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Issue 75, 2018
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The p-sc structure in phosphorus: bringing order to the high pressure phases of group 15 elements

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Abstract

Black phosphorus was studied by state-of-the-art synchrotron X-ray diffraction in a Diamond Anvil Cell during room temperature compression in the presence of He, H2, N2 and Daphne Oil 7474. The data demonstrate that the existence of the pseudo simple-cubic (p-sc) structure above 10.5 GPa is an intrinsic feature of P independent from the pressure transmitting medium. In the case of He, the pressure evolution of the lattice parameters and unit cell volume of P across the A17, A7 and p-sc structures was obtained and the corresponding EOS derived, providing a deeper insight on the recently reported p-sc structure. The results presented in this letter highlight the key role of the s–p orbital mixing in the formation and stabilization of the p-sc structure up to ∼30 GPa, solving apparent contradictions emerging from previous literature and finally bringing order to the sequence of the high pressure A7 layered structure in group 15 elements.

Graphical abstract: The p-sc structure in phosphorus: bringing order to the high pressure phases of group 15 elements

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Publication details

The article was received on 15 Apr 2018, accepted on 28 May 2018 and first published on 22 Aug 2018


Article type: Communication
DOI: 10.1039/C8CC03013H
Citation: Chem. Commun., 2018,54, 10554-10557
  • Open access: Creative Commons BY-NC license
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    The p-sc structure in phosphorus: bringing order to the high pressure phases of group 15 elements

    D. Scelta, A. Baldassarre, M. Serrano-Ruiz, K. Dziubek, A. B. Cairns, M. Peruzzini, R. Bini and M. Ceppatelli, Chem. Commun., 2018, 54, 10554
    DOI: 10.1039/C8CC03013H

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