p‐Decyl­phenyl isocyanide and p‐decyl­benzo­nitrile: isomorphous iso­nitrile/nitrile isomers

p‐Decyl­phenyl isocyanide, p‐C₁₀H₂₁–C₆H₄–NC or C₁₇H₂₅N, and p‐decyl­benzo­nitrile, p‐C₁₀H₂₁–C₆H₄–CN or C₁₇H₂₅N, are isomorphous. The mol­ecules lie in mirror planes, with the C₆ rings perpendicular to the mirror. The packing of both mol­ecules includes an aliphatic region, with close to ideal packing of the C₁₀H₂₁ chains, and an aromatic region, with phenyl ring–CN interactions. In addition, the CN ends of the mol­ecules are also involved in a CN?NC dipolar interaction.