Results 1 to 10 of about 66,832 (166)

Effects of Halogen, Chalcogen, Pnicogen, and Tetrel Bonds on IR and NMR Spectra [PDF]

open access: yesMolecules, 2019
Complexes were formed pairing FX, FHY, FH2Z, and FH3T (X = Cl, Br, I; Y = S, Se, Te; Z = P, As, Sb; T = Si, Ge, Sn) with NH3 in order to form an A⋯N noncovalent bond, where A refers to the central atom.
Jia Lu, Steve Scheiner
doaj   +6 more sources

IR-NMR multimodal computational spectra dataset for 177K patent-extracted organic molecules

open access: yesScientific Data
The construction of predictive models in molecular science increasingly relies on large, high-quality datasets. Synthetic data generation is becoming a foundational strategy for advancing model accuracy and enabling fast discovery workflows.
Federico Zipoli   +2 more
doaj   +3 more sources

Spectroscopic Studies of Delafloxacin Meglumine

open access: yesChinese Journal of Magnetic Resonance, 2021
The structure of delafloxacin meglumine was analyzed by infrared absorption (IR), ultraviolet absorption (UV), nuclear magnetic resonance (1H NMR, 13C NMR, DEPT, 1H-1H COSY, 1H-13C HSQC and 1H-13C HMBC) spectroscopy, mass spectrometry and elemental ...
Xin-yi ZHAO   +4 more
doaj   +1 more source

2-[Difluoro(phenylselenyl)methyl]benzo-1,3-thiazole

open access: yesMolbank, 2022
This short note elaborates a concise protocol for the synthesis of 2-[difluoro(phenylselenyl)methyl]benzo-1,3-thiazole in two steps from the commercially available reagent 2-aminobenzenethiol.
Rongfu Xu   +3 more
doaj   +1 more source

Spectral Analyses and Structural Elucidation of Cyflumetofen

open access: yesChinese Journal of Magnetic Resonance, 2020
Cyflumetofen is a new type of acaricide with high efficiency and low residue. In this work, the compound was characterized by infrared absorption (IR), ultraviolet absorption (UV) and mass spectrometry, as well as nuclear magnetic resonance spectroscopy (
ZHANG Yi-ming   +2 more
doaj   +1 more source

Structural and spectroscopic properties of voriconazole and fluconazole – Experimental and theoretical studies

open access: yesOpen Chemistry, 2022
The article compares the experimental Fourier transform-infrared, Ultraviolet-visible (UV-vis), and proton nuclear magnetic resonance (1H NMR) spectra of voriconazole and fluconazole with the density functional theory (DFT) calculations using five ...
Drabińska Beata   +6 more
doaj   +1 more source

Spectral Analysis and Structural Elucidation of Besifloxacin Hydrochloride

open access: yesChinese Journal of Magnetic Resonance, 2018
The ultraviolet spectra (UV), infrared spectra (IR), mass spectra (MS) and nuclear magnetic resonance (NMR) spectra (i.e., 1H NMR, 13C NMR, DEPT, HSQC, HMBC, COSY and NOESY) of besifloxacin hydrochloride were acquired and interpreted.
ZHANG Ming-guang   +4 more
doaj   +1 more source

Nuclear magnetic resonance and infrared spectra of Δ24- and C-24 saturated steroids

open access: yesJournal of Lipid Research, 1968
The infrared (IR) and nuclear magnetic resonance (NMR) spectra of eight Δ24-steroids and nine C-24 saturated steroids were examined. NMR spectra allow unambiguous assignment of the biologically important Δ24-bond; introduction of a Δ24-bond causes the ...
Terence J. Scallen, William Krueger
doaj   +1 more source

Synthesis and Characterization of Novel1,3,4,9a-Tetrahydrobenzo[e][1,3]oxazepin-5(5aH)-one Derivativesvia Cycloaddition Reactions ofSchiff Bases [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2016
A series of novel1,3,4,9a-tetrahydrobenzo[e][1,3]oxazepin-5(5aH)-one derivatives were synthesized by the reaction of Schiff bases with bicyclo]2.2.2[oct.7-ene-2,3,5,6-tetracarboxylic anhydridein anhydrous acetonitrile under dry and reflux conditionswith ...
Obaid H. Abid   +2 more
doaj   +1 more source

Spectral Analyses of a Novel Ibuprofen-Phillygenin Ester

open access: yesChinese Journal of Magnetic Resonance, 2018
An ibuprofen-phillygenin ester was synthesized through the Schotten-Baumann reaction with ibuprofen and phillygenin as the starting materials. Ultraviolet absorption (UV) spectrum, infrared absorption (IR) spectrum, matrix-assisted laser desorption ...
FAN Hong-yu
doaj   +1 more source

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