ArticleslgStudy

science

Transition metal ether complex

Transition metal ether complex is a science 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 Transition metal ether complex rather than just read about it. In short: In chemistry, a transition metal ether complex is a coordination complex consisting of a transition metal bonded to one or more ether ligand. The inventory of complexes is extensive.

Transition metal ether complex — main illustration
Transition metal ether complex — illustration

Key takeaways

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

Reference excerpt

In chemistry, a transition metal ether complex is a coordination complex consisting of a transition metal bonded to one or more ether ligand. The inventory of complexes is extensive. Common ether ligands are diethyl ether and tetrahydrofuran. Common chelating ether ligands include the glymes, dimethoxyethane (dme) and diglyme, and the crown ethers. Being lipophilic, metal-ether complexes often exhibit solubility in organic solvents, a property of interest in synthetic chemistry. In contrast, the diether 1,4-dioxane is generally a bridging ligand.

Bonding, structure, reactions

Ethers are L-type ligands. They are σ-donors that exert weak field ligands. They resemble water ligands as seen in aquo complexes. They do not, however, readily participate in hydrogen bonding. The ether oxygen is nearly trigonal planar in its complexes. Being weakly basic, ether ligands tend to be easily displaceable. Otherwise, ether ligands are relatively unreactive. Cyclic ethers such as thf can ring-open or even deoxygenated when bound to highly electrophilic metal halides. Thus treatment of tungsten hexachloride with one equivalent of thf gives 1,4-dichlorobutane:

WCl6 + OC4H8 → WOCl4 + ClCH2CH2CH2CH2Cl At higher concentrations of thf, polytetrahydrofuran is produced.

Examples

Homoleptic complexes Ethers are relatively bulky ligands, thus homoleptic (all ligands being the same) ether complexes are uncommon. Examples often feature weakly coordinating anions such as B(ArF)−4 and Al(ORF)−4.

[V(thf)6](BArF4)2 [Mn(thf)6](Mn(CO)5]2 [Fe(thf)6][BArF4]2 [Ni(thf)6][Al(ORF)4]2

Metal halide complexes

Metal chloride-tetrahydrofuran complexes are especially studied. These compounds are reagents because they are "organic-soluble" source of anhydrous halides. The following trends are observed: for diethyl ether forms isolable complexes with only highly electrophilic halides, thf forms more extensive set of complexes with a more extensive set of metal chlorides. Heavier, late metal halides (RuCl3 to CdCl2 and OsCl4 to HgCl2) do not form isolable complexes with simple ethers.

Metal carbonyl complexes M(CO)5(thf) (M = Cr, Mo, W) Mo(CO)3(diglyme)

Related topics Ethers are widely used as ligands beyond transition metal chemistry. Few alkali metal halides form isolable adducts, but the divalent alkaline earth complexes are well known, such as BeCl2(OEt2)2.

References

Illustrations

Transition metal ether complex: Structure of the ether complex HfCl4(thf)2fwn[1]
Structure of the ether complex HfCl4(thf)2fwn[1]
Transition metal ether complex: In almost all of its complexes, dioxane is a bridging, not chelating, ligand. Structure of the coordination polymer of cobalt(II) chloride and 1,4-dioxane.[3]
In almost all of its complexes, dioxane is a bridging, not chelating, ligand. Structure of the coordination polymer of cobalt(II) chloride and 1,4-dioxane.[3]
Transition metal ether complex: Structure of NiI2(dme)2 as determined by X-ray crystallography. The sum of the angles at O is 352°, indicating a nearly planar ether oxygen. Color code: O = red, I = purple, Ni = blue, C = black.[10]
Structure of NiI2(dme)2 as determined by X-ray crystallography. The sum of the angles at O is 352°, indicating a nearly planar ether oxygen. Color code: O = red, I = purple, Ni = blue, C = black.[10]
Transition metal ether complex: Structure of FeCl3(diethylether)2.[11] Color code: Cl=green, Fe = blue, O = red.
Structure of FeCl3(diethylether)2.[11] Color code: Cl=green, Fe = blue, O = red.

Worked examples

Example 1 — a first encounter with Transition metal ether complex

Start with the simplest possible case. Write down what Transition metal ether complex claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Transition metal ether complex 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 Transition metal ether complex 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 Transition metal ether complex

In research
Transition metal ether complex appears in science 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 Transition metal ether complex 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
Transition metal ether complex is common in secondary-school and first-year university syllabi. It links to neighbouring topics Coordination complexes, Ethers, so understanding it makes those chapters shorter.
In everyday life
Look for Transition metal ether complex 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.

Affiliate

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

How to study Transition metal ether complex in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Transition metal ether complex means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Transition metal ether complex out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Transition metal ether complex in simple terms?

In chemistry, a transition metal ether complex is a coordination complex consisting of a transition metal bonded to one or more ether ligand. The inventory of complexes is extensive.

Why does Transition metal ether complex matter?

Because it connects several science 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 Transition metal ether complex?

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 Transition metal ether complex.

Tags

  • Coordination complexes
  • Ethers

Keep exploring