The effects of σ_C—Se–π hyper­conjugation in 1-meth­oxy- and 1-nitro-4-[(phenyl­selan­yl)meth­yl]benzene

The structures of 1-meth­oxy-4-[(phenyl­selan­yl)meth­yl]benzene and 1-nitro-4-[(phenyl­selan­yl)meth­yl]benzene differ in that the former contains an electron-rich aromatic ring and the latter contains an electron-deficient aromatic ring. Both adopt conformations which allow for σ_C—Se–π hyperconjugation, though the effects of this are not strong enough to be manifested in measurable differences in the structural parameters.