Results 31 to 40 of about 373,610 (343)

Solid State NMR Spectroscopy a Valuable Technique for Structural Insights of Advanced Thin Film Materials: A Review

open access: yesNanomaterials, 2021
Solid-state NMR has proven to be a versatile technique for studying the chemical structure, 3D structure and dynamics of all sorts of chemical compounds.
Mustapha El Hariri El Nokab   +1 more
doaj   +1 more source

Reorientational Dynamics and Solid-Phase Transformation of Ammonium Dicyanamide into Dicyandiamide [PDF]

open access: yes, 2007
The reorientational dynamics of ammonium dicyanamide ND4[N(C≡N)2] and the kinetics as well as the mechanism of the solid-state isomerization reaction from ammonium dicyanamide into dicyandiamide (N≡C-N=C(NH2)2) was studied by means of 2H and 14N solid ...
Lotsch, Bettina V.   +3 more
core   +1 more source

Biological Solid-state NMR at ETH Zurich

open access: yesCHIMIA, 2012
Solid-state Magnetic Resonance has been greatly developed over the past decade. Higher field spectrometers and other technical developments are expected to lead to further significant improvements.
Giorgia Zandomeneghi   +2 more
doaj   +1 more source

Asymmetrically Substituted Phospholes as Ligands for Coinage Metal Complexes

open access: yesMolecules, 2022
A series of coinage metal complexes asymmetrically substituted 2,5-diaryl phosphole ligands is reported. Structure, identity, and purity of all obtained complexes were corroborated with state-of-the-art techniques (multinuclear NMR, mass spectrometry ...
Fabian Roesler   +2 more
doaj   +1 more source

A 29Si, 1H, and 13C Solid-State NMR Study on the Surface Species of Various Depolymerized Organosiloxanes at Silica Surface

open access: yesNanoscale Research Letters, 2019
Three poly(organosiloxanes) (hydromethyl-, dimethyl-, and epoxymethylsiloxane) of different chain lengths and pendant groups and their mixtures of dimethyl (DMC) or diethyl carbonates (DEC) were applied in the modification of fumed silica nanoparticles ...
Iryna S. Protsak   +5 more
doaj   +1 more source

Pseudo-resonance structures in chiral alcohols and amines and their possible aggregation states

open access: yesFrontiers in Chemistry, 2022
We now report that some chiral compounds, like alcohols, which are not sterically hindered atropisomers nor epimer mixtures, exhibit two sets of simultaneous NMR spectra in CDCl3.
Huajie Zhu   +21 more
doaj   +1 more source

Solid-, Solution-, and Gas-state NMR Monitoring of 13C-Cellulose Degradation in an Anaerobic Microbial Ecosystem

open access: yesMolecules, 2013
Anaerobic digestion of biomacromolecules in various microbial ecosystems is influenced by the variations in types, qualities, and quantities of chemical components.
Yasuhiro Date   +4 more
doaj   +1 more source

The Solid State \u3csup\u3e13\u3c/sup\u3eC-NMR Spectra of Some Carbides [PDF]

open access: yes, 1978
The utility of NMR spectroscopy to the study of liquids or solids dissolved in liquids is well known. This technique has been used infrequently to studies in the solid state[I,2]. Work has been done on diamond, graphite and coa113-6].
Haworth, Daniel T., Wilkie, Charles A.
core   +1 more source

Magic angle spinning (MAS) NMR linewidths in the presence of solid-state dynamics [PDF]

open access: yes, 2008
In solid-state NMR, the magic angle spinning (MAS) technique fails to suppress anisotropic spin interactions fully if reorientational dynamics are present, resulting in a decay of the rotational-echo train in the time-domain signal. We show that a simple
Andrew   +19 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

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