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Okabayashi T, Nakane A, Kubota H, Mitani Y, Yamamoto T, Matsumoto S, Tanimoto M. Fourier transform microwave spectroscopy of AgCN and AuCN. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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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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Medcraft C, Bittner DM, Tew DP, Walker NR, Legon AC. Geometries of H2S⋯MI (M = Cu, Ag, Au) complexes studied by rotational spectroscopy: The effect of the metal atom. J Chem Phys 2016; 145:194306. [DOI: 10.1063/1.4967477] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Chris Medcraft
- School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne, Tyne and Wear NE1 7RU, United Kingdom
| | - Dror M. Bittner
- School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne, Tyne and Wear NE1 7RU, United Kingdom
| | - David P. Tew
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Nicholas R. Walker
- School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne, Tyne and Wear NE1 7RU, United Kingdom
| | - Anthony C. Legon
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
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Stephens SL, Tew DP, Walker NR, Legon AC. H3PAgI: generation by laser-ablation and characterization by rotational spectroscopy and ab initio calculations. Phys Chem Chem Phys 2016; 18:18971-7. [PMID: 27354204 PMCID: PMC5044702 DOI: 10.1039/c6cp03512d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 06/15/2016] [Indexed: 11/21/2022]
Abstract
The new compound H3PAgI has been synthesized in the gas phase by means of the reaction of laser-ablated silver metal with a pulse of gas consisting of a dilute mixture of ICF3 and PH3 in argon. Ground-state rotational spectra were detected and assigned for the two isotopologues H3P(107)AgI and H3P(109)AgI in their natural abundance by means of a chirped-pulse, Fourier-transform, microwave spectrometer. Both isotopologues exhibit rotational spectra of the symmetric-top type, analysis of which led to accurate values of the rotational constant B0, the quartic centrifugal distortion constants DJ and DJK, and the iodine nuclear quadrupole coupling constant χaa(I) = eQqaa. Ab initio calculations at the explicitly-correlated level of theory CCSD(T)(F12*)/aug-cc-pVDZ confirmed that the atoms PAg-I lie on the C3 axis in that order. The experimental rotational constants were interpreted to give the bond lengths r0(PAg) = 2.3488(20) Å and r0(Ag-I) = 2.5483(1) Å, in good agreement with the equilibrium lengths of 2.3387 Å and 2.5537 Å, respectively, obtained in the ab initio calculations. Measures of the strength of the interaction of PH3 and AgI (the dissociation energy De for the process H3PAgI = H3P + AgI and the intermolecular stretching force constant FPAg) are presented and are interpreted to show that the order of binding strength is H3PHI < H3PICl < H3PAgI for these metal-bonded molecules and their halogen-bonded and hydrogen-bonded analogues.
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Affiliation(s)
- Susanna L. Stephens
- School of Chemistry , Newcastle University , Bedson Building , Newcastle-upon-Tyne , NE1 7RU , UK .
| | - David P. Tew
- School of Chemistry , University of Bristol , Cantock's Close , Bristol , BS8 1TS , UK .
| | - Nicholas R. Walker
- School of Chemistry , Newcastle University , Bedson Building , Newcastle-upon-Tyne , NE1 7RU , UK .
| | - Anthony C. Legon
- School of Chemistry , University of Bristol , Cantock's Close , Bristol , BS8 1TS , UK .
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Bittner DM, Stephens SL, Zaleski DP, Tew DP, Walker NR, Legon AC. Gas phase complexes of H3N⋯CuF and H3N⋯CuI studied by rotational spectroscopy and ab initio calculations: the effect of X (X = F, Cl, Br, I) in OC⋯CuX and H3N⋯CuX. Phys Chem Chem Phys 2016; 18:13638-45. [DOI: 10.1039/c6cp01368f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexes of H3N⋯CuF and H3N⋯CuI have been synthesised in the gas phase and characterized by microwave spectroscopy.
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Affiliation(s)
- Dror M. Bittner
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
- UK
| | | | - Daniel P. Zaleski
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
- UK
| | - David P. Tew
- School of Chemistry
- University of Bristol
- Bristol
- UK
| | - Nicholas R. Walker
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne
- UK
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Evans CJ, Needham LME, Walker NR, Köckert H, Zaleski DP, Stephens SL. The pure rotational spectra of the open-shell diatomic molecules PbI and SnI. J Chem Phys 2015; 143:244309. [PMID: 26723673 DOI: 10.1063/1.4938247] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Pure rotational spectra of the ground electronic states of lead monoiodide and tin monoiodide have been measured using a chirped pulsed Fourier transform microwave spectrometer over the 7-18.5 GHz region for the first time. Each of PbI and SnI has a X (2)Π1/2 ground electronic state and may have a hyperfine structure that aids the determination of the electron electric dipole moment. For each species, pure rotational transitions of a number of different isotopologues and their excited vibrational states have been assigned and fitted. A multi-isotopologue Dunham-type analysis was carried out on both species producing values for Y01, Y02, Y11, and Y21, along with Λ-doubling constants, magnetic hyperfine constants and nuclear quadrupole coupling constants. The Born-Oppenheimer breakdown parameters for Pb have been evaluated and the parameter rationalized in terms of finite nuclear field effects. Analysis of the bond lengths and hyperfine interaction indicates that the bonding in both PbI and SnI is ionic in nature. Equilibrium bond lengths have been evaluated for both species.
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Affiliation(s)
- Corey J Evans
- Department of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom
| | - Lisa-Maria E Needham
- Department of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom
| | - Nicholas R Walker
- School of Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Hansjochen Köckert
- School of Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Daniel P Zaleski
- School of Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Susanna L Stephens
- School of Chemistry, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
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Santiago RT, Teodoro TQ, Haiduke RLA. The nuclear electric quadrupole moment of copper. Phys Chem Chem Phys 2014; 16:11590-6. [PMID: 24806277 DOI: 10.1039/c4cp00706a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nuclear electric quadrupole moment (NQM) of the (63)Cu nucleus was determined from an indirect approach by combining accurate experimental nuclear quadrupole coupling constants (NQCCs) with relativistic Dirac-Coulomb coupled cluster calculations of the electric field gradient (EFG). The data obtained at the highest level of calculation, DC-CCSD-T, from 14 linear molecules containing the copper atom give rise to an indicated NQM of -198(10) mbarn. Such result slightly deviates from the previously accepted standard value given by the muonic method, -220(15) mbarn, although the error bars are superimposed.
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Affiliation(s)
- Régis Tadeu Santiago
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador São-carlense, 400-CP 780, 13560-970-São Carlos, SP, Brazil.
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Cheng L, Stopkowicz S, Stanton JF, Gauss J. The route to high accuracy inab initiocalculations of Cu quadrupole-coupling constants. J Chem Phys 2012; 137:224302. [DOI: 10.1063/1.4767767] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Riaz SZ, Stephens SL, Mizukami W, Tew DP, Walker NR, Legon AC. H2S⋯Ag–I synthesized by a laser-ablation method and identified by its rotational spectrum. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.01.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Srebro M, Autschbach J. Does a Molecule-Specific Density Functional Give an Accurate Electron Density? The Challenging Case of the CuCl Electric Field Gradient. J Phys Chem Lett 2012; 3:576-581. [PMID: 26286152 DOI: 10.1021/jz201685r] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In the framework of determining system-specific long-range corrected density functionals, the question is addressed whether such functionals, tuned to satisfy the condition -ε(HOMO) = IP or other energetic criteria, provide accurate electron densities. A nonempirical physically motivated two-dimensional tuning of range-separated hybrid functionals is proposed and applied to the particularly challenging case of a molecular property that depends directly on the ground-state density: the copper electric field gradient (EFG) in CuCl. From a continuous range of functional parametrizations that closely satisfy -ε(HOMO) = IP and the correct asymptotic behavior of the potential, the one that best fulfills the straight-line behavior of E(N), the energy as a function of a fractional electron number N, was found to provide the most accurate electron density as evidenced by calculated EFGs. The functional also performs well for related Cu systems.
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Affiliation(s)
- Monika Srebro
- †Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
- ‡Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-060 Krakow, Poland
| | - Jochen Autschbach
- †Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
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Stephens SL, Mizukami W, Tew DP, Walker NR, Legon AC. Molecular geometry of OC⋅⋅⋅AgI determined by broadband rotational spectroscopy andab initiocalculations. J Chem Phys 2012; 136:064306. [DOI: 10.1063/1.3683221] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Bizzocchi L, Giuliano BM, Grabow JU. Hyperfine constants, nuclear magnetic shielding and spin–spin coupling parameters for AgI and CuI. J Mol Struct 2007. [DOI: 10.1016/j.molstruc.2006.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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OCCuI synthesized by reaction of laser-ablated Cu with a CH3I/CO/Ar mixture and characterised by pulsed-jet, Fourier-transform microwave spectroscopy. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.02.059] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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