2-Telluroimidazolines 6 are obtained as stable solids from the imidazo
l-2-ylidenes 4 and tellurium in good yields. The X-ray structure of 6c
reveals the relevance of the mesomeric structure 5 [d(Cl-, Te) = 2.08
7(4) angstrom] which is confirmed by the up-field shift in the Te-125
NMR spectra (delta < - 150).