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There are a total of 5 structural isomers of C6H14 that belong to the alkane and cycloalkane families. Here are the names and structures of each isomer:1. n-Hexane straight-chain alkane Structure: CH3-CH2-CH2-CH2-CH2-CH32. 2-Methylpentane branched-chain alkane Structure: CH3-CH CH3 -CH2-CH2-CH33. 3-Methylpentane branched-chain alkane Structure: CH3-CH2-CH CH3 -CH2-CH34. 2,2-Dimethylbutane branched-chain alkane Structure: CH3-C CH3 2-CH2-CH35. Cyclohexane cycloalkane Structure: A six-membered ring with each carbon atom bonded to two hydrogen atoms.Note that the structures are represented in a condensed format, and you would need to draw them out to visualize their shapes.