Homoleptic low-valent polyazides of group 14 elements

Chem Commun (Camb). 2015 May 1;51(35):7435-8. doi: 10.1039/c5cc00259a.

Abstract

First examples of coordinatively unsaturated, homoleptic azido complexes of low-valent group 14 elements are reported. A simple strategy uses low-valent precursors, ionic azide transfer reagents and bulky cations to obtain salt-like compounds containing E(N3)3(-) of Ge(II)/Sn(II) which are fully characterised, including XRD. Remarkably, these compounds are kinetically stable at r.t. and isolable in sub-gram quantities.