- Title
- Synthesis and electrochemical properties of new cobalt and manganese phthalocyanine complexes tetra-substituted with 3,4-(methylendioxy)-phenoxy
- Creator
- Erdoğmuş, Ali, Akinbulu, Isaac Adebayo, Nyokong, Tebello
- Type
- Article
- Identifier
- vital:7234
- Identifier
- http://hdl.handle.net/10962/d1019672
- Description
- The synthesis and electrochemical properties of new cobalt and manganese phthalocyanine complexes, tetra-substituted with 3,4-(methylendioxy)-phenoxy at the peripheral (complexes 3 and 5) and non-peripheral (complexes 4 and 6) positions, are reported. Complexes 3 and 4 showed Q-band absorption, in DMF, at 668 and 686 nm, respectively while Q-band due to complexes 5 and 6 appeared at 732 and 760 nm, respectively in CHCl3. All the complexes showed well resolved redox processes attributed to both metal and ring based processes. Complexes 3 and 4 showed four redox processes, labeled I, II, III and IV. For complex 3, process I (CoIPc−2/CoIPc−3) was observed at −1.45 V, II (CoIIPc−2/CoIPc−2) at −0.38 V, III (CoIIIPc−2/CoIIPc−2) at +0.49 V and IV (CoIIIPc−1/CoIIIPc−2) at +0.97 V versus Ag|AgCl. Similar processes were observed for complex 4 at −1.36 V, −0.27 V, +0.56 V, +1.03 V versus Ag|AgCl, respectively. Complexes 5 and 6 showed two redox processes (I and II). For complex 5, these processes appeared at −0.79 V (MnIIPc−2/MnIIPc−3, I) and −0.07 V versus Ag|AgCl (MnIIIPc−2/MnIIPc−2, II), while for complex 6, they were observed at −0.86 V and −0.04 V versus Ag|AgCl. Spectroelectrochemistry was used to probe and confirm the origin of these processes.
- Description
- Original publication is availabe at http://dx.doi.org/10.1016/j.poly.2010.05.012
- Format
- 12 p., pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Erdoğmuş, A., Akinbulu, I. A., & Nyokong, T. 2010. Synthesis and electrochemical properties of new cobalt and manganese phthalocyanine complexes tetra-substituted with 3, 4-(methylendioxy)-phenoxy. Polyhedron, 29(11): 2352-2363. Available: http://dx.doi.org/10.1016/j.poly.2010.05.012
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Nyokong, Tebello (Distinguished Professor)