Zinkorganische Phosphaniminato‐Komplexe mit Heterocuban‐Struktur

Organo‐Zinc Phosphaneiminato Complexes with Heterocubane Structure The organo‐zinc heterocubanes [ZnR(NPMe 3 )] 4 with R = CH 3 ( 1 ) and n ‐C 4 H 9 ( 2 ) were prepared by the reaction of [ZnBr(NPMe 3 )] 4 with MeLi and n BuLi, respectively, in hexane solution. In a similar reaction of n BuLi with [ZnI(NPMe 3 ] 4 the phosphaneiminato complex [Zn 4 I( n Bu) 4 (NPMe 3 ) 3 ] ( 3 ) is formed. 1–3 were characterized by IR, NMR and MS spectroscopy, and by crystal‐structure determinations. 1 and 2 possess heterocubane structures in which the zinc atoms are linked via μ 3 ‐N bridges of the phosphaneiminato groups, and all bond angles in the Zn 4 N 4 core are close to 90°. A distorted heterocubane structure is observed for 3 with one of the NPMe 3 moieties replaced by an iodine atom.