Oxyphosphides are chemical compounds formally containing the group PO, with one phosphorus and one oxygen atom. The phosphorus and oxygen are not bound together as in phosphates or phosphine oxides, instead they are bound separately to the cations (metals), and could be considered as a mixed phosphide-oxide compound. So a compound with OmPn requires cations to balance a negative charge of 2m+3n. The cations will have charges of +2 or +3. The trications are often rare earth elements or actinides. They are in the category of oxy-pnictide compounds.

Many compounds are layered, containing two metals with the formula XZPO, with an XP layer alternating with a ZO layer.[1]

Examples

Examples include

  • Ca4P2O greenish gold, has space group I4mmm Z=2 and unit cell parameters a = 4.492, c = 15.087.[2]
  • Uranium–Copper Oxyphosphide UCuPO semimetallic antiferromagnetic tetragonal ZrCuSiAs-type a =3:7958 c=8:2456 V=118.80 Z=2 MW=348.55 density=9.743[1]
  • Thorium–Copper Oxyphosphide ThCuPO semimetallic tetragonal ZrCuSiAs-type a=3.8995 c=8.2939 V=126.12 Z=2 MW=342.56 density=9.02.[1]
  • NpCuOP[3]
  • Sr2ScCoPO3 high thermoelectric effect[4]
  • Sr2ScFePO3 superconducting 17K.[4][5]
  • LaNiOP Lanthanum nickel oxyphosphide[6]
  • YOFeP[7]
  • YOMnP[7]
  • YOCdP[7]
  • ROTPn (R = La, Nd, Sm, Gd; T = Mn, Fe, Co, Ni, Cu; Pn = P, As, Sb) [8]
  • YZnPO transparent red R3m Z=6 a = 3.946, c = 30.71[9]
  • LaZnPO transparent red ZrCuSiAs type[9]
  • DyZnPO transparent red R3m Z=6 a=3.8933 c=30.305[9]
  • PrZnPO transparent red dimorphic [9]
  • SmZnPO transparent red R3m Z=6 a = 3.946, c = 30.71[9]
  • NdZnPO transparent a = 3.885 c = 30.32[9]
  • GdZnPO transparent red R3m Z=6 a=3.922, c = 30.56[9]
  • CeZnPO transparent[9]
  • HoZnPO transparent dark red[9]
  • CeRuPO ferromagnetic below 15K. dimorphic[9]
  • CeOsPO antiferromagnetic[9]
  • La2AuP2O C2/m, a=15.373 b=4.274 c=10.092 β=131.02 V=500.3 dark-red-violet[10]
  • Ce2AuP2O C2/m, a = 15.152, b = 4.2463, c = 9.992 pm, β = 130.90° dark-red-violet [10]
  • Pr2AuP2O C2/m, a = 15.036, b = 4.228, c = 9.930 pm, β = 130.88(2)° dark-red-violet [10]
  • Nd2AuP2O C2/m, a = 15.0187, b = 4.2085, c = 9.903 pm, β = 131.12(1)° dark-red-violet [10]


Oxy-pnictides

Related compounds are the oxybismuthides[11] and oxyarsenides.

References

  1. 1 2 3 Sakai, Hironori; Tateiwa, Naoyuki; D. Matsuda, Tatsuma; Sugai, Takashi; Yamamoto, Etsuji; Haga, Yoshinori (15 July 2010). "Crystal Structure and Physical Properties of Uranium–Copper Oxyphosphide UCuPO". Journal of the Physical Society of Japan. 79 (7): 074721. Bibcode:2010JPSJ...79g4721H. doi:10.1143/JPSJ.79.074721.
  2. ↑ Hadenfeldt, C; Vollert, H.O (December 1988). "Darstellung und kristallstruktur der calciumpnictidoxide Ca4P2O und Ca4As2O". Journal of the Less Common Metals. 144 (2): 143–151. doi:10.1016/0022-5088(88)90126-9.
  3. ↑ Wells, Daniel M.; Ringe, Emilie; Kaczorowski, D.; Gnida, D.; André, G.; Haire, Richard G.; Ellis, Donald E.; Ibers, James A. (17 January 2011). "Structure, Properties, and Theoretical Electronic Structure of UCuOP and NpCuOP". Inorganic Chemistry. 50 (2): 576–589. doi:10.1021/ic101665g. PMID 21158457.
  4. 1 2 has layers of CoP alternating with Sr2ScO3.Okada, S; Kamihara, Y; Ohkubo, N; Ban, S; Matoba, M; Atou, T (17 December 2012). "Physical properties of the novel layered cobalt oxyphosphide Sr2ScCoPO3". Journal of Physics: Conference Series. 400 (2): 022091. Bibcode:2012JPhCS.400b2091O. doi:10.1088/1742-6596/400/2/022091.
  5. ↑ Ogino, Hiraku; Matsumura, Yutaka; Katsura, Yukari; Ushiyama, Koichi; Horii, Shigeru; Kishio, Kohji; Shimoyama, Jun-ichi (1 July 2009). "Superconductivity at 17 K in (Fe2P2)(Sr4Sc2O6): a new superconducting layered pnictide oxide with a thick perovskite oxide layer". Superconductor Science and Technology. 22 (7): 075008. arXiv:0903.3314. Bibcode:2009SuScT..22g5008O. doi:10.1088/0953-2048/22/7/075008. S2CID 118525802.
  6. ↑ Watanabe, Takumi; Yanagi, Hiroshi; Kamiya, Toshio; Kamihara, Yoichi; Hiramatsu, Hidenori; Hirano, Masahiro; Hosono, Hideo (September 2007). "Nickel-Based Oxyphosphide Superconductor with a Layered Crystal Structure, LaNiOP". Inorganic Chemistry. 46 (19): 7719–7721. doi:10.1021/ic701200e. PMID 17705374.
  7. 1 2 3 Moreau, Meghann A. "Flux Synthesis and Characterization of Layered Oxyphosphides in the YOMP System (M=Fe, Mn, Cd)". The 7th Annual NC State University Undergraduate Summer Research Symposium. Retrieved 16 January 2017.
  8. ↑ Lorenz, B.; Sasmal, K.; Chaudhury, R. P.; Chen, X. H.; Liu, R. H.; Wu, T.; Chu, C. W. (2008). "Pressure Effects on the Superconducting and Spin-Density-Wave States of the Newly Discovered Sm(O1-XFX)FeAs". arXiv:0804.1582v1 [cond-mat.supr-con].
  9. 1 2 3 4 5 6 7 8 9 10 11 Lincke, Hannes; Glaum, Robert; Dittrich, Volker; Tegel, Marcus; Johrendt, Dirk; Hermes, Wilfried; Möller, Manfred H.; Nilges, Tom; Pöttgen, Rainer (July 2008). "Magnetic, Optical, and Electronic Properties of the Phosphide OxidesREZnPO (RE = Y, La–Nd, Sm, Gd, Dy, Ho)". Zeitschrift für anorganische und allgemeine Chemie. 634 (8): 1339–1348. doi:10.1002/zaac.200800066.
  10. 1 2 3 4 Bartsch, Timo; Wiegand, Thomas; Ren, Jinjun; Eckert, Hellmut; Johrendt, Dirk; Niehaus, Oliver; Eul, Matthias; Pöttgen, Rainer (18 February 2013). "Phosphide Oxides M2AuP2O (M= La, Ce, Pr, Nd): Synthesis, Structure, Chemical Bonding, Magnetism, and 31P and 131La Solid State NMR". Inorganic Chemistry. 52 (4): 2094–2102. doi:10.1021/ic302475u. PMID 23374070.
  11. ↑ Kozhevnikov, V. L.; Leonidova, O. N.; Ivanovskii, A. L.; Shein, I. R.; Goshchitskii, B. N.; Kar’kin, A. E. (5 February 2009). "New superconductor with a layered crystal structure: Nickel oxybismuthide LaO1−δNiBi". JETP Letters. 87 (11): 649–651. Bibcode:2008JETPL..87..649K. doi:10.1134/S002136400811012X. S2CID 120451483.
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