Calculations and measurements of the deuterium tunneling frequency in the propiolic acid-formic acid dimer and description of a newly constructed Fourier transform microwave spectrometer

2013 ◽  
Vol 139 (8) ◽  
pp. 084316 ◽  
Author(s):  
Ming Sun ◽  
Yimin Wang ◽  
Spencer J. Carey ◽  
Erik G. Mitchell ◽  
Joel Bowman ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Formic Acid ◽  
Microwave Spectrometer ◽  
Propiolic Acid

Ground state molecular parameters of phosphine, PH3, from the simultaneous analysis of the high-resolution infrared, microwave and submillimeterwave spectra

1985 ◽  
Vol 50 (11) ◽  
pp. 2480-2492 ◽  
Author(s):  
Soňa Přádná ◽  
Dušan Papoušek ◽  
Jyrki Kauppinen ◽  
Sergei P. Belov ◽  
Andrei F. Krupnov ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Ground State ◽  
Unitary Transformation ◽  
Point Of View ◽  
Acoustic Detection ◽  
Molecular Parameters ◽  
Microwave Spectrometer ◽  
Fourier Transform Spectra ◽  
First Time

Fourier transform spectra of the ν2 band of PH3 have been remeasured with 0.0045 cm-1 resolution. Ground state combination differences from these data have been fitted simultaneously with the microwave and submillimeterwave data to determine the ground state spectroscopical parameters of PH3 including the parameters of the Δk = ± 3n interactions. The correlation between the latter parameters has been discussed from the point of view of the existence of two equivalent effective rotational operators which are related by a unitary transformation. The ΔJ = 0, +1, ΔK = 0 (A1 ↔ A2, E ↔ E) rotational transitions in the ν2 and ν4 states have been measured for the first time by using a microwave spectrometer and a radiofrequency spectrometer with acoustic detection.

scholarly journals CC-stretched formic acid: isomerisation, dimerisation, and carboxylic acid complexation

2021 ◽  
Author(s):  
Katharina A. E. Meyer ◽  
Arman Nejad
Keyword(s):  
Carboxylic Acid ◽  
Formic Acid ◽  
Vibrational Band ◽  
Propiolic Acid

The cis–trans-isomerism of the propiolic acid monomer (HCC–COOH) is examined with linear Raman jet spectroscopy, yielding the first environment-free vibrational band centres of a higher-energy cis-rotamer beyond formic acid (HCOOH) in addition to all fundamentals and a large number of hot and combination/overtone bands of the trans-conformer.

A rotational spectroscopic and ab initio study of cis and trans (-)-carveol: Further insights into conformational dynamics in monoterpenes and monoterpenoids

2021 ◽  
Author(s):  
Arsh Singh Hazrah ◽  
Mohamad al-Jabiri ◽  
Raiden Speelman ◽  
Wolfgang Jaeger
Keyword(s):  
Fourier Transform ◽  
Ab Initio ◽  
Conformational Dynamics ◽  
Ab Initio Study ◽  
Chirped Pulse ◽  
Rotational Spectra ◽  
Microwave Spectrometer ◽  
Cis And Trans

Broadband rotational spectra of cis- and trans- (-) carveol were recorded using a chirped pulse Fourier transform microwave spectrometer in the 2-6 GHz region. To aid in spectroscopic assignments a...

Observation of Carbonyl Fluoride, Ketene, Acetic Acid and Fluorocarbene Produced by an Electric Discharge within a Nozzle by Molecular Beam Fourier Transform Microwave Spectroscopy. A Reaction via a Cycloaddition for Carbonyl Fluoride and Keten?

2000 ◽  
Vol 55 (8) ◽  
pp. 695-705 ◽  
Author(s):  
D. H. Sutter ◽  
H. Dreizler
Keyword(s):  
Carbon Dioxide ◽  
Acetic Acid ◽  
Fourier Transform ◽  
Molecular Beam ◽  
Reaction Path ◽  
Microwave Spectroscopy ◽  
Electrical Discharges ◽  
Microwave Spectrometer ◽  
Precursor Molecules ◽  
Carbonyl Fluoride

Abstract A molecular beam Fourier transform microwave spectrometer, designed for the study of chemical reactions within electrical discharges, is described in detail. Applications include the production of carbonyl fluoride, ketene, acetic acid, and difluorocarbene. For the production of carbonyl fluoride and ketene with 1,1-difluoroethylene and carbon dioxide as precursor molecules a reaction path via a 2+2 cycloaddition is proposed.

Microwave Structure for the Propiolic Acid–Formic Acid Complex

2013 ◽  
Vol 117 (39) ◽  
pp. 9525-9530 ◽  
Author(s):  
Stephen G. Kukolich ◽  
Erik G. Mitchell ◽  
Spencer J. Carey ◽  
Ming Sun ◽  
Bryan A. Sargus
Keyword(s):  
Formic Acid ◽  
Acid Complex ◽  
Propiolic Acid

Nexafs Studies of Unsaturated Carboxylic Acids and Alcohols Adsorbed on the Si(111)(7×7) Surface

1986 ◽  
Vol 77 ◽  
Author(s):  
D. A. Outka ◽  
J. Stöhr ◽  
R. J. Madix ◽  
H. H. Rotermund ◽  
B. Hermsmeier ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Carboxylic Acid ◽  
Acrylic Acid ◽  
Formic Acid ◽  
Silicon Substrate ◽  
Silicon Surface ◽  
Alcohol Group ◽  
Triple Bonds ◽  
Unsaturated Carboxylic Acids ◽  
Propiolic Acid

ABSTRACTThe adsorption of formic acid (HCOOH), acrylic acid (CH2= CHCO2H), propiolic acid (HC=CCO2H), and the corresponding alcohols on the Si(111)(7×7) surface have been investigated by NEXAFS. In each case, well-defined dipole transitions to σ* and π* molecular orbital s were observed above the C and 0 K-edges and used to probe the orientation and chemistry of these molecules on this silicon surface. Monolayer coverages of these molecules on silicon, bond strongly to the silicon surface via the carboxylic acid or alcohol group. In contrast, the C-C double and triple bonds of these molecules do not react initially with the silicon surface. Upon heating, however, the C-C double and triple bonds which are held in proximity to the surface by the carboxylic acid or alcohol group, are lost either by polymerization on the surface or reaction with the silicon substrate. These results illustrate the capabilities of NEXAFS to investigate molecular orientations on surfaces and the electronic structure of polyatomic adsorbates.

A multioctave coaxially oriented beam‐resonator arrangement Fourier‐transform microwave spectrometer

1996 ◽  
Vol 67 (12) ◽  
pp. 4072-4084 ◽  
Author(s):  
Jens‐Uwe Grabow ◽  
Wolfgang Stahl ◽  
Helmut Dreizler
Keyword(s):  
Fourier Transform ◽  
Beam Resonator ◽  
Microwave Spectrometer

A portable, pulsed-molecular-beam, Fourier-transform microwave spectrometer designed for chemical analysis

1999 ◽  
Vol 70 (4) ◽  
pp. 2127-2135 ◽  
Author(s):  
R. D. Suenram ◽  
Jens Uwe Grabow ◽  
Andrei Zuban ◽  
Igor Leonov
Keyword(s):  
Fourier Transform ◽  
Chemical Analysis ◽  
Molecular Beam ◽  
Microwave Spectrometer

scholarly journals Global distribution of upper tropospheric formic acid from the ACE-FTS

2009 ◽  
Vol 9 (20) ◽  
pp. 8039-8047 ◽  
Author(s):  
G. González Abad ◽  
P. F. Bernath ◽  
C. D. Boone ◽  
S. D. McLeod ◽  
G. L. Manney ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Formic Acid ◽  
Atmospheric Chemistry ◽  
South American ◽  
Fourier Transform Spectrometer ◽  
Vegetation Growth ◽  
Solar Occultation ◽  
The Fourier Transform ◽  
Chemistry Experiment ◽  
Seasonal Dependence

Abstract. We present the first near global upper tropospheric distribution of formic acid (HCOOH) observed from space using solar occultation measurements from the Fourier transform spectrometer (FTS) on board the Atmospheric Chemistry Experiment (ACE) satellite. Using a new set of spectroscopic line parameters recently published for formic acid by Vander Auwera et al. (2007) and Perrin and Vander Auwera (2007), we have retrieved the concentrations of HCOOH between 5 km and the tropopause for ACE-FTS observations from February 2004 to September 2007. We observe a significant seasonal dependence for the HCOOH concentrations related to vegetation growth and biomass burning. We estimate an emission ratio of 0.0051±0.0015 for HCOOH relative to CO for tropical South American fires using a selected set of data for September 2004. Results from the balloon-borne MkIV Fourier transform spectrometer are also presented and compared with the ACE measurements.

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