The Malaysian Journal of Analytical Sciences Vol 16 No 3 (2012): 318 – 324

 

 

 

Synthesis, characterization and conductivity studies of Schiff base ligand derived from isatin and

o-phenylenediamine with its Cobalt(II) metal complex and Lithium-Schiff base compound

 

(Sintesis, Pencirian dan Kajian Kekonduksian Terhadap Ligan Bes Schiff yang Terhasil Daripada Isatin dan O-Phenylenediamina dengan Kobalt(II) Kompleks Logam Peralihan serta Litium-Bes Schiffnya)

 

Muneera Fatin Manan¹, Karimah Kassim², Mohd Abdul Fatah Abdul Manan¹

 

¹Faculty of Applied Sciences,

² Institute of Science,

Universiti Teknologi MARA (UiTM), Shah Alam, 40450 Selangor, Malaysia

 

*Corresponding author: muneeramanan@gmail.com

 

 

Abstract

In this study, a Schiff base ligand, (E)-3-(2-aminophenylimino)indolin-2-one (APIISA) was synthesized via condensation reaction of o-phenylenediamine with isatin. Metal complex and Lithium-Schiff base of this ligand were prepared. Metal complex bis[(E)-3-(2-aminophenylimino)indolin-2-one]Co(II), [Co(APIISA)₂] was synthesized from Schiff base ligand with Cobalt acetate tetrahydrate in 2:1 ratio. While Lithium-Schiff base was prepared by using Lithium acetate dihydrate produced Lithium[(E)-3-(2-aminophenylimino)indolin-2-one], [Li(APIISA)]. All the synthesized compounds were characterized by variety of physicochemical techniques such as melting point, elemental analysis, infrared spectroscopy, ¹H nuclear magnetic spectroscopy, magnetic susceptibility and X-ray diffraction. Conductivity studies of the ligand, metal complex and Lithuim-Schiff base were investigated by impedance analyzer which the samples were prepared in the form of pellets. The electrical conductivities of the prepared compounds were measured by applying alternating current (ac) voltage. The conductivity values were calculated and Lithium-Schiff base showed higher conductivity value followed by Cobalt metal complex and Schiff base ligand.

 

Keywords: Isatin, Schiff base, Cobalt(II) metal complex, Lithium-Schiff base, Conductivity studies

 

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