Structure of 2-lithiophenyl tert-butyl thioether in solution and in the solid state. Detection of agostic lithium-hydrogen interactions by NMR spectroscopy

1988 ◽  
Vol 7 (2) ◽  
pp. 552-555 ◽  
Author(s):  
Walter. Bauer ◽  
P. A. A. Klusener ◽  
Sjoerd. Harder ◽  
J. A. Kanters ◽  
A. J. M. Duisenberg ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Tert Butyl ◽  
State Detection

Insight into the formation of the tert-butyl cation confined inside H-ZSM-5 zeolite from NMR spectroscopy and DFT calculations

2016 ◽  
Vol 52 (70) ◽  
pp. 10606-10608 ◽  
Author(s):  
Mengdi Huang ◽  
Qiang Wang ◽  
Xianfeng Yi ◽  
Yueying Chu ◽  
Weili Dai ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Dft Calculations ◽  
Solid State Nmr ◽  
Complex Structures ◽  
Tert Butyl ◽  
Zeolite P ◽  
Insight Into

Solid-state NMR experiments and DFT calculations have been carried out to determine the complex structures of coadsorbed 13C-labeled tert-butanol and NH3 in acidic H-ZSM-5 zeolite.

Optimized synthesis of a tert-butyl-phenyl-substituted tetrapyridophenazine ligand and its Ru(ii) complexes and determination of dimerization behaviour of the complexes through supramolecular “Fingerhakel”

2015 ◽  
Vol 44 (19) ◽  
pp. 8889-8905 ◽  
Author(s):  
K. Ritter ◽  
C. Pehlken ◽  
D. Sorsche ◽  
S. Rau
Keyword(s):  
Molecular Structure ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Ruthenium Complex ◽  
Dimerization Constant ◽  
Π Interactions ◽  
Tert Butyl ◽  
H Nmr

A high dimerization constant of a ruthenium complex is observed with the aid of 1H-NMR spectroscopy. The solid state molecular structure indicates that multiple π-interactions are the reason for strong dimerization.

scholarly journals Ambient-Temperature Synthesis of (E)-N-(3-(tert-Butyl)-1-methyl-1H-pyrazol-5-yl)-1-(pyridin-2-yl)methanimine

Molbank ◽  
10.3390/m1250 ◽  
2021 ◽  
Vol 2021 (3) ◽  
pp. M1250
Author(s):  
Diana Becerra ◽  
Justo Cobo ◽  
Juan-Carlos Castillo
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Ambient Temperature ◽  
Magnesium Sulfate ◽  
Elemental Analysis ◽  
Condensation Reaction ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
Temperature Synthesis ◽  
Tert Butyl

We report the ambient-temperature synthesis of novel (E)-N-(3-(tert-butyl)-1-methyl-1H-pyrazol-5-yl)-1-(pyridin-2-yl)methanamine 3 in 81% yield by a condensation reaction between 3-(tert-butyl)-1-methyl-1H-pyrazol-5-amine 1 and 2-pyridinecarboxaldehyde 2 in methanol using magnesium sulfate as a drying agent. The N-pyrazolyl imine 3 was full characterized by IR, 1D, and 2D NMR spectroscopy, mass spectrometry, and elemental analysis.

scholarly journals A New Methodological Approach to Correlate Protective and Microscopic Properties by Soft X-ray Microscopy and Solid State NMR Spectroscopy: The Case of Cusa’s Stone

2021 ◽  
Vol 11 (13) ◽  
pp. 5767
Author(s):  
Veronica Ciaramitaro ◽  
Alberto Spinella ◽  
Francesco Armetta ◽  
Roberto Scaffaro ◽  
Emmanuel Fortunato Gulino ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Methodological Approach ◽  
Polymer Chains ◽  
General Question ◽  
Protective Agent ◽  
Vapour Permeability ◽  
X Ray ◽  
Solid State Nmr Spectroscopy

Hydrophobic treatment is one of the most important interventions usually carried out for the conservation of stone artefacts and monuments. The study here reported aims to answer a general question about how two polymers confer different protective performance. Two fluorinated-based polymer formulates applied on samples of Cusa’s stone confer a different level of water repellence and water vapour permeability. The observed protection action is here explained on the basis of chemico-physical interactions. The distribution of the polymer in the pore network was investigated using scanning electron microscopy and X-ray microscopy. The interactions between the stone substrate and the protective agents were investigated by means of solid state NMR spectroscopy. The ss-NMR findings reveal no significant changes in the chemical neighbourhood of the observed nuclei of each protective agent when applied onto the stone surface and provide information on the changes in the organization and dynamics of the studied systems, as well as on the mobility of polymer chains. This allowed us to explain the different macroscopic behaviours provided by each protective agent to the stone substrate.

Unravelling the dissolution mechanism of polyphosphate glasses by 31P NMR spectroscopy: ligand competition and reactivity of intermediate complexes

2021 ◽  
Author(s):  
Dahiana Andrea Avila Salazar ◽  
Peter Bellstedt ◽  
Atsuhiro Miura ◽  
Yuki Oi ◽  
Toshihiro Kasuga ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Biomedical Applications ◽  
Structural Changes ◽  
31P Nmr ◽  
Dissolution Mechanism ◽  
31P Nmr Spectroscopy ◽  
Glass Dissolution ◽  
Polyphosphate Glasses

Phosphate glass dissolution can be tailored via compositional and subsequent structural changes, which is of interest for biomedical applications such as therapeutic ion delivery. Here, solid-state 31P nuclear magnetic resonance...

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