| 1. |
- Ceponkus, J., et al.
(författare)
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Structure and dynamics of small water clusters, trapped in inert matrices
- 2013
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Ingår i: Chemical Physics Letters. - : Elsevier BV. - 0009-2614. ; 581, s. 1-9
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Tidskriftsartikel (refereegranskat)abstract
- Recent matrix isolation (p-H-2, Ne, Ar, Kr) studies of water clusters made in Lund are reviewed. Gas phase positions of water cluster bands are estimated from matrix data. Intermolecular spectra of several isotopomers of the water dimer have been obtained, and approximate band strengths have been measured. Acceptor switching of the water dimer has been observed in matrices. A few intermolecular vibrations of (H2O)(3), (D2O)(3), (H2O)(4), and (D2O)(4) have been measured. The pseudorotation of the water trimer is not quenched in matrices, and pentamer pseudorotation appears to be fast as well. Spectra of partially deuterated water tetramers support a rigid cyclic tetramer structure. The hydrogen rotation in p-H-2 may interfere with guest vibrations at frequencies near the J = 2 <- J = 0 band of solid parahydrogen. (C) 2013 Elsevier B.V. All rights reserved.
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| 2. |
- Elmqvist, Carina, 1964-, et al.
(författare)
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”Vi vill ha en statlig nationell översikt över mobil vård”
- 2019
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Ingår i: Dagens medicin. - : Bonnier Business Media AB. - 1104-7488 .- 1402-1943. ; :2019-09-26
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Den mobila vården behöver definieras nationellt och bli en egen organisationsform och vårdnivå, skriver företrädare från Centrum för interprofessionell samverkan inom akut vård.
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| 3. |
- Engdahl, Anders, et al.
(författare)
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A 1 : 1 complex between a hydroxyl radical and ozone
- 2005
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Ingår i: Journal of Chemical Physics. - : AIP Publishing. - 0021-9606 .- 1089-7690. ; 122:12
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Tidskriftsartikel (refereegranskat)abstract
- A hydrogen bonded complex between a hydroxyl radical and ozone has been found in argon matrices at 9 K. The shift of the OH stretch (-12.6 cm(-1)) indicates that this complex is somewhat weaker than the OH-CO complex (-21.8 cm(-1), D-0<= 430 cm(-1), 1.2 kcal/mol).
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| 4. |
- Engdahl, Anders, et al.
(författare)
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Axial motion of water hydrogen halide and water halogen complexes in argon matrices
- 1986
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Ingår i: The Journal of chemical physics. - : AIP Publishing. - 0021-9606 .- 1089-7690. ; 84:4, s. 1981-1987
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Tidskriftsartikel (refereegranskat)abstract
- The infrared spectra of the water (H2O, HDO, D2O) complexes with HCl, HBr, HI Cl2, Br2, and I2 have been studied in argon matrices in the 11 to 25 K interval. In all cases, water acts as a lone-pair donor. The hydrogen halide complexes are effectively planar and rotate around the axis through the heavy atoms. For the water halogen complexes, the results are less clear, but a similar rotation, coupled to low wave number bending motions, seems possible.
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| 5. |
- Engdahl, Anders, et al.
(författare)
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Hydrogen iodide in argon matrices
- 1986
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Ingår i: Journal of Physical Chemistry. - : American Chemical Society (ACS). - 0022-3654 .- 1541-5740. ; 90:23, s. 6118-6121
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Tidskriftsartikel (refereegranskat)abstract
- The infrared spectra of HI and DI in argon matrices have been studied in the 11-25 K interval. The effects of concentration changes and of impurities have been investigated. Dimer and trimer bands have been assigned, as well as bands due to binary complexes with water, hydrogen bromide, hydrogen chloride, and atomic and molecular iodine.
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| 6. |
- Engdahl, Anders, et al.
(författare)
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On the relative stabilities of H- And D-bonded water dimers
- 1987
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Ingår i: The Journal of chemical physics. - : AIP Publishing. - 0021-9606 .- 1089-7690. ; 86:4, s. 1819-1823
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Tidskriftsartikel (refereegranskat)abstract
- The infrared spectra of water dimers formed from H2O, D 2O, and HDO in krypton matrices have been recorded. Thermal equilibria between H- and D-bonded dimers have been studied. D bonding is preferred, and H-bonded dimers are approximately 60 cm-1 less stable than D-bonded dimers. The energy difference seems to be due to the higher value of the intermolecular out-of-plane H-bond shear vibration compared to the corresponding D-bond vibration.
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| 7. |
- Engdahl, Anders, et al.
(författare)
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Structure of the bromovinyl radical : A matrix isolation study
- 1985
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Ingår i: Journal of the Chemical Society, Perkin Transactions 2. - 1472-779X. ; :11, s. 1747-1750
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Tidskriftsartikel (refereegranskat)abstract
- The bromovinyl radical has been prepared by the reaction of bromine atoms with acetylene in an argon matrix at 17 K and its i.r. spectrum has been studied. The spectrum of C2HDBr• shows the presence of two isomers, indicating that the radical has an unsymmetric structure.
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| 8. |
- Engdahl, Anders, et al.
(författare)
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The Binary Complex Between Hydrogen Peroxide and Ozone: A Matrix Isolation Study.
- 2003
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Ingår i: Chemical Physics. - 0301-0104. ; 293:2, s. 203-209
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Tidskriftsartikel (refereegranskat)abstract
- The interaction between hydrogen peroxide and ozone has been studied in argon matrices using infrared spectroscopy. The spectra show that hydrogen peroxide forms a weak hydrogen bond to one of the end oxygens of ozone. A comparison is made with other ozone complexes.
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| 9. |
- Engdahl, Anders, et al.
(författare)
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The HOOH-HOO complex. A matrix isolation study
- 2004
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Ingår i: Physical Chemistry Chemical Physics. - : Royal Society of Chemistry (RSC). - 1463-9084. ; 6:4, s. 730-734
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Tidskriftsartikel (refereegranskat)abstract
- The peroxy radical forms a cyclic complex with hydrogen peroxide, with both entities acting as hydrogen bond donors and as hydrogen bond acceptors. The strength of the complex is very similar to that of the hydrogen peroxide dimer.
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| 10. |
- Engdahl, Anders, et al.
(författare)
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The vibrational spectrum of H2O3.
- 2002
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Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 1095-9203 .- 0036-8075. ; 295:5554, s. 482-483
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Tidskriftsartikel (refereegranskat)abstract
- This report presents positive infrared spectroscopic identification of H2O3, a higher oxide of hydrogen of importance for the understanding of the chain formation ability of atomic oxygen and a possible intermediate in hydrogen oxygen radical chemistry. All fundamental vibrations of H2O3, isolated in an argon matrix, have been observed. In addition, several bands of HDO3, D2O3, and H2(16)O2(18)O have been measured. One particular mode, the antisymetric O-O stretch at 776 cm-1, should be observable even in the presence of high water concentrations.
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