New stable germylenes, stannylenes, and related compounds. 5. Germanium(II) and tin(II) azides [N 3-E 14-OCH 2CH 2NMe 2] 2 (E 14 = Ge, Sn): synthesis and structure

Abstract

New stable azido derivatives of divalent germanium and tin [N 3-E 14-OCH 2CH 2NMe 2] 2 (E 14 = Ge ( 1), Sn ( 2)) have been synthesized by use of the β-dimethylaminoethoxy ligand that forms the intramolecular E 14 ← N coordination bond. Their crystal structures have been determined by X-ray diffraction analysis. Compounds 1 and 2 are centrosymmetric dimers via two intermolecular dative E 14 ← O interactions with essentially linear monodentate azide ligands. The dominant canonical form of the E 14-azide moieties is E 14–N–N N.