A dithallium-derivative of an amino-tripod by demetallation of the trithallium triamide in dioxane

The tris(aminosilyl)silane MeSi(SiMe2NH(4-CH3C6H4)}(3) (2) was characterize d by X-ray diffraction and found to adopt a "paddle weel" type arrangement. Upon controlled thermolysis of the thallium(I)amide derived from MeSi{SiMe (2)NHtBu}(3) the dimetallated diamido-amine [MeSi{SiMe2N(Tl)tBu}(2)(SiMe(2) NHtBu}] (3) was obtained and structurally characterized by X-ray diffractio n. The two remaining thallium atoms and the amido-N atoms form a four-membe red ring while the remaining NH-amino function coordinates weakly to one of the thallium atoms. (C) 2001 Elsevier Science B.V. All rights reserved.