Question

What is the measurement of C-O-C bond angle in methoxymethane?

• A. 108$\degree$
• B. 111.7$\degree$
• C. 90$\degree$
• D. 60$\degree$

Answer 1

The Correct Option is B

Determining the C-O-C bond angle in methoxymethane (dimethyl ether) is vital for comprehending its molecular structure. Methoxymethane, an ether, features two methyl groups attached to an oxygen atom via single bonds, creating a C-O-C linkage. The oxygen atom in ethers exhibits sp³ hybridization, generally indicating a tetrahedral arrangement around it.

A perfect tetrahedral geometry possesses a bond angle of 109.5°. Nevertheless, methoxymethane's C-O-C bond angle is somewhat greater. This deviation arises because the repulsion between lone pairs and bond pairs exceeds the repulsion between bond pairs, resulting in a bond angle of approximately 111.7°.

The given choices are:

• 108°
• 111.7°
• 90°
• 60°

Of these options, the accurate C-O-C bond angle for methoxymethane is 111.7°.