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Synthesis, Spectral Characterization and Biological Studies of Lanthanum(III) Complexes with 3-Substituted-4-Amino-5-Mercapo-1,4-Triazoles Schiff Bases

Yadawe M. S., Unki S. N., Patil S. A.

International Letters of Chemistry, Physics and Astronomy

2013

Vol. 12

94--104

Some lanthanum(III) complexes have been synthesized by reacting lanthanum(III) metal salt with Schiff bases derived from 3-substituted-4-amino-5-mercapto-1,2,4-triazole and glyoxal/ biacetyl/ benzyl. All these complexes are not soluble in common organic solvents. However sparingly soluble in DMF and DMSO. The chemical analysis of the complexes confirmed to the stoichiometry of the type La(III)LNO3•H2O. La(III)LCl•H2O and La(III)LNCS•H2O respectively. The chelation of the complexes has been proposed in the light of analytical, spectral studies. The measured molar conductance values indicate that, the complexes are non-electrolytes. The Schiff bases and their complexes have been screened for their antibacterial and antifungal activities. The results of these studies show the metal complexes to be more antibacterial and antifungal as compared to the uncomplexed coumarins. lanthanum(III) complexes.

Selection and optimization of staining techniques of Chinese hamster lung fibroblast V79 cell preparations

Rudnicka K., Krzyżewski Z.

Environmental Biotechnology

2011

Vol. 7, No. 2

84-87

We present the results of optimization of fixation and staining of the Chinese hamster lung fibroblast V79 cell line. The experiment included four methods of fixation and three methods of staining and enabled the selection of the best visualization technique for V79 cell lines culture. The Schiff method of colouring with Light Green contrasted well the cell nucleus and the cytoplasm, but the staining was light-sensitive and transient. The Giemsa staining made cell preparations suitable for microscopic evaluation, although the difference between the nucleus and the cytoplasm was not always easily recognisable.