Evidence for a trigonal twist mechanism in the intramolecular rearrangement of tris-(N-methyl-N-phenyldithiocarbamato)iron(III)

Abstract

The variable temperature ¹H n.m.r. of the title complex in CD₂Cl₂ solution shows the occurrence of two independent stereochemical processes with approximate coalescence lifetimes of 1·3 × 10^–2 s (–37°) and 9·2 × 10^–4 s (–83°); the lower temperature process is assigned as a non-bond rupture trigonal twist motion about the pseudo-C₃ axis.