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8.
Studies on the formation of a Co(II) complex with 2-hydroxy phenyl
azo-2/ -naphthol in aqueous solution and solid state with potential
radioprotection properties
Tathagata Deb, Sanjay Khamrai, Partha Sarathi Guin#,
Manju Bikash Saha, Parikshit Chandra Mandal#
and Saurabh Das*
Department of Chemistry, Jadavpur University, Raja S. C. Mullick
Road, Kolkata- 700032, India.
#Chemical Sciences Division, Saha Institute of Nuclear Physics,
1/AF-Bidhannagar, Kolkata- 700064, India.
Corresponding author. Tel.: +91 33 26437218; +91 33 65340980
Fax: +91 33 24146223 E-mail address:
dasrsv@yahoo.in
(Saurabh
Das).
Abstract:
Cobalt (II) forms a complex with 2-hydroxy phenyl azo-2/ -naphthol
(PAN), a synthesized azo dye. Formation of the complex has been
studied in aqueous solution using different spectroscopic
techniques. Co(II) forms a 1: 2 metal-ligand complex with
2-hydroxy phenyl azo-2/ -naphthol at different pH. The effective
stability constant of the complex, [Co(PAN)2] was
found to be 6.33 × 1016. The complex Co(PAN)2(H2O)2
has been synthesized and characterized by different techniques.
The complex was found to be a potential radioprotector in
presence of g- radiation using an RNA base uracil as the target
molecule.
Key Words: Co(II), 2-hydroxy phenyl azo-2/ -naphthol, Azo,
Stoichiometry, Stability constant, radioprotector.
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