Stereochemistry of hexakis (3-methoxyphenyl) benzene and hexakis(3-methylphenyl) benzene. An incremental chemical shift model formeta-substituted hexaphenylbenzenes
The 1H NMR spectrum of hexakis(3‐methoxyphenyl)benzene exhibits a methoxy absorption which looks exactly like a triplet. The spacing between the signals is, however, proportional to rather than independent of the field strength. The aryl H‐5 region of this compound and the methyl region of hexakis(3‐methylphenyl)benzene display similar field‐proportional, triplet‐like splittings. This property of meta‐substituted