Results 11 to 20 of about 186,089 (306)

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

Impact of disorder on dynamics and ordering in the honeycomb-lattice iridate Na2IrO3 [PDF]

open access: yes, 2020
Kitaev's honeycomb spin-liquid model and its proposed realization in materials such as α-RuCl3, Li2IrO3, and Na2IrO3 continue to present open questions about how the dynamics of a spin liquid are modified in the presence of non-Kitaev interactions as ...
Analytis, JG   +7 more
core   +2 more sources

Spectral Analyses of Ecabet Sodium

open access: yesChinese Journal of Magnetic Resonance, 2018
Ultraviolet (UV) spectrum, infrared (IR) spectrum, high resolution-mass spectrum (HR-MS), nuclear magnetic resonance (NMR) spectra (i.e., 1H NMR, 13C NMR, DEPT, 1H-1H COSY, 1H-13C HSQC and 1H-13C HMBC) of ecabet sodium were collected and analyzed to ...
JI Xiao-long, YU Shui-tao, CHEN Zai-xin
doaj   +1 more source

Synthesis and Study of Olefin Metathesis Catalysts Supported by Redox-Switchable Diaminocarbene 3 Ferrocenophanes [PDF]

open access: yes, 2013
A redox-switchable ligand, N,N'-dimethyldiaminocarbene[3]ferrocenophane (5), was synthesized and incorporated into a series of Ir- and Ru-based complexes.
Bielawski, Christopher W.   +4 more
core   +1 more source

Spectroscopic and computational investigation of the structure and pharmacological activity of 1-benzylimidazole

open access: yesJournal of Taibah University for Science, 2017
The chemical and pharmacological activity of the compound 1-benzylimidazole was analysed using vibrational, NMR and UV-Visible spectroscopic tools. The necessary data were obtained by recording FT-IR, FT-Raman, NMR and UV-Visible spectra.
A. Madanagopal   +5 more
doaj   +1 more source

Electrochemical Behavior of bis((E) 3-(2-Nitrophenyl) Allylidene)Propane-1,2-Diamine as a New Schiff Base and Some Its New XII Group Complexes

open access: yesInternational Journal of Electrochemical Science, 2012
Synthesis, spectroscopic and electrochemical properties of some complexes of a new symmetric bidentate Schiff base ligand of bis((E) 3-(2-nitrophenyl)allylidene)propane-1,2-diamine (L) with a general formula of MLX2(M= Cd(II) and Hg(II); X= Cl-, Br-, -I,
Morteza Montazerozohori   +2 more
doaj   +1 more source

Comparative study of the vibrational optical activity techniques in structure elucidation : the case of galantamine [PDF]

open access: yes, 2019
The absolute configuration of the alkaloid galantamine was studied using a range of solution-state techniques; nuclear magnetic resonance (NMR), vibrational circular dichroism (VCD), and Raman optical activity (ROA). While the combined use of NMR and VCD
Bultinck, Patrick   +4 more
core   +2 more sources

Theoretical and experimental study of a new thiosulfonate derivative: Methyl trifluoromethanethiosulfonate, CF3SO2SCH3. Conformational transferability in CX3SO2S-R compounds [PDF]

open access: yes, 2017
Methyl trifluoromethanethiosulfonate, CF3SO2SCH3, was synthesized and characterized by 13C NMR, 19F NMR, and vibrational spectroscopy. This structural study was supported by MP2 and DFT (B3LYP and MPW1PW91) calculations, which revealed a strong ...
Ben Altabef, Aída   +5 more
core   +1 more source

Ab Inito Calculations on Adipic Acid

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2013
Geometric optimization, vibrational spectra and GIAO (gauge including atomic orbital) 13C NMR, 1H NMR chemical shift calculations were carried out by using Hartree-Fock (HF) method and density functional method (B3LYP) with the 6-31G(d) basis set.
Mustafa Çetin   +2 more
doaj   +1 more source

Synthesis and characterisation of ferrocenyl-phosphonic and -arsonic [PDF]

open access: yes, 2001
The ferrocene-derived acids FcCH₂CH₂E(O)(OH)₂ [4, E=P; 10, E=As; Fc=Fe(η₅-C₅H₅)(η⁵-C₅H₄)] have been synthesized by the reaction of FcCH₂CH₂Br with either P(OEt)₃ followed by hydrolysis, or with sodium arsenite followed by acidification.
Alley, Steven R., Henderson, William
core   +2 more sources

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