chemistry

Magnesium iron hexahydride

Magnesium iron hexahydride 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 Magnesium iron hexahydride rather than just read about it. In short: Magnesium iron hexahydride is an inorganic compound with the formula Mg2FeH6. It is a green diamagnetic solid that is stable in dry air.

Key takeaways

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

Reference excerpt

Magnesium iron hexahydride is an inorganic compound with the formula Mg2FeH6. It is a green diamagnetic solid that is stable in dry air. The material is prepared by heating a mixture of powdered magnesium and iron under high pressures of hydrogen:

2 Mg + Fe + 3 H2 → Mg2FeH6

Structure

The compound is isomorphous with K2PtCl6, i.e., their connectivities and structures are the same. The [FeH6]4− centre adopts octahedral molecular geometry with Fe-H distances of 1.56 Å. The Mg2+ centres are bound to the faces of the octahedron, with Mg-H distances of 2.38 Å. Several related compounds are known including salts of [RuH6]4−, [OsH6]4−, and [PtH6]2− anions.

Soluble derivatives Although Mg2FeH6 is not soluble in ordinary solvents, related derivatives are. For example, the related salt Mg4Br4(THF)4FeH6 is soluble as are related alkoxides. Measurements on such compounds suggest that the hydride ligand exerts a weaker crystal field than cyanide.

References

Illustrations

Worked examples

Example 1 — a first encounter with Magnesium iron hexahydride

Start with the simplest possible case. Write down what Magnesium iron hexahydride 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 Magnesium iron hexahydride 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 Magnesium iron hexahydride 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 Magnesium iron hexahydride

In research: Magnesium iron hexahydride 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 Magnesium iron hexahydride 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: Magnesium iron hexahydride is common in secondary-school and first-year university syllabi. It links to neighbouring topics Iron(II) compounds, Iron complexes, Magnesium compounds, so understanding it makes those chapters shorter.
In everyday life: Look for Magnesium iron hexahydride 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 “Magnesium iron hexahydride” →

Affiliate

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

How to study Magnesium iron hexahydride in 20 minutes

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

Frequently asked questions

What is Magnesium iron hexahydride in simple terms?

Magnesium iron hexahydride is an inorganic compound with the formula Mg2FeH6. It is a green diamagnetic solid that is stable in dry air.

Why does Magnesium iron hexahydride 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 Magnesium iron hexahydride?

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 Magnesium iron hexahydride.