Direct formation of new water soluble Re and Tc complexes containing PTA (1,3,5-triaza-7-phosphaadamantane) from their permetallated salts. Reactivity and X-ray crystal structures
| Autor: | Valeria Ferretti, Valerio Bertolasi, Paola Bergamini, Andrea Marchi, Giada Bersani, Lorenza Marvelli |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
5-Triaza-7-phosphaadamantane
Inorganic chemistry chemistry.chemical_element Crystal structure 010402 general chemistry Technetium 01 natural sciences Medicinal chemistry Inorganic Chemistry Paramagnetism 1 3 5-Triaza-7-phosphaadamantane Dithiocarbamate complexes Rhenium Water-soluble complexes X-ray structures Materials Chemistry Reactivity (chemistry) Physical and Theoretical Chemistry Dithiocarbamate chemistry.chemical_classification 010405 organic chemistry X-ray Ambientale 0104 chemical sciences chemistry Yield (chemistry) |
| Popis: | A new one-pot synthetic procedure to new water-soluble rhenium and technetium complexes, directly from the corresponding permetallated species, is here presented. The new water-soluble M(IV) and M(III), (M = Re, Tc) paramagnetic complexes were obtained by treating [MO4]− with an excess of PTA (1,3,5-triaza-7-phosphaadamantane), in water. In the presence of SnCl2, the complexes [MCl3(PTA)3]Cl, (M = Re, 1; Tc, 3), were obtained in good yield, while in the absence of SnCl2 the unexpected species containing methylated PTA, [MCl4(PTA-Me)2]Cl, (M = Re, 2; Tc, 4), were produced. A preliminary study of the reactivity of these products with N,N-diethyldithiocarbamate was also carried out: the diamagnetic binuclear μ-oxo species [M2O3(Et2NCS2)4] (M = Re, 6; Tc, 7) were isolated from the reactions of 1, 2 and 4 with dithiocarbamate. The reaction of 3 gave rise to an unusual epta-coordinated technetium(III) complex [Tc(Et2NCS2)3(PTA)] (5). The X-ray crystal structures of the new PTA complexes 2, 4, 5 and 7 have been determined. |
| Databáze: | OpenAIRE |
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