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.

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.

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

Structure of the OH stretching vibrational band of formic acid

1976 ◽  
Vol 64 (5) ◽  
pp. 2192-2196 ◽  
Author(s):  
Hans Wolff ◽  
Harald Müller ◽  
Erika Wolff
Keyword(s):  
Formic Acid ◽  
Vibrational Band

Quantitative probing of subtle interactions among H-bonds in alpha hydroxy carboxylic acid complexes

2017 ◽  
Vol 19 (36) ◽  
pp. 24399-24411 ◽  
Author(s):  
Quanli Gu ◽  
Peifeng Su ◽  
Yong Xia ◽  
Zhijun Yang ◽  
Carl O. Trindle ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Formic Acid ◽  
Hydroxy Carboxylic Acid

The alpha OH stretching frequency may be affected upon complexing with water and formic acid.

The stereochemistry and regiochemistry of the Diels–Alder reactions of 6-acetoxy-2,6-dimethyl-2,4-cyclohexadienone

1981 ◽  
Vol 59 (16) ◽  
pp. 2510-2517 ◽  
Author(s):  
Hillar Auksi ◽  
Peter Yates
Keyword(s):  
Carboxylic Acid ◽  
Maleic Anhydride ◽  
Dicarboxylic Acid ◽  
Van Der Waals ◽  
Closed Shell ◽  
Diels Alder ◽  
Acid Anhydride ◽  
Propiolic Acid ◽  
High Stereoselectivity

6-Acetoxy-2,6-dimethyl-2,4-cyclohexadienone (1) and maleic anhydride in boiling benzene give a single adduct, exo-5-acetoxy-l,5-dimethyl-6-oxobicyclo[2.2.2]oct-7-ene-endo-2,3-dicarboxylic acid anhydride (2). With propiolic acid 1 gives exo-5-hydroxy-l,5-dimethyl-6-oxobicyclo[2.2.2]octa-2,7-diene-2-carboxylic acid (15). The high stereoselectivity and regioselectivity of these reactions is interpretable in terms of orbital overlap, closed-shell repulsion, steric, and van der Waals – London effects.

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