chemistry

Tetrakis(dimethylamino)ethylene

Tetrakis(dimethylamino)ethylene 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(dimethylamino)ethylene rather than just read about it. In short: Tetrakis(dimethylamino)ethylene (TDAE) is an organic compound with the formula ((CH3)2N)2C=C(N(CH3)2)2, It is a colorless liquid. It is classified as an enamine.

Key takeaways

Tetrakis(dimethylamino)ethylene 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(dimethylamino)ethylene to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tetrakis(dimethylamino)ethylene from memory before moving on to harder problems.

Reference excerpt

Tetrakis(dimethylamino)ethylene (TDAE) is an organic compound with the formula ((CH3)2N)2C=C(N(CH3)2)2, It is a colorless liquid. It is classified as an enamine. Primary and secondary enamines tend to isomerize, but tertiary enamines are kinetically stable. One unusual feature of TDAE is that it is a tetra-enamine. The pi-donating tendency of the amine groups strongly enhances the basicity of the molecule, which does exhibit properties of a typical alkene.

Reactions TDAE reacts with oxygen in a chemiluminescent reaction to give tetramethylurea. The initial intermediate is (2+2) adduct, a 1,2-dioxetane. This species decomposes to electronically excited tetramethylurea. This returns to the ground state is accompanied by emission of green light with a maximum at 515 nm.

TDAE is an electron donor with E = 1.06 V vs Fc+/0. TDAE has been examined as a reductant in coupling reactions. As one of many of examples of its redox behavior forms a charge-transfer salt with buckminsterfullerene:

C2(N(CH3)2)4 + C60 → [C2(N(CH3)2)4+][C60−] Oxidation affords a dication.

Structure Crystallographic analysis show that TDAE is a highly distorted alkene, the dihedral angle for the two N2C ends is 28°. The C=C distance is alkene-like, 135 pm. The nearly isostructural tetraisopropylethylene also has a C=C distance of 135 pm, but its C6 core is planar. In contrast, [TDAE]2+ is an alkane with multi-C-N bonds.

Synthesis It is available by pyrolysis of tris(dimethylamino)methane or from chlorotrifluoroethene and dimethylamine.

References

Illustrations

Worked examples

Example 1 — a first encounter with Tetrakis(dimethylamino)ethylene

Start with the simplest possible case. Write down what Tetrakis(dimethylamino)ethylene 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(dimethylamino)ethylene 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(dimethylamino)ethylene 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(dimethylamino)ethylene

In research: Tetrakis(dimethylamino)ethylene 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(dimethylamino)ethylene 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(dimethylamino)ethylene is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chemiluminescence, Dimethylamino compounds, Enamines, so understanding it makes those chapters shorter.
In everyday life: Look for Tetrakis(dimethylamino)ethylene 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(dimethylamino)ethylene in 20 minutes

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

Frequently asked questions

What is Tetrakis(dimethylamino)ethylene in simple terms?

Tetrakis(dimethylamino)ethylene (TDAE) is an organic compound with the formula ((CH3)2N)2C=C(N(CH3)2)2, It is a colorless liquid. It is classified as an enamine.

Why does Tetrakis(dimethylamino)ethylene 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(dimethylamino)ethylene?

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(dimethylamino)ethylene.