science

Oxyphosphides

Oxyphosphides is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Oxyphosphides rather than just read about it. In short: 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.

Key takeaways

Oxyphosphides belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Oxyphosphides to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Oxyphosphides from memory before moving on to harder problems.

Reference excerpt

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.

Examples Examples include

Ca4P2O greenish gold, has space group I4mmm 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 effect 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 R3m Z=6 a = 3.946, c = 30.71 LaZnPO transparent red ZrCuSiAs type DyZnPO transparent red R3m Z=6 a=3.8933 c=30.305 PrZnPO transparent red dimorphic SmZnPO transparent red R3m Z=6 a = 3.946, c = 30.71 NdZnPO transparent a = 3.885 c = 30.32 GdZnPO transparent red R3m 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 oxybismuthides and oxyarsenides.

References

Worked examples

Example 1 — a first encounter with Oxyphosphides

Start with the simplest possible case. Write down what Oxyphosphides claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Oxyphosphides before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Oxyphosphides ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Oxyphosphides

In research: Oxyphosphides appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Oxyphosphides in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Oxyphosphides is common in secondary-school and first-year university syllabi. It links to neighbouring topics Oxides, Phosphides, so understanding it makes those chapters shorter.
In everyday life: Look for Oxyphosphides outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Oxyphosphides in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Oxyphosphides means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Oxyphosphides out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Oxyphosphides in simple terms?

Why does Oxyphosphides matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Oxyphosphides?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Oxyphosphides.