The synthesis of two N-arylsubstituted 2-silaimidazolidenes 9a, b by metal-reduction of the appropriate silicon(IV) heterocycles is reported. Structural as well as spectroscopic data obtained for the N-arylsubstituted N-heterocyclic silylenes (NHSi) are very close to those obtained previously for their N-alkylsubstituted counterparts. NHSis 9a, b are used as starting materials for the synthesis