Ice one-h, ICE VII, ICE VIII, ICE IX:
https://gizmodo.com/scientists-observe-incredible-new-kind-of-ice-thought-t-1822761008
Citando:
"Water molecules look like oxygen atoms each connected to two hydrogen atoms in a wide V. When they freeze into ice, they can arrange into lots of different crystal structures, based on the temperature and pressure during freezing. Regular water ice is called ice Ih, ice one-h, and its molecules line up into hexagons. You’ve probably heard of fictional ice IX, ice nine, from Kurt Vonnegut’s Cat’s Cradle that turns everything it touches into ice nine. Ice IX really exists but is not dangerous."
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