18 research outputs found
Analysis of the spatial structure of calixarenes in solutions by 2-D NMR (NOESY) spectroscopy
The spatial structure of calixarenes has been investigated by two-dimensional nuclear Overhauser effect spectroscopy (NOESY). A technique to study spatial structure of small molecules based on the combination of the method of small relaxation delays (Fast NOESY) and the method to measure relative cross-peak intensities has been proposed and approved. The given combination of methods allows one at a fixed time to reach a greater accuracy of measurements in comparison with other methods. © Springer-Verlag 2006
Spatial Structure of Dimeric Capsules of Tetraurea Calix[4]arenes in Solutions According to 2-D NMR (NOESY) Spectroscopy
Spatial structure of calixarene has been investigated by two-dimensional nuclear magnetic resonance (nuclear Overhauser effect) spectroscopy. Interproton distances for the given compound in solutions of benzene and cyclohexane have been measured and the experimental values have been compared with theoretically predicted ones
New materials based on tubular nanodimensional structures 1. Synthesis, structural studies and determination of interproton distances in solutions of functionalized thiacalix[4]arenes according to NMR spectroscopic data (NOESY)
New derivatives of p-tert-butylthiacalix[4]arene were synthesized. The conformation of the macrocycles and interproton distances in the synthesized thiacalix[4]arenes in solutions were determined by NMR spectroscopy. p-tert-Butylthiacalix[4]arene distally disubstituted at the lower rim adopts the cone conformation, and the tetrasubstituted products are formed in the 1,3-alternate conformation. © 2004 Springer Science+Business Media, Inc
Analysis of the spatial structure of calixarenes in solutions by 2-D NMR (NOESY) spectroscopy
The spatial structure of calixarenes has been investigated by two-dimensional nuclear Overhauser effect spectroscopy (NOESY). A technique to study spatial structure of small molecules based on the combination of the method of small relaxation delays (Fast NOESY) and the method to measure relative cross-peak intensities has been proposed and approved. The given combination of methods allows one at a fixed time to reach a greater accuracy of measurements in comparison with other methods. © Springer-Verlag 2006
Analysis of the spatial structure of calixarenes in solutions by 2-D NMR (NOESY) spectroscopy
The spatial structure of calixarenes has been investigated by two-dimensional nuclear Overhauser effect spectroscopy (NOESY). A technique to study spatial structure of small molecules based on the combination of the method of small relaxation delays (Fast NOESY) and the method to measure relative cross-peak intensities has been proposed and approved. The given combination of methods allows one at a fixed time to reach a greater accuracy of measurements in comparison with other methods. © Springer-Verlag 2006
Analysis of the spatial structure of calixarenes in solutions by 2-D NMR (NOESY) spectroscopy
The spatial structure of calixarenes has been investigated by two-dimensional nuclear Overhauser effect spectroscopy (NOESY). A technique to study spatial structure of small molecules based on the combination of the method of small relaxation delays (Fast NOESY) and the method to measure relative cross-peak intensities has been proposed and approved. The given combination of methods allows one at a fixed time to reach a greater accuracy of measurements in comparison with other methods. © Springer-Verlag 2006
Spatial Structure of Dimeric Capsules of Tetraurea Calix[4]arenes in Solutions According to 2-D NMR (NOESY) Spectroscopy
Spatial structure of calixarene has been investigated by two-dimensional nuclear magnetic resonance (nuclear Overhauser effect) spectroscopy. Interproton distances for the given compound in solutions of benzene and cyclohexane have been measured and the experimental values have been compared with theoretically predicted ones
Spatial Structure of Dimeric Capsules of Tetraurea Calix[4]arenes in Solutions According to 2-D NMR (NOESY) Spectroscopy
Spatial structure of calixarene has been investigated by two-dimensional nuclear magnetic resonance (nuclear Overhauser effect) spectroscopy. Interproton distances for the given compound in solutions of benzene and cyclohexane have been measured and the experimental values have been compared with theoretically predicted ones
Spatial Structure of Dimeric Capsules of Tetraurea Calix[4]arenes in Solutions According to 2-D NMR (NOESY) Spectroscopy
Spatial structure of calixarene has been investigated by two-dimensional nuclear magnetic resonance (nuclear Overhauser effect) spectroscopy. Interproton distances for the given compound in solutions of benzene and cyclohexane have been measured and the experimental values have been compared with theoretically predicted ones
New materials based on tubular nanodimensional structures 1. Synthesis, structural studies and determination of interproton distances in solutions of functionalized thiacalix[4]arenes according to NMR spectroscopic data (NOESY)
New derivatives of p-tert-butylthiacalix[4]arene were synthesized. The conformation of the macrocycles and interproton distances in the synthesized thiacalix[4]arenes in solutions were determined by NMR spectroscopy. p-tert-Butylthiacalix[4]arene distally disubstituted at the lower rim adopts the cone conformation, and the tetrasubstituted products are formed in the 1,3-alternate conformation. © 2004 Springer Science+Business Media, Inc