Crystal Structure
Anomalies of the crystal structure of ice -- the extraordinary variety of ice forms and unusual NMR and diffraction properties.
Advanced Locked #4
Solid water exists in a large variety of crystalline and amorphous structures
Ice forms more stable and metastable crystal structures than any other known material.
Specialist Locked #33
The NMR spin-lattice relaxation time is very short at low temperatures
The T1 relaxation time in water shows anomalous behavior at low temperatures.
Specialist Locked #34
The NMR shift reaches a maximum at low temperatures
The chemical shift in the NMR spectrum of water shows a maximum at supercooled temperatures.
Advanced Locked #35
The refractive index of water has a maximum just below 0 degrees Celsius
The refractive index reaches a maximum near the freezing point instead of falling monotonically.
Advanced Locked #51
The acid constants of weak acids have temperature minima
The dissociation constants of weak acids in water show unusual temperature minima.
Advanced Locked #52
X-ray diffraction reveals an unusually detailed structure
X-ray diffraction patterns of water show more structural detail than expected for a simple liquid.