chemistry

Potassium diplatinum(II) tetrakispyrophosphite

Potassium diplatinum(II) tetrakispyrophosphite is a chemistry 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 Potassium diplatinum(II) tetrakispyrophosphite rather than just read about it. In short: Potassium diplatinum(II) tetrakispyrophosphite (abbreviated as [Pt2(pop)4]4−) is the inorganic compound with the formula K4[Pt2(HO2POPO2H)4]. It is a water-soluble yellow salt.

Key takeaways

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

Reference excerpt

Potassium diplatinum(II) tetrakispyrophosphite (abbreviated as [Pt2(pop)4]4−) is the inorganic compound with the formula K4[Pt2(HO2POPO2H)4]. It is a water-soluble yellow salt. The compound has a long-lived, strongly luminescent excited state, with an emission maximum at ~510 nm and a lifetime near 10 μs.

Structure The anion is an example of the Chinese lantern structure. The two square-planar platinum(II) centers are bridged by four pyrophosphito (HO(O)POP(O)OH2-) ligands. The ligands interact via hydrogen bonds between the POH and P=O group. The Pt---Pt separation is 293 pm for the dihydrate. In the Pt(III) dichloride, the Pt-Pt distance is 270 pm, indicating Pt-Pt bonding.

Synthesis and reactions The complex is prepared by heating a mixture of potassium tetrachloroplatinate and phosphorous acid:

2 K2PtCl4 + 8 H3PO3 → K4[Pt2(HO2POPO2H)4] + 8 HCl + 4 H2O Several quat salt derivatives are known. The anion reacts with boron trifluoride to give the BF2-capped complex [Pt2(P2PO5)4(BF2)8]4-. The compound reacts with halogens to give Pt(III) dimers:

K4[Pt2(HO2POPO2H)4 + Cl2 → K4[Pt2(HO2POPO2H)4Cl2] With substoichiometric halogen, linear chain compounds result.

References

Illustrations

Worked examples

Example 1 — a first encounter with Potassium diplatinum(II) tetrakispyrophosphite

Start with the simplest possible case. Write down what Potassium diplatinum(II) tetrakispyrophosphite claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Potassium diplatinum(II) tetrakispyrophosphite 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 Potassium diplatinum(II) tetrakispyrophosphite 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 Potassium diplatinum(II) tetrakispyrophosphite

In research: Potassium diplatinum(II) tetrakispyrophosphite appears in chemistry 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 Potassium diplatinum(II) tetrakispyrophosphite 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: Potassium diplatinum(II) tetrakispyrophosphite is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chemical compounds containing metal–metal bonds, Platinum(II) compounds, Potassium compounds, so understanding it makes those chapters shorter.
In everyday life: Look for Potassium diplatinum(II) tetrakispyrophosphite 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Potassium diplatinum(II) tetrakispyrophosphite” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Potassium diplatinum(II) tetrakispyrophosphite in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Potassium diplatinum(II) tetrakispyrophosphite 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 Potassium diplatinum(II) tetrakispyrophosphite out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Potassium diplatinum(II) tetrakispyrophosphite in simple terms?

Potassium diplatinum(II) tetrakispyrophosphite (abbreviated as [Pt2(pop)4]4−) is the inorganic compound with the formula K4[Pt2(HO2POPO2H)4]. It is a water-soluble yellow salt.

Why does Potassium diplatinum(II) tetrakispyrophosphite matter?

Because it connects several chemistry 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 Potassium diplatinum(II) tetrakispyrophosphite?

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 Potassium diplatinum(II) tetrakispyrophosphite.