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. 2016 Nov 18;6:37528. doi: 10.1038/srep37528

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Copyright © 2016, The Author(s)

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(a) Building block of K₄ phosphorus. (b)–(c) Crystal structure of K₄ phosphorus viewed from the [100] and [010] directions. (d) Perspective view of the conventional unit cell of K₄ phosphorus. (e) and (f) Two different perspective views of a 2 × 2 × 2 supercell to display the charity.