Topic
Aquation
About: Aquation is a research topic. Over the lifetime, 1443 publications have been published within this topic receiving 17507 citations.
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TL;DR: In this article, the trichlorotrithioureachromium (III) complex and the chloride anation of trans-dichlorotsarquochromium complex ion were investigated in a strong acid medium.
10 citations
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10 citations
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TL;DR: In this article, rate coefficients for aquation of [Co(NH3)5X]2+(X = Br or Cl) in 10% ethanol solutions of some dicarboxylates and sulphate have been determined by spectrophotometry, potentiometric titrations, and e.m.f. changes with time of a cell comprising glass and silver halide electrodes.
Abstract: Rate coefficients (k) for aquation of [Co(NH3)5X]2+(X = Br or Cl) in 10% ethanol solutions of some dicarboxylates and sulphate have been determined by spectrophotometry, potentiometric titrations, and e.m.f. changes with time of a cell comprising glass and silver halide electrodes. Similar work has been done with the corresponding complexes of chromium(III) in aqueous solutions. The dissociation constants of the ion pairs formed have been obtained from the e.m.f.s of a cell comprising glass and calomel electrodes. A wide range of values of k(ion), k(ion pair), and dissociation constants has been obtained and in general there is a correlation between k(ion pair)/k(ion) and the dissociation constants for the dicarboxylate series. That for the sulphate series is characteristic of this ligand.
10 citations
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10 citations
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TL;DR: In this paper, the aquation reaction of Co(NH3)5Br2+ was studied kinetically with Ag+, Hg2+ and Tl3+ as inducing cations.
Abstract: The aquation reaction of Co(NH3)5Br2+ was studied kinetically with Ag+, Hg2+ and Tl3+ as inducing cations. Addition of polyethylene sulphonate, polystyrene sulphonate and polyphosphate markedly enhanced the reaction. The acceleration factor, ranging from 10 to 104, was dependent on the inducing cations, polyelectrolytes, their concentrations and the concentrations of foreign salts. The enthalpy of activation (ΔH[graphic omitted]) and the entropy of activation (ΔS[graphic omitted]) were decreased by addition of polyelectrolytes in the case of Ag+ and Hg2+, as has been observed previously, whereas ΔH[graphic omitted] was not influenced and ΔS[graphic omitted] increased in the case of Tl3+. The behaviour of Tl3+ was ascribed to the strong hydration of this cation.
10 citations