Synthesis and Characterization of Novel Titanium, Germanium, and Tin Silazane Complexes Bearing a Cyclohexasilazanetriido Ligand

Abstract

Novel heterometallic silazane complexes were synthesized by the reaction of 1‐lithio‐2,2,4,4,6,6‐hexamethylcyclotrisilazane Li(HMCTS)H2 with the tetrachloride salts of titanium and germanium as well as by the reaction of 1,1,3,3,5,5‐hexamethylcyclotrisilazane H3(HMCTS) with tin tetrachloride and excess triethylamine. The products [H3(DMCHS)TiCl] (1), [H3(DMCHS)GeCl] (2), and [H3(DMCHS)SnCl] (3) {H3(DMCHS) = 2,2,4,4,6,6,8,8,10,10,12,12‐dodecamethylcyclohexasilazane‐1,5,9‐triido} were characterized by 1H‐, 13C‐, 14N‐, and 29Si NMR spectroscopy, elemental analyses and single‐crystal X‐ray structure analyses. The complexes have a surprising and interesting structure, that of a new dodecamethylcyclohexasilazane system with the Ti, Ge, or Sn atom in the center. These metal atoms are coordinated by one chlorine atom and three nitrogen atoms. The metal centers are part of three six‐membered hetero‐silazane rings. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

Anorganische Chemie 2007

“…Zinn‐zentrierten Ringverbindungen [ClM{(SiMe26(NH)3N3}] (M = Ge, Sn) (5). In diesen Verbindungen fungiert ein dreifach deprotonierter Hexasilazan‐Ring als dreizähniger Ligand 7.…”