Structural Elucidation of Co(II), Ni(II) and Cu(II) Complexes of Schiff Base Derived from 2, 3, 4, 5- Tetrahydro Indeno [1, 2-D] Thiazolo [3, 2-A] [1,3] Diazepine- 11 (H) One

B. K. Rai* and Sateydev Singh¹

Department of Chemistry, L. N. T. College, Muzaffarpur - 842 002 (India). ¹Ratanpur, Begusarai (India).

Some hexacoordinated Co(II), Ni(II) and Cu(II) Schiff base complexes have been prepared and characterized on the basis of analytical, magnetic susceptibility, molar mass, IR spectra, electronic spectra, molar conductance measurements. From the analytical and spectroscopic investigation the stoichiometry of the complexes has been found to be [M(TITDT)2X2]; where M = Co(II), Ni(II) and Cu(II); TITDT = 2, 3, 4, 5 tetrahydro indeno (1, 2-d) thiazolo [3,2-a] [1,3] diazepine- 11(H) thiosemicarbazone; X = Cl-, Br-, I- and NO3-. IR spectra of the ligand and complexes proposes, TITDT acts as a neutral bidentate ligand and coordination proposed through azomethine nitrogen and thione sulphur atom of thiosemicarbazone moiety. The remaining coordination positions are satisfied by negative ions, such as Cl-, Br-, I- and NO3-. On the basis of electronic spectra and magnetic susceptibility data the geometry of the complexes are monomeric octahedral in nature. The low value of molar conductance indicate complexes are non-electrolytic in nature.

Schiff base/ TITDT/ Co(II), Ni(II) and Cu(II)/ antifungal study