Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Iwona Binkowska"'
Autor:
Iwona Binkowska, Sławomir Binkowski
Publikováno v:
Free radical research. 54(7)
This study aimed to develop a procedure for preparing a modified silica-naringin hybrid system. To accomplish, the properties of the obtained material were characterized by FT-IR analysis, UV-Vis spectrophotometry, thermogravimetry, scanning electron
Autor:
Iwona Binkowska
Publikováno v:
SN Applied Sciences. 2
Flavonoids are widely recognized for their beneficial effects in the cosmetic industry, possessing many biological activities, such as antioxidant, anti-inflammatory and antimicrobial properties. The study presented an efficient and simple solution t
Autor:
Iwona Binkowska
Publikováno v:
International Journal of Mass Spectrometry. 411:27-33
The carbon acids activated by two thiobenzyl groups have been synthesized and the products of the proton transfer reaction between 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) and studied compounds in solution were defined by electrospray ionization mas
Autor:
Iwona Binkowska
Publikováno v:
Comptes Rendus Chimie. 18:898-908
The subject of carbon acids activated by two sulfonyl groups is reviewed. It will be shown that the studied compounds are relatively strong acids that have their importance in organic chemistry. The structure and reactivity of the products of the dep
Autor:
Iwona Binkowska
Publikováno v:
International Journal of Mass Spectrometry. 373:56-65
The series of six carbon acids activated by two sulfonyl groups have been synthesized and the products of their deprotonation in acetonitrile solution by 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) were defined by electrospray ionization mass spectrome
Publikováno v:
Journal of Molecular Structure. 1062:35-43
The electron densities of the disulfonyl carbanions were determined using experimental 13 C chemical shifts. The 13 C NMR spectra and electron densities for the disulfonyl, nitro, and cyano carbon acids were calculated at the MP2/cc-pVDZ level of the
Publikováno v:
Journal of Molecular Structure. 1018:96-101
The π-electron densities in the carbanions of (4-R 1 -phenyl)bis(ethylsulfonyl)methanes and (4-R 1 -phenyl)bis(benzylsulfonyl)methanes were calculated from 13 C NMR shifts in acetonitrile using the method of Bradamante et al. According to this analy
Publikováno v:
Open Chemistry. 8:582-586
Proton transfer reactions rates between carbon acids 1-nitro-1-(4-nitrophenyl)ethane (NPNE), 2-methyl-1-nitro-1-(4-nitrophenyl)propane (MNPNP)) and phosphazenes (BEMP, BTPP, P1-t-Oct) in tetrahydrofuran have been measured, and the activation paramete
Publikováno v:
Journal of Molecular Structure. 928:54-58
4-Nitrophenyl[bis(benzylthio)]methane was synthesized and used in structural study by X-ray diffraction combined with NMR and spectrophotometric method. In the crystal structure the molecule assumes the conformation where the acidic H-atom is difficu
Publikováno v:
Journal of Molecular Structure. 917:52-55
Intermolecular interactions in a synthesized C-acid, 4-nitrophenyl[bis(ethylsulfonyl)]methane have been analysed and its structure determined by X-ray diffraction. The molecular packing in the crystal is governed by CH…O. The dimensions of the hydr