## Abstract The ^1^H and ^13^C NMR spectra of __s__βtrioxane partially oriented in three nematic solvents were analysed, and the measured dipolar coupling constants, corrected for harmonic vibrations and for correlated deformation, were used to obtain information about the __r__~Ξ±~ structure of the
The pyrimidine-iodine interaction; a study of complex formation by NMR of oriented molecules
β Scribed by N. Suryaprakash; R. Ugolini; P. Diehl
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 241 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The interaction of pyrimidine with iodine when both are dissolved in a liquid crystal solvent has been studied. The considerable changes observed in the degrees of order of pyrimidine can be quantitatively attributed to complex formation between the nitrogen atoms and iodine along axes forming angles of 30Β° with the nitrogenβnitrogen axis and in the molecular plane. The complex formation does not affect measurably the proton and carbon positions of pyrimidine.
π SIMILAR VOLUMES
The freeze-dried samples prepared from dilute PVA aqueous solutions and PVAΓiodine complex aqueous solutions have been examined using a scanning electron microscope. The samples prepared from syndiotacticity-rich PVA (S-PVA) solutions were found to have a network structure due to the formation of in
## Abstract The ^1^H and ^13^C NMR spectra of partially oriented thietane have been recorded and analysed. The molecular structure was determined assuming the molecule to be planar and rigid. Because of the unsatisfactory fit of the dipolar coupling constants, a model which also takes into account
## Abstract A reverse diffusion filter NMR experiment (Drev) is proposed for the study of small molecules in binding with macromolecules. The filtering efficiency of Drev to eliminate the signals of the macromolecule is shown to be superior to conventional transverse relaxation filters at least for
Electron transfer (ET) to Rh(III) complexes intercalated in DNA is known to initiate the photorepair of cyclobutane-type pyrimidine photodimers Pyr<>Pyr. We analyzed the energetics of the elementary steps of the resulting splitting reaction Pyr<>Pyr + Rh(III) + hΞ½ β Rh(III) + 2Pyr based on results o