Substitution inertness of [Ir(H2O)6]3+ |
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| Affiliation: | 1. Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215123, PR China;2. School of Pharmacy & Pharmaceutical Sciences, Anhui University of Traditional Chinese Medicine, Hefei 230038, PR China;3. Department of Chemistry, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, PR China |
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| Abstract: | Ligand substitution properties of the recently characterized pale-yellow [Ir(H2O)6]3+ ion in perchlorate solutions, have been investigated. At 120°C in sealed tubes observations on the exchange with H218O are impaired by a spurious oxidation to purple Ir(IV). Over extended periods at 40°C the ion has been shown to be extremely inert, and the rate constants for substitution of Cl− into [Ir(H2O)6]3+ is estimated to be < 2 × 10−9 M−1 S−1. |
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