zum Directory-modus

Exercises: The structure of carbon-centered radicals

Instruction

Bitte Flash aktivieren.

Fig.1

Exercise

Which of the following three-dimensional arrangements of a carbon-centered radical can be definitely excluded?

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

Rigid pyramidal.

Flexible pyramidal.

Planar.

ResetEvaluateShow solution
Exercise

Radical reactions with bicyclic compounds have a good possibility of getting information about the three-dimensional structure of radicals if the radical is generated at one of the bridgehead atoms. Which of the following statements are correct?

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

The bridgehead radical carbon and its substituents can consume a planar structure, because the ring strain of the bicycle is very low.

Because of the high rigidity of the bicycle, these radicals cannot have a planar structure with a sp2 hybridized radical carbon atom. Such radicals are just formed particularly slowly.

Because of the low stability of the bicycle, these radicals cannot consume a planar structure with a sp2 hybridized radical carbon atom. Such radicals are formed very slowly.

Because of the high flexibility of the bicycle, these radicals can consume a planar structure with a sp2 hybridized radical carbon atom. Such radicals are, therefore, formed very rapidly.

ResetEvaluateShow solution