High resolution near-infrared electronic spectroscopy of HCBr

Bor Chen Chang; Trevor J. Sears

doi:10.1063/1.472086

High resolution near-infrared electronic spectroscopy of HCBr

Bor Chen Chang, Trevor J. Sears

Department of Chemistry

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

20 Scopus citations

Abstract

The rotationally resolved spectrum of the HCBr Ã ¹A″(0,2,0)←X̃ ¹A′(0,0,0) K_a = 0←1 transition between 12760 and 12850 cm^-1 was obtained for the first time at Doppler-limited resolution using a transient frequency-modulation absorption technique. Rotational structure of HC ⁷⁹Br and HC ⁸¹Br was identified and analyzed. The analysis shows R″(C-Br)=1.85₂ Å and R′'(C-Br)=1.74₉ Å. The observed band indicates a linear-bent transition. This yields an upper limit of approximately 1600 cm^-1 for the barrier to linearity above the zero-point energy for the Ã ¹A″ state. Perturbations caused by singlet-triplet interactions were also found in the observed spectrum. The analysis of these perturbations indicates a very low-lying ã³A″ state.

Original language	English
Pages (from-to)	2135-2140
Number of pages	6
Journal	Journal of Chemical Physics
Volume	105
Issue number	6
DOIs	https://doi.org/10.1063/1.472086
State	Published - 8 Aug 1996

Access to Document

10.1063/1.472086

Cite this

@article{59b7531c514b4baf89c8310305290d1b,

title = "High resolution near-infrared electronic spectroscopy of HCBr",

abstract = "The rotationally resolved spectrum of the HCBr {\~A} 1A″(0,2,0)←{\~X} 1A′(0,0,0) Ka = 0←1 transition between 12760 and 12850 cm-1 was obtained for the first time at Doppler-limited resolution using a transient frequency-modulation absorption technique. Rotational structure of HC 79Br and HC 81Br was identified and analyzed. The analysis shows R″(C-Br)=1.852 {\AA} and R′'(C-Br)=1.749 {\AA}. The observed band indicates a linear-bent transition. This yields an upper limit of approximately 1600 cm-1 for the barrier to linearity above the zero-point energy for the {\~A} 1A″ state. Perturbations caused by singlet-triplet interactions were also found in the observed spectrum. The analysis of these perturbations indicates a very low-lying {\~a}3A″ state.",

author = "Chang, {Bor Chen} and Sears, {Trevor J.}",

year = "1996",

month = aug,

day = "8",

doi = "10.1063/1.472086",

language = "???core.languages.en_GB???",

volume = "105",

pages = "2135--2140",

journal = "Journal of Chemical Physics",

issn = "0021-9606",

number = "6",

}

TY - JOUR

T1 - High resolution near-infrared electronic spectroscopy of HCBr

AU - Chang, Bor Chen

AU - Sears, Trevor J.

PY - 1996/8/8

Y1 - 1996/8/8

N2 - The rotationally resolved spectrum of the HCBr Ã 1A″(0,2,0)←X̃ 1A′(0,0,0) Ka = 0←1 transition between 12760 and 12850 cm-1 was obtained for the first time at Doppler-limited resolution using a transient frequency-modulation absorption technique. Rotational structure of HC 79Br and HC 81Br was identified and analyzed. The analysis shows R″(C-Br)=1.852 Å and R′'(C-Br)=1.749 Å. The observed band indicates a linear-bent transition. This yields an upper limit of approximately 1600 cm-1 for the barrier to linearity above the zero-point energy for the Ã 1A″ state. Perturbations caused by singlet-triplet interactions were also found in the observed spectrum. The analysis of these perturbations indicates a very low-lying ã3A″ state.

AB - The rotationally resolved spectrum of the HCBr Ã 1A″(0,2,0)←X̃ 1A′(0,0,0) Ka = 0←1 transition between 12760 and 12850 cm-1 was obtained for the first time at Doppler-limited resolution using a transient frequency-modulation absorption technique. Rotational structure of HC 79Br and HC 81Br was identified and analyzed. The analysis shows R″(C-Br)=1.852 Å and R′'(C-Br)=1.749 Å. The observed band indicates a linear-bent transition. This yields an upper limit of approximately 1600 cm-1 for the barrier to linearity above the zero-point energy for the Ã 1A″ state. Perturbations caused by singlet-triplet interactions were also found in the observed spectrum. The analysis of these perturbations indicates a very low-lying ã3A″ state.

UR - http://www.scopus.com/inward/record.url?scp=0030575475&partnerID=8YFLogxK

U2 - 10.1063/1.472086

DO - 10.1063/1.472086

M3 - 期刊論文

AN - SCOPUS:0030575475

SN - 0021-9606

VL - 105

SP - 2135

EP - 2140

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

IS - 6

ER -

High resolution near-infrared electronic spectroscopy of HCBr

Abstract

Access to Document

Fingerprint

Cite this