Methyl isocynate, CH₃NCO, can be represented as a hybrid of three Lewis structures. The most satisfactory structure is the one given above in Example 10-12. Draw the other two structures. On the basis of formal charges, which of the structures is least satisfactory?

Example 10-12

Methyl isocyanate, CH₃NCO, is used in the manufacture of insecticides, such as carbaryl (Sevin). In the CH₃NCO molecule, the three H atoms and the O atom are terminal atoms and the two C and one N atom are central atoms. Draw the structure of this molecule, using dash and wedge symbols, and indicate the various bond angles.