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March 2009 - March 2010
Lodz University of Technology
Field of study
- Administration of GNU/Linux Systems
Representative examples of various large amplitude solid state dynamic phenomena are given. Several NMR techniques suitable for quantitative investigations of such processes are presented. The compability between X-ray diffraction and solid state NMR spectroscopy is pointed out. Common labile character of organic solids is discussed.
A series of iminophosphoranes o-X-C6H4-N=PPh3, where X=H(I),Me (II),Et (III),OMe(IV),OEt(V) were investigated by means of dipole moments method. Because of an orientation of aromatic fragment determines intramolecular interactions in the system (benzene ring - double N=P bond), the problem of internal rotation of N-Car bond is important. DM (exp.)...
31P Cross-polarization magic-angle spinning nuclear magnetic resonance (CP-MAS NMR) spectra of eight monophospha-lambda 5-azenes were measured at room temperature. Three of these compounds, with 2-OH substituents, are in principle capable of taking part in the equilibrium process. However, only the open form, tautomer A, is found in the present stu...
13C, 31P and 15N NMR data are reported for seven 2-substituted-N-phenyl-P,P,P-triphenylphospha-λ5-azenes taken at room temperature in acetone-d6 solutions. Ortho substituents significantly influence 13C, 31P, 15N chemical shifts and 1J(31P15N), 3J(31P13C) Couplings.
The structures of 4-N-methylamino and 4-N,N-dimethylamino-1,1,1-trifluorobut-3-en-2-one (1, 2) were solved by means of an analysis of 1H, 1H and 1H, 13C coupling constants. NOE measurements, 13C, 1H heteronuclear correlation and selective decoupling. The spectra of 1 are strongly solvent dependent. Variable-temperature experiments indicated that in...
13C NMR chemical shifts and one-bond carbon—carbon couplings of 21 substituted nitrobenzenes are reported. Systematic increases of couplings due to ortho, meta and para substitution effects have been found. The additivity of these effects cannot be confirmed unanimously. Calculations of1J(CC) made by the SCPT method are in agreement with the trend...