| Abstrakt: |
The complex TcO{(o-O-C6H4)(CH3) C=NN=C(S)(SCH3)}{(CH3)2C=NN=C(S) (SCH3)} was prepared by the reaction of (n-Bu4N) [TcOCl4] in methanol with the Schiff base S-methyl-β-N-(2-hydroxyphenylethylidene)dithiocarbazate in acetone. The compound was characterized by elemental analysis, vibrational and optical spectroscopy, and X-ray crystallography. Crystal data: C15H19N4O2S4Tc, monoclinic, space group P21/c, a = 14.799(5), b = 7.470(2), c = 19.272(5)Å, U = 2064.4(1.8)Å3, Z = 4, Dcalc = 1.65 g cm-3. The structure was refined by least-squares methods to R = 0.102. The complex has a Tc=O bond distance of 1.633(8)Å, and the deprotonated phenolic oxygen of the terdentate ONS-donor ligand is coordinated trans to the oxo oxygen. |
