Final answer:
The question seems to be mixing up the concepts of an alkane (isohexane) and an aromatic hydrocarbon; monochlorination of isohexane would result in various chlorinated alkanes, not aromatic compounds.
Step-by-step explanation:
The student has asked to provide the structure of isohexane resulting from monochlorination at room temperature. However, the student appears to be confusing two different concepts. Isohexane refers to an isomer of hexane, which is an alkane, not an aromatic hydrocarbon. Monochlorination of isohexane would result in a mixture of chlorinated alkanes, not a specific aromatic compound.
To approach this correctly, let's focus on chlorination of hexane. The hexane can be chlorinated through a radical substitution reaction, with the chlorine replacing a hydrogen atom on one of the carbon atoms. However, the question possibly intends to discuss the chlorination of an aromatic compound such as toluene, where a chlorine atom replaces a hydrogen atom on the aromatic ring to give chlorinated toluene isomers such as ortho-chlorotoluene, meta-chlorotoluene, and para-chlorotoluene. Without more specific information, we cannot provide a single structure for the chlorination product of isohexane.