Stepwise dissociation of ion pairs by water molecules: cation-dependent separation mechanisms between carboxylate and alkali-earth metal ions
PHYSICAL CHEMISTRY CHEMICAL PHYSICS(2022)
摘要
Microhydrated H-2-tagged ion pairs (Ca2+, AcO-)(H2O)(n=0-8) and (Ba2+, AcO-)(H2O)(n=0-5) are investigated by IR photodissociation laser spectroscopy and DFT-D frequency calculations. The detailed picture of the first steps of ion dissociation reveals two mechanisms, where water molecules promote dissociation either directly or indirectly depending on the nature of the cation.
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关键词
ions,dissociation pairs,water molecules,stepwise dissociation,cation-dependent,alkali-earth
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