Fine Structures of 8-G-1-(𝑝-YC_𝟔H_𝟒C≡CSe)C_𝟏𝟎H_𝟔 (G = H, Cl, and Br) in Crystals and Solutions: Ethynyl Influence and Y- and G-Dependences

Scheme 3

Plausible structures of 1–3: A and B notation for naphthyl group, pd and pl for phenyl group, and the combined one for 1–3.