Linear-free energy relationships in solid-state reactions: I. Reactions of cobalt acetate with substituted aniline hydrochlorides |
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| Institution: | 1. STMicroelectronics, Stradale Primosole, 50, 95121 Catania, Italy;2. LPE S.p.a., Via Falzarego, 8, 20021 Baranzate (MI), Italy;3. LPE S.p.a., 16° Strada, Zona Industriale, 95121 Catania, Italy;4. STMicroelectronics Silicon Carbide AB, Ramshällsvägen, 15, 602 38 Norrköping, Sweden;5. Consiglio Nazionale delle Ricerche – Istituto per la Microelettronica e Microsistemi, Strada VIII, 5, 95121 Catania, Italy;1. Metallation, Molecular Complexes and Applications Team, Faculty of Sciences, University Moulay, Ismail, BP 11201 Zitoune, Meknes-Morocco;2. Laboratory of Materials Chemistry and Biotechnology of Natural Products, Faculty of Science, University Moulay Ismail, Meknes-Morocco |
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| Abstract: | Solid-solid reactions of anhydrous cobalt(II) acetate with various substituted aniline hydrochlorides have been studied. The reaction products, CoCl2(4-XC6H4NH2)2, where X = OCH3, CH3, F, Br, or Cl, have been characterized. The kinetics have been studied by noting the thickness of the colored boundary of the product. The values of energy of activation are 162.3, 148.6, 120.4, 102.9, and 104.6 kJ mole−1 for X = OCH3, CH3, F, Br, and Cl, respectively. A plot of Hammett's constant σ versus log k is linear with values of ϱ 2.321, 2.012, 1.781, and 1.615 at 353, 358, 363, and 368 K, respectively. |
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