| 1. |
- 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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| 2. |
- Engdahl, Anders, et al.
(författare)
-
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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| 3. |
- Engdahl, Anders, et al.
(författare)
-
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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| 4. |
- 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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| 5. |
- Engdahl, Anders, et al.
(författare)
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Water-olefin complexes. : A matrix isolation study
- 1986
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Ingår i: Journal of Physical Chemistry. - : American Chemical Society (ACS). - 0022-3654 .- 1541-5740. ; 90:21, s. 4982-4987
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Tidskriftsartikel (refereegranskat)abstract
- The infrared spectra of the H2O, HDO, and D2O complexes with ethylene, propene, cis-2-butene, trans-2-butene, 2-methylpropene, 2-methyl-2-butene, 2,3-dimethyl-2-butene, 1,3-butadiene, benzene, and naphthalene have been recorded at temperatures from 11 to 20 K. Interaction energies have been estimated. HDO prefers to form a deuterium bond to the unsaturated molecule; however, small amounts of the hydrogen-bonded forms are present in thermal equilibrium with the deuterium-bonded forms. The energy difference between the hydrogen-bonded and deuterium-bonded forms has been estimated for most of the complexes.
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