Abstract
Abstract The O–H vs O⋯O correlation in OHO hydrogen bonds is briefly reviewed based on the development during these twenty years and the geometric isotope effect Δ R is revised including the new data. It is pointed out that the following still remains to be settled: (1) whether or not the O–H distances in asymmetric bonds for the same O⋯O distance scatter in short hydrogen bonds at low temperature; (2) whether there exists or not the exceptional compounds that exhibit the extraordinarily large geometric isotope effect (∼0.1 A); (3) where the critical hydrogen-bond distance is located; and (4) the peculiar hydrogen-bond geometry and its origin in high-pressure ice.
Published Version
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