Oxyphosphides are chemical compounds formally containing the group PO, with one

phosphorus Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Ea ...

and one

oxygen Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as we ...

atom. The phosphorus and oxygen are not bound together as in

phosphate In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid . The phosphate or orthophosphate ion is derived from phosph ...

s or

phosphine oxide Phosphine oxides are phosphorus compounds with the formula OPX3. When X = alkyl or aryl, these are organophosphine oxides. Triphenylphosphine oxide is an example. An inorganic phosphine oxide is phosphoryl chloride (POCl3). Structure and bonding ...

s, instead they are bound separately to the cations (metals), and could be considered as a mixed

phosphide In chemistry, a phosphide is a compound containing the ion or its equivalent. Many different phosphides are known, with widely differing structures. Most commonly encountered on the binary phosphides, i.e. those materials consisting only of phos ...

- oxide compound. So a compound with O_mP_n requires

cation An ion () is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by conve ...

s 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

actinide The actinide () or actinoid () series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The actinide series derives its name from the first element in the series, actinium. The inf ...

s. 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.

Examples

Examples include *Ca₄P₂O greenish gold, has space group ''I''4''mmm'' Z=2 and unit cell parameters a = 4.492, c = 15.087. *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 *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. *NpCuOP *Sr₂ScCoPO₃ high

thermoelectric The thermoelectric effect is the direct conversion of temperature differences to electric voltage and vice versa via a thermocouple. A thermoelectric device creates a voltage when there is a different temperature on each side. Conversely, when ...

effect has layers of CoP alternating with Sr₂ScO₃. *Sr₂ScFePO₃ superconducting 17K. *LaNiOP Lanthanum nickel oxyphosphide *YOFeP *YOMnP *YOCdP *ROTPn (R = La, Nd, Sm, Gd; T = Mn, Fe, Co, Ni, Cu; Pn = P, As, Sb) *YZnPO transparent red ''R'm'' Z=6 a = 3.946, c = 30.71 *LaZnPO transparent red ZrCuSiAs type *DyZnPO transparent red ''R'm'' Z=6 a=3.8933 c=30.305 *PrZnPO transparent red dimorphic *SmZnPO transparent red ''R'm'' Z=6 a = 3.946, c = 30.71 *NdZnPO transparent a = 3.885 c = 30.32 *GdZnPO transparent red ''R'm'' Z=6 a=3.922, c = 30.56 *CeZnPO transparent *HoZnPO transparent dark red *CeRuPO ferromagnetic below 15K. dimorphic *CeOsPO antiferromagnetic

related phosphide oxides

*La₂AuP₂O C2/m, a=15.373 b=4.274 c=10.092 β=131.02 V=500.3 dark-red-violet *Ce₂AuP₂O C2/m, a = 15.152, b = 4.2463, c = 9.992 pm, β = 130.90° dark-red-violet *Pr₂AuP₂O C2/m, a = 15.036, b = 4.228, c = 9.930 pm, β = 130.88(2)° dark-red-violet *Nd₂AuP₂O C2/m, a = 15.0187, b = 4.2085, c = 9.903 pm, β = 131.12(1)° dark-red-violet

Oxy-pnictides

Related compounds are the

oxybismuthide Oxybismuthides or bismuthide oxides are chemical compounds formally containing the group BiO, with one bismuth and one oxygen atom. The bismuth and oxygen are not bound together as in bismuthates, instead they make a separate presence bound to the ...

s and

oxyarsenide Oxyarsenides or arsenide oxides are chemical compounds formally containing the group AsO, with one arsenic and one oxygen atom. The arsenic and oxygen are not bound together as in arsenates or arsenites, instead they make a separate presence bound ...

References

{{Phosphides Phosphides Oxides