chemistry

Tetrakis(methylammonium) hexachloroferrate(III) chloride

Tetrakis(methylammonium) hexachloroferrate(III) chloride 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 Tetrakis(methylammonium) hexachloroferrate(III) chloride rather than just read about it. In short: Tetrakis(methylammonium) hexachloroferrate(III) chloride is a chemical compound with the formula (CH3NH3)4[FeCl6]Cl. Properties The compound has the form of hygroscopic orange crystals.

Key takeaways

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

Reference excerpt

Tetrakis(methylammonium) hexachloroferrate(III) chloride is a chemical compound with the formula (CH3NH3)4[FeCl6]Cl.

Properties The compound has the form of hygroscopic orange crystals. The hexachloroferrate(III) anion is a coordination complex centred on an iron atom in the +3 oxidation state that is covalently bound to six chloride atoms arranged octahedrally around it. Interstitial chloride anions are each surrounded by four methylammonium cations, with hydrogen bond-like links between the ammonium cations and the ligands of the hexachloroferrate(III) moieties. Each [(CH3NH3)4Cl]3+ unit balances a [FeCl6]3–, analogous to how hexachloroferrate(III) forms stable compounds with various large triply-cationic atoms and other triply-cationic complexes.

Synthesis The compound is synthesised by reacting methylammonium chloride, CH3NH3Cl, with anhydrous iron(III) chloride and adding hydrochloric acid with heating. Crystals of the product, which precipitate as the solvent evaporates, are collected and dried using vacuum desiccation.

Infrared analysis There is a series of bands from 3129 to 2830 cm−1 that represent stretching modes of the nitrogen–hydrogen bonds. In addition, a distinct peak is found at 2517 cm−1, whereas the corresponding signal for methylammonium chloride is at 2476 cm−1. The 31 cm−1 shift is due to the coordination of an ammonium hydrogen with the hexachloroferrate(III).

Notes

Illustrations

Worked examples

Example 1 — a first encounter with Tetrakis(methylammonium) hexachloroferrate(III) chloride

Start with the simplest possible case. Write down what Tetrakis(methylammonium) hexachloroferrate(III) chloride 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 Tetrakis(methylammonium) hexachloroferrate(III) chloride 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 Tetrakis(methylammonium) hexachloroferrate(III) chloride 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 Tetrakis(methylammonium) hexachloroferrate(III) chloride

In research: Tetrakis(methylammonium) hexachloroferrate(III) chloride 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 Tetrakis(methylammonium) hexachloroferrate(III) chloride 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: Tetrakis(methylammonium) hexachloroferrate(III) chloride is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chloro complexes, Chlorometallates, Iron complexes, so understanding it makes those chapters shorter.
In everyday life: Look for Tetrakis(methylammonium) hexachloroferrate(III) chloride 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 Tetrakis(methylammonium) hexachloroferrate(III) chloride in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tetrakis(methylammonium) hexachloroferrate(III) chloride 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 Tetrakis(methylammonium) hexachloroferrate(III) chloride out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tetrakis(methylammonium) hexachloroferrate(III) chloride in simple terms?

Tetrakis(methylammonium) hexachloroferrate(III) chloride is a chemical compound with the formula (CH3NH3)4[FeCl6]Cl. Properties The compound has the form of hygroscopic orange crystals.

Why does Tetrakis(methylammonium) hexachloroferrate(III) chloride 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 Tetrakis(methylammonium) hexachloroferrate(III) chloride?

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 Tetrakis(methylammonium) hexachloroferrate(III) chloride.