This information is crucial to understand the transformation that takes place during the reaction.
Given the details you've provided:
1. Diol Formation (65% Yield): The reaction with water indicates a hydration process, leading to the formation of a cis-diol. This suggests that the starting material likely contains a double bond or a similar functional group that can react with water to form two hydroxyl groups (–OH) on adjacent carbon atoms in a cis configuration.
2. New Compound (C9H16O, 35% Yield): The molecular formula C9H16O suggests a reduction in oxygen content compared to a diol. This could be indicative of a rearrangement or elimination reaction occurring alongside hydration, resulting in the formation of a compound with one oxygen atom (possibly an alcohol, ether, or ketone).
This will help in understanding the reaction mechanism and in deducing the structures of the products.