Infrared Spectra of Difluoroborane and Difluoroborane-d

Gaseous H-BF2 and D-BF2 were obtained by a new method of preparation. Analysis of high-resolution ir spectra gave approximate values for the B-F distance (1.30±0.15 Å) and the F-B-F angle (120°±5°). Five of the six fundamentals were observed and assigned unambiguously: v2=2620 and 1962 cm-1, B-H and...

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Publicado: 1965
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219606_v43_n2_p721_Perec
http://hdl.handle.net/20.500.12110/paper_00219606_v43_n2_p721_Perec
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00219606_v43_n2_p721_Perec
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spelling paper:paper_00219606_v43_n2_p721_Perec2023-06-08T14:44:34Z Infrared Spectra of Difluoroborane and Difluoroborane-d Gaseous H-BF2 and D-BF2 were obtained by a new method of preparation. Analysis of high-resolution ir spectra gave approximate values for the B-F distance (1.30±0.15 Å) and the F-B-F angle (120°±5°). Five of the six fundamentals were observed and assigned unambiguously: v2=2620 and 1962 cm-1, B-H and B-D stretches; v1 =1166 and 1128 cm-1, 11B-F symmetric stretches in H-BF2 and D-BF2; v3 = 545 and 540 cm-1, F-11B-F bending in H-BF2 and D-BF2; and v4=1402, 1392, 1419 cm-1, 11B-F asymmetric stretches in H-BF2 and D- 11BF2 and 10B-F stretch in D- 10BF2, respectively; v6=944, 924, 810, 790 cm-1, out-of-plane deformation in H-10BF2, H-11BF2, D-10BF2, and D- 11BF2, respectively. The H-B-F bendmg appears to have a frequency v5 = 1200 cm-1 for H-11BF2 and is estimated at 887 cm-1 for D-11BF2. A force-constant calculation was made, obtaining the following values (in millidynes per angstrom) fD = 3.66, fd= 6.625, f d′ = 0.725, fDd = 0.37, fr = 0.772. 1965 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219606_v43_n2_p721_Perec http://hdl.handle.net/20.500.12110/paper_00219606_v43_n2_p721_Perec
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Gaseous H-BF2 and D-BF2 were obtained by a new method of preparation. Analysis of high-resolution ir spectra gave approximate values for the B-F distance (1.30±0.15 Å) and the F-B-F angle (120°±5°). Five of the six fundamentals were observed and assigned unambiguously: v2=2620 and 1962 cm-1, B-H and B-D stretches; v1 =1166 and 1128 cm-1, 11B-F symmetric stretches in H-BF2 and D-BF2; v3 = 545 and 540 cm-1, F-11B-F bending in H-BF2 and D-BF2; and v4=1402, 1392, 1419 cm-1, 11B-F asymmetric stretches in H-BF2 and D- 11BF2 and 10B-F stretch in D- 10BF2, respectively; v6=944, 924, 810, 790 cm-1, out-of-plane deformation in H-10BF2, H-11BF2, D-10BF2, and D- 11BF2, respectively. The H-B-F bendmg appears to have a frequency v5 = 1200 cm-1 for H-11BF2 and is estimated at 887 cm-1 for D-11BF2. A force-constant calculation was made, obtaining the following values (in millidynes per angstrom) fD = 3.66, fd= 6.625, f d′ = 0.725, fDd = 0.37, fr = 0.772.
title Infrared Spectra of Difluoroborane and Difluoroborane-d
spellingShingle Infrared Spectra of Difluoroborane and Difluoroborane-d
title_short Infrared Spectra of Difluoroborane and Difluoroborane-d
title_full Infrared Spectra of Difluoroborane and Difluoroborane-d
title_fullStr Infrared Spectra of Difluoroborane and Difluoroborane-d
title_full_unstemmed Infrared Spectra of Difluoroborane and Difluoroborane-d
title_sort infrared spectra of difluoroborane and difluoroborane-d
publishDate 1965
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219606_v43_n2_p721_Perec
http://hdl.handle.net/20.500.12110/paper_00219606_v43_n2_p721_Perec
_version_ 1768544441693372416

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