College of Science

The present work can be  divided into two parts :-

Part one : - Synthesis of six 2-(arylhydrazone) benzothiazole ligands and their Fe(III),Co(II) and Mn(II) complexes:  

     The six ligands were prepared according to the following steps:-

     Step-1- :-hydrazinolysis of 2-Mercaptobenzothiazole gave 2-hydrazino benzothiazole .

This work involves synthesis of different five and six membered heterocyclic rings starting from oxalic acid and divided into four different parts and the reaction steps for each part are summarized as shown below.

First part:

    This part involved the synthesis of pyridazin ,phthalazin, pyrazole ,pyrazolone and triazole derived from oxalic acid hydrazide .Scheme (I).

Second part:

This work involves the preparation of two liquid crystalline compounds, 4,4^´-bis-(4-propoxybenzylidene amino)biphenyl (2_b), and 2,5-bis-[4-(4^´-propoxybenzylideneamino)phenyl]1,3,4-oxadiazole (1_f).The prepared compounds were characterized qualitatively by using FTIR, ¹HNMR, and elemental analysis (EA).