| Autor: |
Alexander E, Miroslavov, Yuriy S, Polotskii, Vladislav V, Gurzhiy, Alexander Yu, Ivanov, Alexander A, Lumpov, Margarita Yu, Tyupina, Georgy V, Sidorenko, Peter M, Tolstoy, Daniil A, Maltsev, Dmitry N, Suglobov |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Inorganic chemistry. 53(15) |
| ISSN: |
1520-510X |
| Popis: |
Technetium(I) and rhenium(I) pentacarbonyl complexes with ethyl 2-isocyanoacetate and methyl 11-isocyanoundecanoate, [M(CO)5(CNCH2COOEt)]ClO4 (M = Tc (1) and Re (2)) and [M(CO)5(CN(CH2)10COOMe)]ClO4 (M = Tc (3) and Re (4)), were prepared and characterized by IR, (1)H NMR, and (13)C{(1)H} NMR spectroscopy. The crystal structures of 1 and 2 were determined using single-crystal X-ray diffraction. The kinetics of thermal decarbonylation of technetium complexes 1 and 3 in ethylene glycol was studied by IR spectroscopy. The rate constants and activation parameters of this reaction were determined and compared with those for [Tc(CO)6](+). It was found that rhenium complexes 2 and 4 were stable with respect to thermal decarbonylation. Histidine challenge reaction of complexes 1 and 2 in phosphate buffer was examined by IR spectroscopy. In the presence of histidine, the rhenium pentacarbonyl isocyanide complex partially decomposes to form an unidentified yellow precipitate. Technetium analogue 1 is more stable under these conditions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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