Final answer:
Compound 1, with six carbons and alternating double bonds in a hexagonal pattern, is derived from an aromatic hydrocarbon, specifically benzene, which has a unique stability due to resonance.
Step-by-step explanation:
Compound 1, which contains six carbons with one hydrogen atom as one of the substituents at the C-1 position, is indicative of a particular type of hydrocarbon structure. Given the description that the six carbons are arranged in a hexagonal pattern with a double bond alternated between every other carbon, Compound 1 is likely derived from an aromatic hydrocarbon. This arrangement of atoms and bonds aligns with the structure of benzene, a well-known aromatic compound characterized by its hexagonal ring and alternating double bonds, which is also sp² hybridized.
In this context, the term C-1 substituent refers to the group attached to the first carbon in the ring, which in benzene's case is a single hydrogen. The unique bonding arrangement confers a high degree of stability and a distinct set of chemical properties relative to non-aromatic compounds. When discussing the properties of such a compound, it's important to note that the alternating double bonds allow for resonance, which is a key feature of aromatic hydrocarbons and contributes to their chemical stability.