Volume 90 Issue 2 | p. 8 | News of The Week
Issue Date: January 9, 2012

Another Form Of Oxygen

Computational chemistry: Model predicts insulating spiral-chain O4 structure at high pressures
Department: Science & Technology
News Channels: Materials SCENE
Keywords: oxygen, high pressure, solid, insulator

At pressures of nearly 2 terapascals (TPa), molecular oxygen forms a spiral-chain O4 structure with unusual properties, a computational study predicts (Proc. Natl. Acad. Sci. USA, DOI: 10.1073/pnas.1119375109).

Yanming Ma of Jilin University, in Changchun, China; Ho-kwang Mao of the Carnegie Institution of Washington; and coworkers used a computational method known as CALYPSO (crystal structure analysis by particle-swarm optimization) to search . . .

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