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UPTe, ThPTe and U2PTe2O: Actinide Pnictide Chalcogenides with Diphosphide Anions

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons126841

Schwarz,  Ulrich
Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Stolze, K., Isaeva, A., Schwarz, U., & Doert, T. (2015). UPTe, ThPTe and U2PTe2O: Actinide Pnictide Chalcogenides with Diphosphide Anions. European Journal of Inorganic Chemistry, (5), 778-785. doi:10.1002/ejic.201402951.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0025-B74D-B
Abstract
Crystal structure determination of UPTe revealed a UGeTe derivative structure with a pseudo-tetragonal unit cell with lattice parameters a = 410.1(1) pm and c = 1697.1(1) pm at 120(2) K. ThPTe can be regarded as isotypic according to powder X-ray diffraction data, its pseudo-tetragonal lattice parameters are a = 425.05(1) pm and c = 1726.8(1) pm at 296(1) K. Real-space topological analysis of the chemical bonding and Raman data reveal the presence of P-2 units. U2PTe2O can be considered as a partially oxidised phosphide telluride with a pseudo-tetragonal unit cell, a = 403.7(1) pm, and c = 3206.8(10) pm at 120(2) K. Single-crystal X-ray diffraction data of UPTe and U2PTe2O indicate an ordered orientation of the P-2 dumbbells leading to a monoclinic distortion, which implies a symmetry decrease to space group I11m.