Multiple bonding between germanium and the chalcogens: the syntheses and structures of the terminal chalogenido complexes (η4-Me8taa)GeE (E = S, Se, Te)

Abstract

A series of terminal chalcogenido complexes of germanium supported by ligation of the macrocyclic octamethyldibenzotetraaza[14]annulene dianion (η⁴-Me₈taa)GeE (E = S, Se, Te) has been prepared by addition of the chalcogen to (η⁴-Me₈taa)Ge; structural studies on these complexes indicate that the bonding of the Ge≈E moiety is best described as intermediate between the Ge–Ē and GeE resonance structures.