corresponding energy as a function of two angles. One path involved inversion of the configuration at S through a planar transition state of C2v symmetry via changes in the angle ϕ between the C2 axis of H2S and the line joining the H and I nuclei [the potential energy function V(ϕ)]. The other was a torsional oscillation θ about the local C2 axis of H2S that also exchanges the equivalent H nuclei [the potential energy function V(θ)]. The inversion path is slightly lower in energy and much shorter in arc length and is therefore the favored tunneling pathway. In addition, calculation of V(ϕ) for the series of hydrogen- and halogen-bonded complexes H2S⋯HX (X = F, Cl, or Br) and H2S⋯XY (XY = Cl2, Br2, ClF, BrCl, or ICl) at the same level of theory revealed that doubling is unlikely to be resolved in these, in agreement with experimental observations. The barrier heights of the V(ϕ) of all ten complexes examined were found to be almost directly proportional to the dissociation energies De.
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Affiliation(s)
- Andrew P Suckley
- Department of Chemistry, University of Exeter, Stocker Road, Exeter EX4 4QD, United Kingdom
| | - David P Tew
- Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Anthony C Legon
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
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Alkorta I, Elguero J, Trujillo C, Sánchez-Sanz G. Interaction between Trinuclear Regium Complexes of Pyrazolate and Anions, a Computational Study. Int J Mol Sci 2020; 21:E8036. [PMID: 33126636 PMCID: PMC7663457 DOI: 10.3390/ijms21218036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 01/27/2023] Open
Abstract
The geometry, energy and electron density properties of the 1:1, 1:2 and 1:3 complexes between cyclic (Py-M)3 (M = Au, Ag and Cu) and halide ions (F-, Cl- and Br-) were studied using Møller Plesset (MP2) computational methods. Three different configurations were explored. In two of them, the anions interact with the metal atoms in planar and apical dispositions, while in the last configuration, the anions interact with the CH(4) group of the pyrazole. The energetic results for the 1:2 and 1:3 complexes are a combination of the specific strength of the interaction plus a repulsive component due to the charge:charge coulombic term. However, stable minima structures with dissociation barriers for the anions indicate that those complexes are stable and (Py-M)3 can hold up to three anions simultaneously. A search in the CSD confirmed the presence of (Pyrazole-Cu)3 systems with two anions interacting in apical disposition.
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Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain;
| | - José Elguero
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain;
| | - Cristina Trujillo
- Trinity Biomedical Sciences Institute, School of Chemistry, Trinity Dublin College, D02 R590 Dublin 2, Ireland;
| | - Goar Sánchez-Sanz
- Irish Centre of High-End Computing, Grand Canal Quay, Dublin 2, Ireland
- School of Chemistry, University College Dublin, Belfield, D02 HP83 Dublin 4, Ireland
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Trujillo C, Sánchez-Sanz G, Elguero J, Alkorta I. The Lewis acidities of gold(I) and gold(III) derivatives: a theoretical study of complexes of AuCl and AuCl3. Struct Chem 2020. [DOI: 10.1007/s11224-020-01590-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tupikina EY, Denisov GS, Tolstoy PM. Anticooperativity of FH···Cl
−
hydrogen bonds in [FH)
n
Cl]
−
clusters (
n
= 1…6). J Comput Chem 2019; 40:2858-2867. [DOI: 10.1002/jcc.26066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/19/2019] [Accepted: 08/22/2019] [Indexed: 01/18/2023]
Affiliation(s)
- Elena Yu. Tupikina
- Institute of ChemistrySt. Petersburg State University, Universitetsky pr. 26, 198504 Russia
- Department of PhysicsSt. Petersburg State University Uljanovskaja 1 St. Petersburg 198504 Russia
| | - Gleb S. Denisov
- Department of PhysicsSt. Petersburg State University Uljanovskaja 1 St. Petersburg 198504 Russia
| | - Peter M. Tolstoy
- Institute of ChemistrySt. Petersburg State University, Universitetsky pr. 26, 198504 Russia
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Sánchez-Sanz G, Trujillo C, Alkorta I, Elguero J. Understanding Regium Bonds and their Competition with Hydrogen Bonds in Au 2 :HX Complexes. Chemphyschem 2019; 20:1572-1580. [PMID: 30974036 DOI: 10.1002/cphc.201900354] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Indexed: 01/08/2023]
Abstract
A theoretical study of the regium and hydrogen bonds (RB and HB, respectively) in Au2 :HX complexes has been carried out by means of CCSD(T) calculations. The theoretical study shows as overall outcome that in all cases the complexes exhibiting RB are more stable that those with HB. The binding energies for RB complexes range between -24 and -180 kJ ⋅ mol-1, whereas those of the HB complexes are between -6 and -19 kJ ⋅ mol-1 . DFT-SAPT also indicated that HB complexes are governed by electrostatics, but RB complexes present larger contribution of the induction term to the total attractive forces. 197 Au chemical shifts have been calculated using the relativistic ZORA Hamiltonian.
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Affiliation(s)
- Goar Sánchez-Sanz
- Irish Centre of High-End Computing, Grand Canal Quay, Dublin, 2, Ireland.,School of Chemistry, University College Dublin Belfield, Dublin, 4, Ireland
| | - Cristina Trujillo
- School of Chemistry, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse St., Dublin, 2, Ireland
| | - Ibon Alkorta
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006, Madrid, Spain
| | - José Elguero
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006, Madrid, Spain
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6
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Das A, Mandal PK, Lovas FJ, Medcraft C, Walker NR, Arunan E. The H
2
S Dimer is Hydrogen‐Bonded: Direct Confirmation from Microwave Spectroscopy. Angew Chem Int Ed Engl 2018; 57:15199-15203. [DOI: 10.1002/anie.201808162] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Arijit Das
- Inorganic and Physical Chemistry DepartmentIndian Institute of Science Bangalore 560012 India
| | - Pankaj K. Mandal
- Indian Institute of Science Education and Research, Pune Dr. HomiBhabha Road Pune 411008 India
| | - Frank J. Lovas
- Sensor Science DivisionNational Institute of Standards and Technology 100 Bureau Dr. Gaithersburg MD 20899-8441 USA
| | - Chris Medcraft
- Department of Physics and Astronomy, LaserLaBVU University de Boelelaan 1081 1081 HV Amsterdam The Netherlands
| | - Nicholas R. Walker
- Chemistry- School of Natural and Environmental SciencesNewcastle University Bedson Building Newcastle-upon-Tyne NE1 7RU UK
| | - Elangannan Arunan
- Inorganic and Physical Chemistry DepartmentIndian Institute of Science Bangalore 560012 India
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Das A, Mandal PK, Lovas FJ, Medcraft C, Walker NR, Arunan E. The H
2
S Dimer is Hydrogen‐Bonded: Direct Confirmation from Microwave Spectroscopy. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Arijit Das
- Inorganic and Physical Chemistry DepartmentIndian Institute of Science Bangalore 560012 India
| | - Pankaj K. Mandal
- Indian Institute of Science Education and Research, Pune Dr. HomiBhabha Road Pune 411008 India
| | - Frank J. Lovas
- Sensor Science DivisionNational Institute of Standards and Technology 100 Bureau Dr. Gaithersburg MD 20899-8441 USA
| | - Chris Medcraft
- Department of Physics and Astronomy, LaserLaBVU University de Boelelaan 1081 1081 HV Amsterdam The Netherlands
| | - Nicholas R. Walker
- Chemistry- School of Natural and Environmental SciencesNewcastle University Bedson Building Newcastle-upon-Tyne NE1 7RU UK
| | - Elangannan Arunan
- Inorganic and Physical Chemistry DepartmentIndian Institute of Science Bangalore 560012 India
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Legon AC, Walker NR. What's in a name? 'Coinage-metal' non-covalent bonds and their definition. Phys Chem Chem Phys 2018; 20:19332-19338. [PMID: 29993059 DOI: 10.1039/c8cp03432j] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Many complexes of the type BMX, (where B is a Lewis base such as H2, N2, ethyne, ethene, cyclopropane, H2O, H2S, PH3, or NH3, M is a coinage-metal atom Cu, Ag or Au, and X is a halogen atom) have now been characterised in the gas phase through their rotational spectra. It is pointed out that, for a given B, such complexes have angular geometries that are isomorphous with those of their hydrogen- and halogen-bonded counterparts BHX and BXY, respectively. Since the MX are, like the B, HX and XY referred to, closed-shell molecules, the complexes BMX also involve a non-covalent bond. Therefore, the name 'coinage-metal' bond is suggested for the non-covalent interaction in BMX, by analogy with hydrogen and halogen bonds. A generalised definition that covers all non-covalent bonds is also presented.
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Affiliation(s)
- Anthony C Legon
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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Medcraft C, Gougoula E, Bittner DM, Mullaney JC, Blanco S, Tew DP, Walker NR, Legon AC. Molecular geometries and other properties of H2O⋯AgI and H3N⋯AgI as characterised by rotational spectroscopy and ab initio calculations. J Chem Phys 2017; 147:234308. [DOI: 10.1063/1.5008744] [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)
- Chris Medcraft
- Chemistry-School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle-upon-Tyne NE1 7RU, United Kingdom
| | - Eva Gougoula
- Chemistry-School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle-upon-Tyne NE1 7RU, United Kingdom
| | - Dror M. Bittner
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, Virginia 23529-0126, USA
| | - John C. Mullaney
- Chemistry-School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle-upon-Tyne NE1 7RU, United Kingdom
| | - Susana Blanco
- Departamento de Quimica Fisica y Quimica Inorganica, Facultad de Ciencias, Universidad de Valladolid, 47011 Valladolid, Spain
| | - David P. Tew
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Nicholas R. Walker
- Chemistry-School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle-upon-Tyne NE1 7RU, United Kingdom
| | - Anthony C. Legon
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
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