The intramolecular S = O···H-O hydrogen bond in a chiral cyclic sulfite ester: How it affects the reaction behavior and spectral properties

2016 ◽  
Vol 191 (10) ◽  
pp. 1291-1296 ◽  
Author(s):  
Xiaoyun Hu ◽  
Dongzhi Chen ◽  
Jirong Lan ◽  
Zixing Shan
Keyword(s):  
Hydrogen Bond ◽  
Spectral Properties ◽  
Reaction Behavior ◽  
Cyclic Sulfite

The source of the differences in the IR spectral properties of the hydrogen bond in two isomeric thioamide crystals: Thioacetanilide and N-methylthiobenzamide

2015 ◽  
Vol 634 ◽  
pp. 113-117 ◽  
Author(s):  
Henryk T. Flakus ◽  
Barbara Hachuła ◽  
Edyta Turek ◽  
Anna Michta ◽  
Wioleta Śmiszek-Lindert ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Spectral Properties

Comparaison des approches empirique et chimiométrique dans la modélisation des effets de solvant. Cas des propriétés spectrales en RMN, IR et UV–visible

1991 ◽  
Vol 69 (7) ◽  
pp. 1084-1089 ◽  
Author(s):  
Abdelouahed Auhmani ◽  
Hassane Bitar ◽  
Roger Phan Tan Luu ◽  
Laura Barrios
Keyword(s):  
Hydrogen Bond ◽  
Solvent Effect ◽  
Key Words ◽  
Spectral Properties ◽  
Empirical Models ◽  
Empirical Approach ◽  
Orthogonal Parameters ◽  
Uv Visible ◽  
Main Components

In this paper, we review a comparison of the empirical and chemiometrical approaches to the modelization of the effects of solvent on a number of NMR, IR and UV–visible spectral properties. The solvents have first been characterized by the π*, α and β scales, which describe respectively the polarity–polarisability, the acidity, and the basicity by hydrogen bond; the 17 most representative, with orthogonal parameters, have been chosen. An attempt has been made to rationalize the observed effects on the observed properties by using simple linear empirical models like the π*, α, and β parameters of Kamlet, Taft, and Abboud; [Formula: see text] of Reichardt; and A and B of Swain. Furthermore, an analysis of the main components has been applied to these effects and to the properties examined; it appears that the quality of the correlations obtained is generally satisfactory and can be compared to the quality that can be observed with the empirical approach. Key words: solvent effect, empirical approach, chemiometrical approach. [Journal translation]

Novel Clathrate Materials for Hydrogen Storage: H2 Store in N2 Hydrate

2012 ◽  
Vol 512-515 ◽  
pp. 957-960
Author(s):  
Chang Ling Liu ◽  
Qing Guo Meng ◽  
Cheng Feng Li ◽  
Yu Guang Ye
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Storage ◽  
Gas Hydrates ◽  
Mild Condition ◽  
Molecular Hydrogen ◽  
Spectral Properties ◽  
Hydrogen Storage Materials ◽  
Water Network ◽  
Raman Spectrometry ◽  
Spectrometry Technique

In recent years, solid clathrate gas hydrates are considered to be promising materials for hydrogen storage because they can trap molecular hydrogen within their cages formed by a hydrogen-bond water network. In this paper, we firstly synthesized the nitrogen hydrates, and then used these hydrates for hydrogen storage. The H2 storage potential in these hydrates is investigated by Raman spectrometry technique. The spectral properties show that the multiple H2 occupancies of large cages of N2 hydrates have been realized under mild condition (16 MPa and 255 K) when exposing N2 hydrates in pressurized H2 gas. The results suggest that nitrogen clathrate hydrates are prospective media for H2 storage and may help to design and produce new hydrogen storage materials.

Primary aminomethyl derivatives of kaempferol: hydrogen bond-assisted synthesis, anticancer activity and spectral properties

2018 ◽  
Vol 16 (11) ◽  
pp. 1921-1931
Author(s):  
Shuanglian Cai ◽  
Yangyang Kong ◽  
Dan Xiao ◽  
Yun Chen ◽  
Qiuan Wang
Keyword(s):  
Hydrogen Bond ◽  
Anticancer Activity ◽  
Spectral Properties ◽  
Combination Strategy ◽  
Aminomethyl Derivatives ◽  
Derivatives Of

Primary aminomethyl derivatives of kaempferol with anticancer activity were synthesized by a combination strategy involving a hydrogen bond-assisted process.

How far can a single hydrogen bond tune the spectral properties of the GFP chromophore?

2015 ◽  
Vol 17 (31) ◽  
pp. 20056-20060 ◽  
Author(s):  
Hjalte V. Kiefer ◽  
Elie Lattouf ◽  
Natascha W. Persen ◽  
Anastasia V. Bochenkova ◽  
Lars H. Andersen
Keyword(s):  
Hydrogen Bond ◽  
Green Fluorescent Protein ◽  
Spectral Properties ◽  
Fluorescent Protein ◽  
Gfp Chromophore ◽  
Green Fluorescent ◽  
Hydrogen Bonded

Photoabsorption of the hydrogen-bonded HBDI·HBDI− dimer, simultaneously resembling the two states of the Green Fluorescent Protein chromophore, is measured in vacuum.

scholarly journals Synthesis, anticancer and FGFR1 inhibitory activity of isoindolo[2,1-a][1,2,4]triazino[2,3-c]quinazoline derivatives

2016 ◽  
Author(s):  
O. Yu. Voskoboynik ◽  
S. A. Starosyla ◽  
M. V. Protopopo ◽  
H. P. Volynets ◽  
S. V. Shyshkina ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Acetic Acid ◽  
Inhibitory Activity ◽  
Spectral Properties ◽  
Docking Study ◽  
Benzoic Acids ◽  
Low Field ◽  
Quinazoline Derivatives

Presented manuscript describes the synthesis, antitumor and FGFR1 inhibitory activity of novel isoindolo[2,1-a][1,2,4]triazino[2,3-c]quinazolines. It was shown that mentioned above substances may be prepared by interactionof 3-(2-amino-3-R2-5-R3-phenyl)-6-R1-1,2,4-triazin-5(2H)-ones with 2-formylbenzoic and 6-formyl-2,3-dimethoxybenzoic (opianic) acids in acetic acid. It was shown that proper 2-(2-oxo-3-R-6,7-dihydro-2H-[1,2,4]triazino[2,3-c]quinazolin-6-yl)benzoic acids (or corresponded dimethoxysubstituted analogues) may be considered as intermediates of thereaction. Spectral properties of synthesized compounds were studied, it was shown that protons in position 8 wereobserved at low field as result of the presence of hydrogen bond between hydrogen at position 8 and oxygen atposition 10. The anticancer assay data allowed to identify synthesized compounds as promising antitumor agents.The FGFR1 inhibitory activity of synthesized compounds was detected and docking study aimed to the evaluationof mentioned action was conducted.

HREM observations of internetallic alloy formation in Pt-Sn thin films

1992 ◽  
Vol 50 (1) ◽  
pp. 52-53
Author(s):  
D.C. Dufner
Keyword(s):  
Thin Films ◽  
Cross Sections ◽  
Carbon Films ◽  
Solid State Reactions ◽  
Alloy Formation ◽  
Reaction Behavior ◽  
Interdiffusion Process ◽  
Compositional Changes ◽  
General Goal ◽  
Film Method

The general goal of this research is to clarify mechanisms of solid state reactions at the atomic level as a step in the rationalization of macroscopic reaction behavior in solids. A study of intermetallic alloy formation resulting from interdiffusion of metals in thin films can be made by HREM. In this work, reactions between Pt and Sn in thin films are studied to elucidate mechanisms for structural and compositional changes during the interdiffusion process.Thin films of Pt and Sn used in this study were prepared by the two-film method introduced by Shiojiri. Few hundred angstroms of Pt were vacuum-deposited onto holey carbon films mounted on TEM grids. Sn films with an average thickness of 200Å were created by evaporation at rates of 15-30 Å/sec onto air-cleaved KBr substrates. The Sn films were wet-stripped and collected on the holey Pt grids. Figure 1 shows a cross-section schematic of a Pt-Sn couple. While this two-film arrangement did not allow observations of the actual reaction interface, microtomy was used to produce cross-sections.

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