Ammonium dynamics in the ordered and disordered phases of K1−x(NH4)x SCN solid solutions

Natkaniec, I.; Smirnov, L. S.; Соловьев, А.И.

doi:10.1016/0921-4526(95)00244-4

Cited by 4 publications

(4 citation statements)

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“…We can also approximately estimate the relative amplitudes of phonon density (r s (DE)) from far IR (THz) or Raman or neutron scattering measurements. 53 In the D 2 O and DMF KSCN solutions, the absorbance from 40 cm À1 to 80 cm À1 increases slightly in a continuous way. These are the absorption of the solvents.…”

Section: Vibrational Energy Transfers In Aqueous Solutionsmentioning

confidence: 94%

“…Substituting the energy transfer rate constants and energy gaps into eqn (5), we obtain V = 4.1 cm À1 and t À1 = 15 cm À1 . With these two constants, 53 The two semitransparent columns indicate the two energy gaps 48 cm À1 and 75 cm À1 .…”

Section: Vibrational Energy Transfers In Aqueous Solutionsmentioning

confidence: 99%

“…2B) in KSCN/ KS 13 C 15 N crystals of which the energy donor-acceptor (anions) distances 40 have been well characterized with XRD and neutron diffraction methods. 53,55 The closest anion distance in the KSCN crystal is determined to be 3.9 AE 0.3 Å from the measured resonant energy transfer time constant and eqn ( 5) and ( 26). This value is the same as 4.0 Å that is determined by XRD.…”

Section: Resonant and Nonresonant Energy Transfers In Dmf Solutionsmentioning

confidence: 99%

“…The results show that the isotope labeling doesn't change the phonon modes; and (C) the neutron scattering data of crystalline KSCN at 10 K in the frequency range of 20-100 cm À1 . The neutron scattering data are obtained from literature 53. The two semitransparent columns indicate the two energy gaps 48 cm À1 and 75 cm À1 .…”

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Intermolecular vibrational energy transfers in liquids and solids

Chen

Wen

Guo

et al. 2014

Phys. Chem. Chem. Phys.

144

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Resonant and nonresonant intermolecular vibrational energy transfers in KSCN/KSC(13)N/KS(13)C(15)N aqueous and DMF solutions and crystals are studied. Both energy-gap and temperature dependent measurements reveal some surprising results, e.g. inverted energy-gap dependent energy transfer rates and opposite temperature dependences of resonant and nonresonant energy transfer rates. Two competing mechanisms are proposed to be responsible for the experimental observations. The first one is the dephasing mechanism in which the measured energy transfer rate originates from the dephasing of the energy donor-acceptor coherence, and the second one is the phonon-compensation mechanism derived from the second order perturbation. It is found that both the nonresonant energy transfers in the liquids and resonant energy transfers in both liquids and solids can be well described by the first mechanism. The second mechanism explains the nonresonant energy transfers in one series of the solid samples very well.

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Section: Vibrational Energy Transfers In Aqueous Solutionsmentioning

confidence: 94%

Section: Vibrational Energy Transfers In Aqueous Solutionsmentioning

confidence: 99%

Section: Resonant and Nonresonant Energy Transfers In Dmf Solutionsmentioning

confidence: 99%

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confidence: 99%

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