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Finkelstein Y, Nemirovsky D, Moreh R. Kinetic energy of oxygen atoms in water and in silica hydrogel. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Moid M, Finkelstein Y, Moreh R, Maiti PK. Microscopic Study of Proton Kinetic Energy Anomaly for Nanoconfined Water. J Phys Chem B 2019; 124:190-198. [DOI: 10.1021/acs.jpcb.9b08667] [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)
- Mohd Moid
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | | | - Raymond Moreh
- Physics Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Prabal K. Maiti
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
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Lacroix MR, Bukovsky EV, Lozinšek M, Folsom TC, Newell BS, Liu Y, Peryshkov DV, Strauss SH. Manifestations of Weak O-H···F Hydrogen Bonding in M(H 2O) n(B 12F 12) Salt Hydrates: Unusually Sharp Fourier Transform Infrared ν(OH) Bands and Latent Porosity (M = Mg-Ba, Co, Ni, Zn). Inorg Chem 2018; 57:14983-15000. [PMID: 30444604 DOI: 10.1021/acs.inorgchem.8b02786] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Eight M(H2O) n(Z) salt hydrates were characterized by single-crystal X-ray diffraction (Z2- = B12F122-): M = Ca, Sr, n = 7; M = Mg, Co, Ni, Zn, n = 6; M = Ba, n = 4, 5. Weak O-H···F hydrogen bonding between the M(H2O) n2+ cations and Z2- resulted in room-temperature Fourier transform infrared (FTIR) spectra having sharp ν(OH) bands, with full widths at half max of 10-30 cm-1, which are much more narrow than ν(OH) bands in room temperature FTIR spectra of most salt hydrates. Clearly resolved νasym(OH/OD) and νsym(OH/OD) bands with Δν(OH) as small as 17 cm-1 and Δν(OD) as small as 11 cm-1 were observed (Δν(OX) = νasym(OX) - νsym(OX)). The isomorphic hexahydrates ( R3̅) have two fac-(H2O)3 sets of H2O ligands and nearly octahedral coordination spheres. They exhibited four resolvable ν(OH) bands, one νasym(OH)/νsym(OH) pair for H2O ligands with longer O(H)···F distances and one νasym(OH)/νsym(OH) pair for H2O ligands with shorter O(H)···F distances. The ν(OH) bands for the three H2O molecules with shorter, slightly stronger O(H)···F hydrogen bonds were broader, more intense, and red-shifted by ca. 25 cm-1 relative to the bands for the three other H2O molecules, the first time that such small differences in relatively weak O(H)···F hydrogen bonds in the same crystalline hexahydrate have resulted in observable IR spectroscopic differences at room temperature. For the first time room temperature ν(OH) values for salt hexahydrates showed the monotonic progression Mg2+ > Co2+ > Ni2+ > Zn2+, essentially the same progression as the p Ka values for these metal ions in aqueous solution. A further manifestation of the weak O-H···F hydrogen bonding in these hydrates is the latent porosity exhibited by Ba(H2O)5,8(Z), Sr(H2O) n,m(Z), and Ca(H2O)4,6(Z). Finally, the H2O/D2O exchange reaction Co(D2O)6(Z) → Co(H2O)6(Z) was ca. 50% complete in 1 h at 50 °C in N2/17 Torr H2O( g).
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Affiliation(s)
- Matthew R Lacroix
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Eric V Bukovsky
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Matic Lozinšek
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States.,Department of Inorganic Chemistry and Technology , Jožef Stefan Institute , 1000 Ljubljana , Slovenia
| | - Travis C Folsom
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Brian S Newell
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Yong Liu
- Department of Chemistry , University of Colorado at Denver , Denver , Colorado 80000 , United States
| | - Dmitry V Peryshkov
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States.,Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , United States
| | - Steven H Strauss
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
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Belyanchikov MA, Zhukova ES, Tretiak S, Zhugayevych A, Dressel M, Uhlig F, Smiatek J, Fyta M, Thomas VG, Gorshunov BP. Vibrational states of nano-confined water molecules in beryl investigated by first-principles calculations and optical experiments. Phys Chem Chem Phys 2017; 19:30740-30748. [DOI: 10.1039/c7cp06472a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Using the DFT approach and optical spectroscopy, we provide a comprehensive analysis of IR excitation of water molecules confined in beryl nanopores.
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Affiliation(s)
- M. A. Belyanchikov
- Moscow Institute of Physics and Technology
- Dolgoprudny
- Moscow Region
- Russia
- 1. Physikalisches Institut
| | - E. S. Zhukova
- Moscow Institute of Physics and Technology
- Dolgoprudny
- Moscow Region
- Russia
| | - S. Tretiak
- Center for Integrated Nanotechnologies (CINT)
- Los Alamos National Laboratory
- Los Alamos
- USA
- Skolkovo Institute of Science and Technology
| | - A. Zhugayevych
- Skolkovo Institute of Science and Technology
- Moscow 143026
- Russia
| | - M. Dressel
- Moscow Institute of Physics and Technology
- Dolgoprudny
- Moscow Region
- Russia
- 1. Physikalisches Institut
| | - F. Uhlig
- Institute for Computational Physics
- Universität Stuttgart
- Germany
| | - J. Smiatek
- Institute for Computational Physics
- Universität Stuttgart
- Germany
| | - M. Fyta
- Institute for Computational Physics
- Universität Stuttgart
- Germany
| | - V. G. Thomas
- Sobolev Institute of Geology and Mineralogy
- RAS
- Russia
- Novosibirsk State University
- Novosibirsk 630090
| | - B. P. Gorshunov
- Moscow Institute of Physics and Technology
- Dolgoprudny
- Moscow Region
- Russia
- 1. Physikalisches Institut
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