The Straight Chain- and the Many Membered CH₂ Ring-Molecule

Abstract

THE heats of combustion of a CH₂ group are the same in a normal and in the cyclo molecule, except the first members of the two series. Almost the same holds for the refractivities if the very small differences in the cyclo series are disregarded. From these two facts it must be concluded that the carbon-carbon and the carbon-hydrogen distances are the same in both series, and that the whole electronic configuration of an individual CH₂ group is nearly identical in both structures.