Results 271 to 280 of about 186,089 (306)

13C NMR, 1H NMR and IR spectra of a series of monochloroesters of aliphatic short chain carboxylic acids

Tetrahedron, 1981
Abstract 13 C chemical shifts for 14 isomeric monochloroesters of aliphatic carboxylic acids from propanoic acid to hexanoic acid have been determined. Comparisons are made with the literature values for methyl monochloro-octanoate isomers. Substituent effects for all positions are given.
Maija T. Pitkänen, Ilpo O.O. Korhonen, Jorma N.J. Korvola   +2 more
openaire   +1 more source

Experimental and theoretical studies on compositions, structures, and IR and NMR spectra of functionalized protic ionic liquids

Physical Chemistry Chemical Physics, 2016
DMCEAP and DMEOAP are composed of neutral and ionized species in the liquid phase as investigated through experimental spectroscopy and DFT calculations.
Yingna, Cui, Jingmei, Yin, Changping, Li, Shenmin, Li, Ailing, Wang, Guang, Yang, Yingping, Jia   +6 more
openaire   +2 more sources

Tautomerism, normal coordinate analysis, vibrational assignments, calculated IR, Raman and NMR spectra of adenine

Journal of Molecular Structure, 2009
Abstract The Raman (3700–100 cm−1), infrared (4000–200 cm−1), mass spectrum and 1H NMR temperature-dependent study of adenine have been recorded. Quantum chemical calculations were carried out for N(9)H-amino, N(7)H-amino, N(9)H-imino and N(7)H-imino adenine tautomers using RHF, B3LYP and MP2 with full electron correlation up to 6-311++G(d,p) basis ...
Tarek A. Mohamed, Ibrahim A. Shabaan, Wajdi M. Zoghaib, John Husband, Rabei S. Farag, Abd El-Nasser M.A. Alajhaz   +5 more
openaire   +1 more source

Coordination Properties of Magnesium in Chlorophyll from IR and NMR Spectra

1968
The infrared (IR) and nuclear magnetic resonance (NMR) spectra of chlorophyll are best interpreted on the basis that the central magnesium atom of the chlorophyll always has a coordination number larger than 4. In electron-donor solvents, chlorophyll exists as monomer, with solvent molecules filling the axial position(s).
openaire   +1 more source

Hydrogen bonding of N-methylacetamide in CDCl3 solution studied by NMR and IR spectra

Spectrochimica Acta Part A: Molecular Spectroscopy, 1994
Abstract The amide proton NMR chemical shifts have been widely used for the determination of the population fraction of the non-hydrogen-bonded states in studies of hydrogen bonding in peptides and proteins. However, in such works the determination of the limiting chemical shifts for the fully hydrogen-bonded state and for the non-hydrogen-bonded ...
Minoru Akiyama, Toshiaki Ohtani
openaire   +1 more source

Solid-state NMR spectroscopy

Nature Reviews Methods Primers, 2021
Bernd Reif, Sharon E Ashbrook, Lyndon Emsley   +2 more
exaly  

Primary Structure of Glycans by NMR Spectroscopy

Chemical Reviews, 2023
Göran Widmalm
exaly  

NMR MS IR spectra for PhD thesis: Synthesis and stabilisation of novel UV absorbers

2017
These are PhD thesis supplementary data including NMR, MS, IR spectra.The associated thesis can be found at: https://dspace.lboro.ac.uk/2134/24559. This is currently restricted.
openaire   +1 more source

IR and 1H NMR spectra, and structure of some N-acylpyridinium salts

Theoretical and Experimental Chemistry, 1978
V. I. Rybachenko, A. I. Kirichenko, D. P. Drizhd, A. Ya. Chervinskii, R. G. Semenova, E. V. Titov   +5 more
openaire   +1 more source

Characterization of NMR, IR, and Raman spectra for siloxanes and silsesquioxanes: a mini review

Journal of Sol-Gel Science and Technology, 2022
Yohei Sato, Ryohei Hayami, Takahiro Gunji   +2 more
openaire   +1 more source