Abstract
Synthesis and characterization of some phenyl azo substituted tetraaza macrocyclic complexes of Ni(II) are reported. Electrochemical behaviour of these macrocyclic complexes has been examined using polarographic, voltammetric and spectroscopic techniques. These studies show that both the ligand and the metal are electrochemically active. The electrochemical behaviour of the azo function has been shown to occur through a single four-electron process. When a nitro group is also present, the nitro function of the azo moiety is reduced in a six-electron cathodic wave.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Volbeda A, Charon M H, Piras C, Hatchikian E C, Frey M and Fontecilla J C Camps 1995Nature (London) 373 580
Marganisan C A, Vazir H, Baidya N, Olmstead M M and Mascharak P K 1995J. Am. Chem. Soc. 117 1584
Brooker S and Croucher P D 1995J. Chem. Soc., Chem. Commun. 1493 2075
Brooker S and Davidson T C 1997Chem. Commun. 2007
Brooker S, Croucher P D and Roxborgh F M 1996J. Chem. Soc., Dalton Trans. 3031
Sirish M and Maiya B G 1994J. Photochem. Photobiol. A77 189
Rao T A and Maiya B G 1995J. Chem. Soc., Chem. Commun. 939
Basolo F, Hoffman B M and Ibers J A 1975Acc. Chem. Res. 8 384
Gutsche C D and Andreetti G D 1991 InInclusion compounds (eds) J L Atwood, JED Daies and D D MacNicol (Oxford: University Press) vol. 4
Izatt R M, Lamb J D, Hawkins R T, Brown P R, Izatt S R and Christensen J J 1983J. Am. Chem. Soc. 105 1782
Martel A E and Taqui Khan M M 1973Inorg. Biochem. 2 654
Geyes R P 1974Bull. Parenter. Drug Assoc. 28 88; Baldwin J E 1975Newsweek 91
Price R 1970 InChemistry of synthetic dyes (ed.) K Venkataraman (New York: Academic Press) vol. 3
Busch D H 1964Rec. Chem. Prog. 25 107
Cummings S C and Sievers R E 1970J. Am. Chem. Soc. 92 215
Zollinger H 1961Aliphatic and aromatic compounds (New York: Interscience)
Kolthoff IM and Lingane J J 1952 InPolarography (New York: Interscience) vol. 2
Meites L 1965 InPolarographic techniques (New York: Interscience)
Martin J G, Wei R M C and Cummings S C 1972Inorg. Chem. 11 475
Florence T M 1974J. Electroanal. Chem. Interfacial Electrochem. 52 115
Goddard J D and Joslin T A 1979J. Inorg. Nucl. Chem. 41 1229
Mann C K 1969 InElectroanalytical chemistry (ed.) A J Bard (New York: Marcel Dekker) vol.3
Curtis N F and Cook D F 1967Chem. Commun. 962
Olson D C and Vasilevskis J 1969Inorg. Chem. 8 164
Barefield E K and Busch D H 1970Chem. Commun. 522
Truex T J and Holm R H 1972J. Am. Chem. Soc. 94 4529
Thomas F G and Bato K G 1975 InChemistry of the hydrazo, azo and azoxy groups (ed.) S Patai (London: Wiley)
Author information
Authors and Affiliations
Additional information
It has been brought to our notice that the paper ‘Synthesis and electrochemical studies of phenylazo substituted tetraaza macrocyclic complexes of Ni(II)’ by Randhir Singh, Suresh Kumar and Amarendra Bhattacharya, Proc. Indian Acad. Sci. (Chem. Sci.), vol. 112, No. 6, December 2000, pp. 601–605 has been plagiarized from an earlier paper published in J. Inorg. Nucl. Chem. (1979, vol. 41, pp. 1229–1232).
Our own investigations reveal that the author has reproduced cyclic voltammograms and also some paragraphs verbatim from the earlier paper.
The author was provided an opportunity to explain the alleged plagiarism and to submit copies of original polarograms he had recorded and laboratory notebooks to substantiate that he had actually prepared the compounds and recorded their cyclic polarograms. The author in his reply stated that he was not in a position to provide the required details. The Editorial Board in its deliberations expressed concern over this matter and decided to withdraw this article.
About this article
Cite this article
Singh, R., Kumar, S. & Bhattacharya, A. RETRACTED ARTICLE: Synthesis and electrochemical studies of phenylazo substituted tetraaza macrocyclic complexes of Ni(II). J Chem Sci 112, 601–605 (2000). https://doi.org/10.1007/BF02704367
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02704367