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      Viscometric Behaviour and Micellization of Complexes of Copper (II) Stearate with N-donor Heterocyclic Dyes Translated title: Viskometrisches Verhalten und Mizellierung der Komplexe von Kupfer(II)stearat mit heterozyklischen N-Donor-Farbstoffen

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          Abstract

          Colloido-chemical behavior of copper (II) stearate and N-donor ligands in benzene-methanol mixture of varying composition has been investigated by viscometric measurements. The critical micelle concentration values depend upon the composition of solvent mixture and are to be found in close agreement with each other. The general trend observed is that the viscometric parameters with concentration are quite different and the plots are obtained with curvature at a definite concentration corresponding to critical micelle concentration at which there is marked change in the aggregation of the complex molecules. The results of phenylthiourea and benzothiazole complexes in regards to solute-solvent and solute-solute interactions in mixed solvent systems have been discussed in terms of the equations proposed by Moulik and Jones-Dole. The complexes were synthesized with N-donor ligands and copper (II) stearate and characterized by their elemental analysis, molecular weight, melting point, IR and NMR spectral studies. Due to the surface-active properties of copper stearate, the complexes show remarkable applications in industries and are used as emulsifiers, dispersing agents, foaming and wetting agents. N-donor ability of ligands make them useful as intermediates for many organic compounds such as colorants, agrochemical and pharmaceutical. They are good antiviral, antibacterial and antimalerial agents.

          Kurzfassung

          Das kollidal-chemische Verhalten von Kupfer(II)stearat und N-Donor-Liganden in Benzol-Methanol-Mischungen unterschiedlicher Zusammensetzung wurden mit viskometrischen Methoden untersucht. Die Werte der kritischen Mizellbildungskonzentration sind abhängig von der Zusammensetzung der Lösungsmittelmischungen und liegen gegenseitig in guter Übereinstimmung. Der allgemein beobachtete Trend ist, dass die viskometrischen Parameter mit der Konzentration völlig unterschiedlich sind und die erhaltenen Plots mit Krümmung bei einer bestimmten Konzentration zu der kritischen Mizellbildungskonzentration korrespondieren, an der der Aggregationswechsel der Komplexmoleküle gekennzeichnet ist. Die Ergebnisse der Komplexe von Phenylthioharnstoff und Benzothiazol, bezogen auf die Solute-Solvent- und Solvent-Solute-Wechselwirkungen der Lösungsmittelmischungssysteme, werden anhand der vorgeschlagenen Gleichungsterme nach Moulik und Jones-Dole diskutiert. Die Komplexe wurden mit N-Donor-Liganden und Kupfer(II)stearat synthetisiert und durch Elementaranalyse, Molekülgewicht, Schmelzpunkt, IR- und NMR-Spektren charakterisiert. Aufgrund der oberflächenaktiven Eigenschaften von Kupferstearat zeigen die Komplexe bemerkenswerte industrielle Verwendungen und werden als Emulgator, Dispergiermittel, Schaumbildner und Netzmittel eingesetzt. Das N-Donor-Vermögen der Liganden macht sie als Zwischenprodukte für viele organische Verbindungen wie Farbstoffe, Agro-Chemikalien und Arzneimittel verwendbar. Sie sind gute antivirale, antibakterielle und Antimalaria-Mittel.

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          Chem. Phys. Angew Technik Grenzflächenaktive Stoffe

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            Author and article information

            Journal
            tsd
            Tenside Surfactants Detergents
            Carl Hanser Verlag
            0932-3414
            2195-8564
            2009
            : 46
            : 1
            : 24-30
            Affiliations
            1 Research Laboratory, Department of Chemistry, S.D. Govt. College, Beawar – 305901, Rajasthan, India
            2 Department of Pure and Applied Chemistry, MDS University, Ajmer
            Author notes
            Dr. Neha Mathur, 70/21, Patel Marg, Mansarovar, Jaipur, India, E-Mail: nehavmathur@ 123456yahoo.co.in

            Dr. Neha Mathur was born in June 1969. She completed her Post Graduation in 1989. After completing her Ph.D. in 1994 from M.D.S. University, Ajmer. She is at present working as Associate Professor in S. D. Govt. college, Beawar (Rajasthan).

            Dr. K. G. Ojha was born in October 1949, studied for his M.Sc. at Rajasthan University. After obtaining his Ph.D. in 1981, he worked for College-Education Rajasthan for 26 years and joined M.D.S. University as Associate Professor in the Department of Applied Chemistry in 1997. At present he is working as Professor & Head, Department of Pure and Applied Chemistry, M.D.S. University, Ajmer (Rajasthan).

            Ahmed Imran was born in October 1981. He completed his post graduation in 2006 from Mahatma Gandhi Institute of Applied Sciences, Jaipur. At present he is working as Research Scholar at Research Laboratory S.D. Govt. College, Beawar (Rajasthan).

            Saxena Pooja was born in September 1982, She did her M.Sc. in 2004, from S.D. Govt. College, Beawar. Currently she is working as Research Scholar at Research Laboratory, S.D. Govt. College, Beawar (Rajasthan).

            Article
            TS110004
            10.3139/113.110004
            146ec72a-4a8d-4701-b620-0ae4133b4614
            © 2009, Carl Hanser Publisher, Munich
            History
            : 30 March 2008
            : 23 September 2008
            Page count
            References: 18, Pages: 7
            Categories
            Novel Surfactants

            Chemistry,Pharmaceutical chemistry,Analytical chemistry,General chemistry
            N-Donorheterocyclic dyes,Benzothiazol,Moulik-Gleichung,Moulik equation,benzothiazole,copper stearate,phenylthiourea,viscosity,fluidity,Jones-Dole equation,N-donorheterozyklische Farbstoffe,Kupferstearat,Phenylthioharnstoff,Viskosität,Fluidität,Jones-Dole-Gleichung

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