science

Transition metal sulfoxide complex

Transition metal sulfoxide 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 sulfoxide complex rather than just read about it. In short: A transition metal sulfoxide complex is a coordination complex containing one or more sulfoxide ligands. The inventory is large.

Key takeaways

Transition metal sulfoxide 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 sulfoxide complex to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Transition metal sulfoxide complex from memory before moving on to harder problems.

Reference excerpt

A transition metal sulfoxide complex is a coordination complex containing one or more sulfoxide ligands. The inventory is large.

Scope of sulfoxide ligands The most common sulfoxide ligand is dimethyl sulfoxide (dmso). Many sulfoxides are known because an enormous range of organic substituents are possible. When the two substituents differ, the ligand is chiral. Chiral sulfoxides are configurationally stable. One example is methyl phenyl sulfoxide.

Structures

Sulfoxides can bind to metals by the oxygen atom or by sulfur. This dichotomy is called linkage isomerism. O-bonded sulfoxide ligands are far more common, especially for 1st row metals. S-bonded sulfoxides are only found for soft metal centers, such as Ru(II). Complexes with both O- and S-bonded sulfoxide ligands are known. In some cases, sulfoxides are bridging ligands, with S bonded to one metal and O bonded to the other.

Synthesis and reactions Being a polar solvent with a high dielectric constants, dmso dissolves many metal salts to give the corresponding complexes. Other ligand-solvent combinations include acetonitrile and water, which respectively form metal-acetonitrile complexes and metal aquo complexes. Treatment of thioether complexes with peroxide reagents gives sulfoxide complexes. In rare cases, sulfoxide complexes are prepared by S-alkylation of sulfenito complexes. Metal thioether complexes are susceptible to sulfoxidation with dimethyldioxirane.

Reactions Being weakly basic, sulfoxide ligands are generally labile, i.e. they are rapidly displaced by other more basic ligands. O-bonded sulfoxide ligands are susceptible to oxidation at sulfur. In this way, the weakly bonded ligand is converted into a leaving group, such as dimethylsulfone. Since dmso is susceptible to deprotonation by strong base, cationic dmso complexes might be expected to undergo H-D exchange under basic conditions. Such behavior is not observed even for the trication [Co(NH3)5(dmso)]3+. Several metal sulfoxide complexes have been investigated as catalysts. The molybdoenzyme DMSO reductase catalyzes the reduction of dmso to dimethyl sulfide.

Examples Several homoleptic octahedral complexes of sulfoxides have been characterized by X-ray crystallography. These include the [M(dmso)6]2+ complexes for M = Cr(III), Mn(II), Fe(II), Fe(III), Co(II), Co(III), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II). All such derivatives feature O-bonded sulfoxides. The tricationic complex in [Rh(dmso)6](O3SCF3)3 features one S-bonded and five O-bonded sulfoxide ligands. The complex [Cu(Ph2SO)4]2+ is square planar, in contrast to the derivative with dmso ligands. The square planar d8 complex [Rh(dmso)4]+ features a pairs of S- and O-bonded sulfoxide ligands.

References

Illustrations

Worked examples

Example 1 — a first encounter with Transition metal sulfoxide complex

Start with the simplest possible case. Write down what Transition metal sulfoxide 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 sulfoxide 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 sulfoxide 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 sulfoxide complex

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

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How to study Transition metal sulfoxide complex in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Transition metal sulfoxide complex 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.
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Frequently asked questions

What is Transition metal sulfoxide complex in simple terms?

A transition metal sulfoxide complex is a coordination complex containing one or more sulfoxide ligands. The inventory is large.

Why does Transition metal sulfoxide 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 sulfoxide 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 sulfoxide complex.