Scopus
YÖKSİS Eşleşti
Identification of radical structures on 1-pentamethylbenzyl-3-ethylimidazoliumsilver(I)bromide and 1,3-bis(pentamethylbenzyl)-4,5-dimethylbenzimidazoliumsilver(I)bromide exposed to gamma rays: an EPR study
Magnetic Resonance in Chemistry · Kasım 2016
YÖKSİS Kayıtları
Identification of radical structures on 1 pentamethylbenzyl 3 ethylimidazoliumsilver I bromide and 1 3 bis pentamethylbenzyl 4 5 dimethylbenzimidazoliumsilver I bromide exposed to gamma rays an EPR study
Magnetic Resonance in Chemistry · 2016 SSCI
PROFESÖR YUSUF CEYLAN →
Makale Bilgileri
DergiMagnetic Resonance in Chemistry
Yayın TarihiKasım 2016
Cilt / Sayfa54 · 864-869
Scopus ID2-s2.0-84991577016
Özet
1-Pentamethylbenzyl-3-ethylimidazoliumsilver(I)bromide and 1,3-bis(pentamethylbenzyl)-4,5dimethylbenzimidazoliumsilver(I)bromide and their Ag+ complexes were synthesized and their polycrystal forms were produced by recrystallization in dichloromethane/Et2O solvent system. Structural determinations were carried out by 1H NMR and 13C NMR with a Varian 400 NMR system using tetramethylsilane as internal standard and CDCl3 as solvent. The disappearance of acidic N-heterocyclic carbene proton showed the formation of Ag(I) complexes. Also, elemental analyses were carried out. Electron paramagnetic resonance (EPR) measurements were performed to determine the formed radical structure on the samples irradiated at the room temperature for 72 h by using 60Co-source with dose rate of 0.680 kGy. The EPR measurements were carried out in the temperature range of 200 K–450 K. Identical radicals were determined on the irradiated compounds. It was observed that the shapes of the spectra of the samples were independent of the temperature but, the resonance line intensities changed linearly with the temperature. Also, it was detected that the free radical on the 1-pentamethylbenzyl-3-ethylimidazoliumsilver(I)bromide is not stable compared to that on the 1,3-bis(pentamethylbenzyl)-4,5dimethylbenzimidazoliumsilver(I)bromide. Copyright © 2016 John Wiley & Sons, Ltd.
Yazarlar (5)
1
Y. Ceylan
2
Keziban Usta
3
Ahmet Kunduracioglu
4
Ayhan Usta
5
Bekir Cetinkaya
Anahtar Kelimeler
chemical synthesis
EPR
irradiation effect
NHC complexes
Kurumlar
Alanya Alaaddin Keykubat University
Alanya Turkey
Ege Üniversitesi
Izmir Turkey
Pamukkale Üniversitesi
Denizli Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
2
Atıf
5
Yazar
4
Anahtar Kelime