1,2,3,4-Tetrahydro-1,4-methanonaphthalenes as model compounds to study the influence of molecular structure on molecular dynamics by 13C NMR relaxation data

Abstract

The alkyl 1,2,3,4-tetrahydro-1,4-methanonaphthalenes (THMNs) are proposed as model compounds for studying the influence of molecular shape on reorientational dynamics in liquids. They possess a rigid molecular frame to which different alkyl chains are attached. The synthesis of several alkyl THMNs is described, and the rotational motions of specific ¹³C–¹H vectors have been evaluated by the measurement of ¹³C relaxation data. The results for the differently-substituted THMNs were compared to each other. The velocity of the reorientational motions could be related to the molecular shape.