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The Physical Origin of Chemical Phenomena - Interpretation of Acidity, Basicity and Hydride Affinity by Trichotomy Paradigm

Some of the most important aspects of modeling in chemistry are discussed in detail. It is argued that interpretive side of (quantum) chemistry is indispensable, since it gives sense to myriads of experimental and computational results. The usefulness of some physical modeling is illustrated by trichotomy approach in rationalizing acidity, basicity and hydride affinities of neutral organic compounds. According to trichotomy paradigm the simple chemical reaction of protonation and H- attachment can be decomposed into three separate sequential steps, which in turn mirror the initial state, intermediate stage and final state effects. Ample evidence is given, which convincingly shows that trichotomy approach has some distinct advantages in interpreting aforementioned properties that belong to the most important ones in chemistry and biochemistry.

proton affinity; basicity; acidity; hydride affinity; superbases; superacids

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