Ice T2 has been synthesized! (University of Tokyo)

More than 20 different crystal structures of ice have been discovered across various temperature and pressure ranges. This is considered an unusually large number of polymorphs for a pure substance. Of these, 12 were discovered by the 20th century, and the remaining 8 have been found since the 21st century, with the pace of discovery remarkably accelerating. Following the synthesis of plastic ice reported at the beginning of this year, there has been a report of the successful synthesis of ice T2, which our group predicted in 2018.