Browsing by Author "Koylu, M. Zafer"
Now showing items 1-7 of 7
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1H NMR study of chiral monoaza-15-crown-5 ether derivative by relaxation time T1
Askin, Muzaffer; Koylu, M. Zafer; Tutsi, Mizgin (Asian Journal Of Chemistry, 2008)Measurement of spin-lattice relaxation time T has been performed for the chiral monoaza-15-crown-5 ether derivative as a function of temperature. Activation energies E. and correlation times (tau(c)) were obtained. The ... -
Dependence of 400 MHz NMR Peak Line Widths of Crude Oil on well Characteristics
Kal, Duzgun; Sunkur, Murat; Koylu, M. Zafer; Yilmaz, Ali (Springer, 2024)Today, magnetic field inhomogeneity in high-field NMR machines is minimized by proper shimming of the machine and extensive dilution of the sample with deuteron solvents. Hence, the line width (LW) measurements of the NMR ... -
Enantioselective complexation of chiral lariat crown ethers and chiral primary alkylammonium perchlorates
Koylu, M. Zafer; Aral, Tarik; Karakaplan, Mehmet; Kocakaya, Safak Ozhan; Hosgoren, Halil (Tubitak Scientific & Technological Research Council Turkey, 2011)In order to investigate the enantiomeric recognition abilities toward 2 chiral alkylammonium perchlorates (AmI, AmII) by H-1-NMR titration method in CDCl3, 4 chiral lariat ethers 8-11 with a (p-methoxyphenoxy) methyl ... -
Estimation of ? value in proton NMR relaxation times of dibenzo diaza 18-crown-6 ether derivative in solution
Yilmaz, Ali; Koylu, M. Zafer; Budak, Hatice (Elsevier Science Bv, 2006)Spin-lattice (T-1) and spin-spin (T-2) relaxation times of seven peaks in dibenzo diaza 18-crown-6 ether derivative were measured at 300K with a Bruker 400 MHz NMR spectrometer. An equation was derived for correlation time ... -
The Examination of a Variety of Different Ions Added to the Crown Ether Derivatives with High Field NMR Spectrometer
Askin, Muzaffer; Zengin, Bilgin; Korunur, Sibel; Kor, Harun; Koylu, M. Zafer (Maik Nauka/Interperiodica/Springer, 2017)The current study involves the measurements of T-1 relaxation time of complexes three different crown ethers (4-aminobenzo-15-Crown-5, 1-Aza-18-Crown-6, 1-Aza-15-Crown-5) and two different ions sodium perchlorate (NaClO4), ... -
Temperature dependence of NMR T1 relaxation of dibenzo diaza 18-crown-6 ether derivative in solution
Koylu, M. Zafer; Budak, Hatice (Asian Journal Of Chemistry, 2007)Spin-lattice relaxation times in one of dibenzo diaza 18-crown-6 ether derivative were measured vs. increasing temperature. The relaxation times (In T-1) were fitted vs. I/T over a temperature range of 313-277 K. A linear ... -
Temperature Dependence Study of Chiral Ether Derivative by 1H NMR Relaxation Time
Ekinci, Arzu; Koylu, M. Zafer; Askin, Muzaffer (Asian Journal Of Chemistry, 2014)Measurement of spin-lattice relaxation time T-1 has been studied for the N-benzil-2-isobutyl aza-15-crown-5 ether derivative as a function of temperature. The data suggest that the underlying mechanism of relaxation rates ...
