Geometrical Isomerism in Cyclobutane

Explanation:

Cyclobutane Structure:
- Cyclobutane is a cyclic hydrocarbon with a four-membered ring.
- Due to its symmetrical structure, cyclobutane does not exhibit geometrical isomerism like cyclohexane.

Geometrical Isomerism:
- Geometrical isomerism occurs when two or more compounds have the same molecular formula and connectivity but differ in the spatial arrangement of atoms.
- This phenomenon is commonly seen in compounds with restricted rotation around a double bond or a cyclic structure.

Cyclohexane vs. Cyclobutane:
- Cyclohexane can exhibit geometrical isomerism in the form of cis and trans isomers due to the presence of a double bond.
- In contrast, cyclobutane does not have the same degree of rotational freedom as cyclohexane, making it unable to form geometrical isomers.

Conclusion:
- In summary, while cyclohexane can show geometrical isomerism, cyclobutane's symmetrical structure restricts its ability to exhibit this type of isomerism.