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Exercise: Structure of organometallic compounds

Exercise

Fig.1

What is the name of this compound?

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

Dimethyl ether.

No, sorry.

Diethyl ether.

Sorry, that is wrong.

Cyclopentanone.

Sorry, that is not correct.

Furan.

No , sorry.

Tetrahydrofuran.

Correct!

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Exercise

How many valence electrons does the magnesium atom of a monomeric Grignard compound that is not complexed by solvent molecules possess?

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

Two.

No, sorry.

Three.

Sorry, that is wrong.

Four.

Correct!

Six.

Sorry, that is not correct.

Eight.

No, sorry.

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Exercise

In an etherial solution, a Grignard compound's magnesium atom may achieve an electron octet through ...

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

... additional complexation by two oxygen molecules.

No, sorry.

... additional complexation by three solvent molecules.

No, sorry.

... additional complexation by two water molecules.

Certainly not! The solution must be free from water otherwise the Grignard compound would be rapidly hydrolyzed!

... additional complexation by two solvent molecules.

Correct!

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Exercise

The mechanism of Grignard compound formation is ...

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

... an anionic mechanism.

No, sorry.

... a cationic mechanism.

Sorry, that is wrong.

... an SN2 mechanism.

No, sorry.

... a radical mechanism.

That is correct!

... an E1cb mechanism.

Sorry, that is not correct.

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Exercise

Hydrolysis of a Grignard compound yields ...

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

... an alkyne.

No, sorry.

... an alkane.

Correct!

... an alkene.

Sorry, that is not correct.

... an alcohol.

No, sorry.

... an aldehyde.

Sorry, that is wrong.

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