Laser spectroscopic and quantum chemical studies of the lowest excited states of formic acid

Journal Article · Wed Mar 21 23:00:00 EST 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100369a018· OSTI ID:6634836

Ioannoni, F; Moule, D C ^[1]; Clouthier, D J ^[2]

---

1. Brock Univ., St. Catharines, Ontario (Canada)
2. Univ. of Kentucky, Lexington (USA)

A fluorescence excitation spectrum of formic acid monomer (HCOOH) has been recorded in the 268-257-nm region and has been attributed to an n {yields} {pi}{sup *} electron promotion in the anti conformer. The S{sub 0} {l arrow} S{sub 1} electronic origins of the HCOOH/HCOOD/DCOOH/DCOOD isotopomers were assigned to weak bands observed at 37,431.5/37,461.5/37,445.5/37,479.3 cm{sup {minus}1}. Four vibrational modes, {nu}{sub 3}(C{double bond}O), {nu}{sub 7}(O-C{double bond}O), {nu}{sub 8}(C-H{sub ald}), and {nu}{sub 9}(O-H{sub hyd}), were observed in the spectrum.

• DOE Contract Number: FG05-86ER13544
• OSTI ID: 6634836
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:6; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CARBOXYLIC ACIDS
DATA
DATA ANALYSIS
ELECTROMAGNETIC RADIATION
EMISSION SPECTROSCOPY
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
FORMIC ACID
INFORMATION
LASER RADIATION
MEASURING INSTRUMENTS
MEASURING METHODS
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
RADIATIONS
SPECTROSCOPY