Multiple metal coordinating behaviour of the tetrapodal ligand 1,1,1,1-tetrakis[(salicylaldimino)methyl]methane |
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| Authors: | Supriya Dutta Papu Biswas Ulrich Flörke Kamalaksha Nag |
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| Affiliation: | 1. Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India;2. Department of Chemistry, Bengal Engineering and Science University, Shibpur, Howrah 711 103, India;3. Anorganische und Analytische Chemie, Universität Paderborn, D-33098 Paderborn, Germany |
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| Abstract: | The tetrapodal ligand 1,1,1,1-tetrakis(salicylaldimino)methyl]methane (H4tsam) has been introduced for the first time for metal complexation. Two zinc(II) complexesZn2(tsam)] (1) and Zn3(Htsam)2]·2C7H8 (2) have been obtained by reacting zinc acetylacetonate with the ligand in the presence of triethylamine, while a cobalt(III) complex Co(Htsam)]·CH3CN·H2O (3) is obtained when Co(ClO4)2·6H2O is reacted in air. All the compounds have been characterized by their elemental analyses and ESI-MS, IR, UV-VIS and 1H NMR spectra. The X-ray crystal structures of H4tsam, 2 and 3 have been determined. Compounds 1 and 2 exhibit fluorescence in solution and the lifetimes of their luminescence decay have been measured. Thermal analysis (TGA, DTA) of 2 with regard to loss of encapsulated toluenes and redox behaviour of 3 have been studied. |
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