chemistry

Platinum hexafluoride

Platinum hexafluoride 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 Platinum hexafluoride rather than just read about it. In short: Platinum hexafluoride is the chemical compound with the formula PtF6, and is one of seventeen known binary hexafluorides. It is a dark-red volatile solid that forms a red gas.

Key takeaways

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

Reference excerpt

Platinum hexafluoride is the chemical compound with the formula PtF6, and is one of seventeen known binary hexafluorides. It is a dark-red volatile solid that forms a red gas. The compound is a unique example of platinum in the +6 oxidation state. With only four d-electrons, it is paramagnetic with a triplet ground state. PtF6 is a strong fluorinating agent and one of the strongest oxidants, capable of oxidising xenon and O2. PtF6 is octahedral in both the solid state and in the gaseous state. The Pt-F bond lengths are 185 picometers.

Synthesis PtF6 was first prepared by reaction of fluorine with platinum metal. This route remains the method of choice.

PtF6 can also be prepared by disproportionation of the pentafluoride (PtF5), with the tetrafluoride (PtF4) as a byproduct. The required PtF5 can be obtained by fluorinating PtCl2:

Hexafluoroplatinates Platinum hexafluoride can gain an electron to form the hexafluoroplatinate anion, PtF−6. It is formed by reacting platinum hexafluoride with relatively uncationisable elements and compounds, for example with xenon to form "XePtF6" (actually a mixture of XeFPtF5, XeFPt2F11, and Xe2F3PtF6), known as xenon hexafluoroplatinate. The discovery of this reaction in 1962 proved that noble gases form chemical compounds. Previous to the experiment with xenon, PtF6 had been shown to react with oxygen to form [O2]+[PtF6]−, dioxygenyl hexafluoroplatinate.

See also Hexafluoride Chloroplatinic acid

References

General reading Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.

Illustrations

Worked examples

Example 1 — a first encounter with Platinum hexafluoride

Start with the simplest possible case. Write down what Platinum hexafluoride 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 Platinum hexafluoride 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 Platinum hexafluoride 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 Platinum hexafluoride

In research: Platinum hexafluoride 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 Platinum hexafluoride 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: Platinum hexafluoride is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fluorinating agents, Gases with color, Hexafluorides, so understanding it makes those chapters shorter.
In everyday life: Look for Platinum hexafluoride 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 Platinum hexafluoride in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Platinum hexafluoride 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 Platinum hexafluoride out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Platinum hexafluoride in simple terms?

Platinum hexafluoride is the chemical compound with the formula PtF6, and is one of seventeen known binary hexafluorides. It is a dark-red volatile solid that forms a red gas.

Why does Platinum hexafluoride 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 Platinum hexafluoride?

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 Platinum hexafluoride.