Metallosurfactants of Chromium(III) Coordination Complexes. Synthesis, Characterization and Determination of CMC Values |
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| Authors: | Narayanasamy Kumaraguru Sankarlingam Arunachalam Mahadevimanglam Narayanasamy Arumugham Kannappan Santhakumar |
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| Affiliation: | (1) School of Chemistry, Bharathidasan University, Tiruchirappalli, 620 024, Tamil Nadu, India;(2) Department of Chemistry, Vellore Institute of Technology, Vellore, 632 014, Tamil Nadu, India;(3) Ecole Polytechnique Fédérale de Lausanne, EPFL-ENAC- LPAS, Station 6, CH-1015 Lausanne, Switzerland |
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| Abstract: | A number of mixed ligand chromium(III)–surfactant coordination complexes, of the type cis-[Cr(en)2(A)X]2+ and cis-α-[Cr(trien)(A)X]2+ (A = Dodecyl or Cetylamine; X = F−, Cl−, Br−) were synthesized from the corresponding dihalogeno complexes by ligand substitution. These compounds form foam in aqueous solution when shaken. The critical micelle concentration (CMC) values of these surfactant metal complexes in aqueous solution were obtained from conductance measurements. Specific conductivity data (at 303, 308 and 313 K) served for evaluation of the temperature-dependent critical micelle concentration (cmc) and the thermodynamics of micellization (Δ Gm0, Δ Hm0 and Δ Sm0). |
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