Chemistry |
|
 |
1997, No. 4
A.V. Dragunova, Yu.P. Zarubin, N.A. Treschanina, E.A. Yurkina, P.P. Purygin
Toluene-4-sulfoimidazolide - azolide aromatic sulfonic acid were tested on anti bacterial activity in the cell enterobacteria Escherichia coli M-17. The results obtained confirm that toluene-4-sulfoimidazolide acted on process division of bacteria, reduces their catalase activity.
V.Ya. Rochev, V.G. Bekeshev, Yu.G. Galyametdinov, N.N. Savvateev, V. Vagner, G. Grosse
PARAMAGNETIC AND ANTIFERROMAGNETIC MESOGENIC: MOSSBAUER RESEARCHE
Mossbauer spectra of paramagnetic mesogenic iron (3+) complex FeClL2 (L -bidentate azometine ligand) were measured at 4.2K- 300K so as in external magnetic field 6T. It was shown that at room temperature this complex contains two different kinds of high-spin iron (3+) atoms forming the isolated and chlorine-bonded chain complex units. The transition from paramagnetic to antiferromagnetic state for this complex realised in a wide temperature interval between 140K and 4.2K. At 4.2K and Hext= 6T about 94split structure with Hint = 278 - 330 kOe and only 6% - to quadrupole doublet with splitting 0.46 mm/s.
V.Ya. Rochev, V.G. Bekeshev, N.N. Savvateev
STRUCTURAL-DYNAMIC ANALYSIS OF LIQUID-CRYSTAL POLIMERS CONTAINED TIN
In order to get more insight into the stucture-property relations of metal containing liquid-crystalline (MLC) polymers, the structural and dynanical peculiarities of tin organic polyesters with the dierent positions of R430Sn fragments in a polymer matrix were studied. The polyesters were investigated by means of differential scanning calorimetry, polarizing microscopy, X-ray diffraction techniques and Moessbauer (Sn-119) spectroscopy. The conclusions on the types of cooled mesophases and on the dimensions of the metal containing microregoions inside these mesophases were made.