Far infrared spectra of (HF)2 and (HF)3 in solid argon

Lester Andrews; Steven R. Davis; Rodney D. Hunt

doi:10.1080/00268979200102931

Far infrared spectra of (HF)₂ and (HF)₃ in solid argon

Lester Andrews, Steven R. Davis, Rodney D. Hunt

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

Hydrogen fluoride dimers and trimers have been examined by Fourier transform infrared spectroscopy down to 80 cm^-1 in sofid argon samples. A weak new 128cm^-1 absorption followed the 189 and 400cm^-1 (HF)₂ bands on annealing and is assigned to the hydrogen bond stretching fundamental in solid argon. A similar 124cm^-1 band was associated with 162 and 300cm^-1 (DF)₂ bands on annealing and is assigned to the deuterium bond stretching fundamental. This assignment is in agreement with very recent potential surface calculations and deductions (125 ± 5 cm -1) from other gas phase absorption of (HF)₂. A sharp new 152·5 cm^-l band was associated with the 446 and 560 cm^-1 (HF)₃ bands on annealing and is assigned to the antisymmetric hydrogen bond stretching fundamental in cyclic (HF)₃ in solid argon. The blue shift to 155·5 cm^-1 for cyclic (DF)₃ provides evidence of slightly stronger deuterium bonding in the cyclic trimer.

Original language	English
Pages (from-to)	993-1003
Number of pages	11
Journal	Molecular Physics
Volume	77
Issue number	5
DOIs	https://doi.org/10.1080/00268979200102931
State	Published - Dec 10 1992
Externally published	Yes

Funding

We gratefully acknowledge support for this work from National Science Foundation Grants CHE 82-17749, 85-16611, and 91-22556.

Funders	Funder number
National Science Foundation	85-16611, 91-22556, CHE 82-17749

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Access to Document

10.1080/00268979200102931

Cite this

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title = "Far infrared spectra of (HF)2 and (HF)3 in solid argon",

abstract = "Hydrogen fluoride dimers and trimers have been examined by Fourier transform infrared spectroscopy down to 80 cm-1 in sofid argon samples. A weak new 128cm-1 absorption followed the 189 and 400cm-1 (HF)2 bands on annealing and is assigned to the hydrogen bond stretching fundamental in solid argon. A similar 124cm-1 band was associated with 162 and 300cm-1 (DF)2 bands on annealing and is assigned to the deuterium bond stretching fundamental. This assignment is in agreement with very recent potential surface calculations and deductions (125 ± 5 cm -1) from other gas phase absorption of (HF)2. A sharp new 152·5 cm-l band was associated with the 446 and 560 cm-1 (HF)3 bands on annealing and is assigned to the antisymmetric hydrogen bond stretching fundamental in cyclic (HF)3 in solid argon. The blue shift to 155·5 cm-1 for cyclic (DF)3 provides evidence of slightly stronger deuterium bonding in the cyclic trimer.",

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T1 - Far infrared spectra of (HF)2 and (HF)3 in solid argon

AU - Andrews, Lester

AU - Davis, Steven R.

AU - Hunt, Rodney D.

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Y1 - 1992/12/10

N2 - Hydrogen fluoride dimers and trimers have been examined by Fourier transform infrared spectroscopy down to 80 cm-1 in sofid argon samples. A weak new 128cm-1 absorption followed the 189 and 400cm-1 (HF)2 bands on annealing and is assigned to the hydrogen bond stretching fundamental in solid argon. A similar 124cm-1 band was associated with 162 and 300cm-1 (DF)2 bands on annealing and is assigned to the deuterium bond stretching fundamental. This assignment is in agreement with very recent potential surface calculations and deductions (125 ± 5 cm -1) from other gas phase absorption of (HF)2. A sharp new 152·5 cm-l band was associated with the 446 and 560 cm-1 (HF)3 bands on annealing and is assigned to the antisymmetric hydrogen bond stretching fundamental in cyclic (HF)3 in solid argon. The blue shift to 155·5 cm-1 for cyclic (DF)3 provides evidence of slightly stronger deuterium bonding in the cyclic trimer.

AB - Hydrogen fluoride dimers and trimers have been examined by Fourier transform infrared spectroscopy down to 80 cm-1 in sofid argon samples. A weak new 128cm-1 absorption followed the 189 and 400cm-1 (HF)2 bands on annealing and is assigned to the hydrogen bond stretching fundamental in solid argon. A similar 124cm-1 band was associated with 162 and 300cm-1 (DF)2 bands on annealing and is assigned to the deuterium bond stretching fundamental. This assignment is in agreement with very recent potential surface calculations and deductions (125 ± 5 cm -1) from other gas phase absorption of (HF)2. A sharp new 152·5 cm-l band was associated with the 446 and 560 cm-1 (HF)3 bands on annealing and is assigned to the antisymmetric hydrogen bond stretching fundamental in cyclic (HF)3 in solid argon. The blue shift to 155·5 cm-1 for cyclic (DF)3 provides evidence of slightly stronger deuterium bonding in the cyclic trimer.

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