تحضير ليكاندات حلقة كبيرةمن نوع N2S2 ومعقداتها الفلزية الجديدة مع دراسة بعض الخصائص الثرموديناميكية للمعقدات

Synthesis new macrocyclic ligands type N2S2 and their metal complexes and studying thermodynamic properties of complexes

The  work  of  this  thesis  deals  with the synthsis and characterization of a macrocyclo Ligands and di nuclear metal ions complexes , the preparation of new ligands including the  preparation  of  amide  precursor through the  reaction  between the  ethylene  diamine ,1,4-phenylene diamine and  hydrazine  hydrate  with  mercapto  acetic  acid , the precuesors was reacted  with penta erythritol tetra bromide  as  bridge  in presence  the metal  ions  of  Co ⁺²  , Ni ⁺² , Cu ⁺² , Pd ⁺² , Pt ⁺⁴  in Template  reaction  to abtain  the  macrocycle binuclear  complexes . The  prepared  compounds were characterized  by  FT- IR , UV- Vis , ¹H ,¹³C –NMR and Mass  spectroscopies , Molar condectivity , mole ratio , magnetic susceptibility , and micro elemental analysis .                                                                     

The thermodynamic  studies  parameters  of  the  prepared  complexes was carried  out and  the stability  constant  were  determined .

The  spectroscopyic  and  magnetic  moments  shows  the  suggested geometry the metal  ions  are  octahedral  for  Co ⁺² , Cu ⁺², Pt⁺⁴  with L¹ , Co ⁺² with  L² , Co ⁺² , Cu ⁺² , Ni ⁺² , Pt⁺⁴  with  L³ , Tetrahedral  for  Ni ⁺² with  L¹ , Cu ⁺² with  L² , and  the  squar  planar  geometry  around  Pd ⁺²  with   L¹ , L² , L³ .

The  stability  constant  and  thermodynamic  studies  indicate  the  complexes  are  stable  in  room  Temprature