Experimental-theoretical method for determining mechanical characteristics of spherical films and membranes of complex structure

There are known methods for determining the mechanical characteristics of films and membranes with plane initial geometry. But the films and membranes can have nonplanar initial shape (shell compositions of material-structure type) and complex structure. It is impossible to determine mechanical characteristics of such objects by the standard uniaxial tension method. There are few papers dealing with mechanical characteristics of shell material-structures with defects.     

ESR spectral classification of smectic phases of mesomorphous paramagnetic metal complexes

A structural classification was examined for paramagnetic smectics relative to the ESR spectra of orientated layers. The number of components and their location in the spectra of such systems depend on the symmetry of the liquid crystal unit cell and the orientation of the sample in the external magnetic filed. The determination of the internal molecular structure of the meso phase is possible by analyzing the effective g-tensor realized as a result of spin exchange in the system. The major conclusions were tested for model ESR spectra.Kazan Physics Technology Institute. Translated from Zhurnal Strukturnoi Khimii, Vol. 30, No. 6, pp. 59–64, November–December, 1989.     

Reduction of LnIII to LnII in reactions of LnCl3·6H2O (Ln = Eu,Yb, and Sm) with Bui 2AlH in THF. The formation of soluble luminescent complexes LnCl2·xTHF

Soluble luminescent complexes of divalent lanthanides, LnCl₂·xTHF (Ln = Eu, Yb, and Sm), were obtained for the first time by reduction of Ln^III to Ln^II in reactions of the lanthanide trichloride hexahydrates LnCl₃·6H₂O with Buⁱ ₂AlH in THF. The photoluminescence spectra and other spectral characteristics of LnCl₂·xTHF were examined.