162898-60-4

Upstream product

• 10026-11-6 zirconium(IV) chloride 
• 173863-09-7 [ZrCl₂(Li(C₄H₁₀O)2)(CH₃Si(Si(CH₃)2NC₆H₄CH₃)3)] 
• 109-72-8 n-butyllithium 
• 60-29-7 diethyl ether 

Downstream Products

• 175915-53-4 [MeSi(SiMe₂N(4-CH₃C₆H₄))3]Zr-Ru(CO)2(Cp) 
• 349654-77-9 CH₃Si(Si(CH₃)2N(CH₃C₆H₄))3ZrSn(C₆H₅)3 
• 173863-19-9 [Zr(C₅H₅)(CH₃Si(Si(CH₃)2NC₆H₄CH₃)3)] 

Relevant academic research and scientific papers

Tripodal amido-titanium and -zirconium complexes containing a trisilylsilane-derived ligand framework

A series of amido-titanium and -zirconium complexes containing a tripodal amide with a trisilylsilane ligand framework has been prepared. The primary isolable products in the reaction of SiMe (SiMe2NHR)3 (R = 4-MeC6H4, 2-FC6H4 or 4-MeOC6H4) with LiBun and ZrCl4 in diethyl ether are the [Li(OEt2)2Cl] adducts of which the five-co-ordinate complex [{(4-MeOC6H4NSiMe2) 3MeSi}Zr(μ-Cl)2Li(OEt2)2] and the six-co-ordinate [{(2-FC6H4NSiMe2) 3MeSi}Zr(μ-Cl)2Li(OEt2)2] have been characterised by X-ray crystallography. In the latter one of the fluorine atoms of the peripheral 2-FC6H4 groups is weakly co-ordinated to the metal. Stirring of the (Et2O)2LiCl adducts in toluene generates the four-co-ordinate complexes [Zr{SiMe(SiMe2NR)3}Cl]. Upon reaction of [M{SiMe[SiMe2N(C6H4F-2)]3}Cl] (M = Ti or Zr) with AgO3SCF3 the corresponding triflates were obtained which are sufficiently stable to be isolated. The halide ligand may be readily substituted to give the corresponding methyl, ethynyl and cyclopentadienyl complexes.

Tripodal Amides Containing a Totally Silicon-Based Ligand Framework

A novel type of tripodal amido ligand with a totally silicon-based (trisilylsilane-derived framework has been synthesized and coordinated to tetravalent titanium and zirconium.The key compound in the ligand synthesis is the chlorosilane H3CSi3 (2) which upon condensation with a range of primary amines R-NH2 (R = aryl, alkyl) yields the amino-functionalized ligand precursors H3CSi3 (3a-e).Their corresponding trilithium salts have been found to be the appropriate amide transfer reagents in the subsequent syntheses of the transition metal complexes.Single-crystal X-ray structure analyses of the trilithium triamide H3CSi3 (4a) and the Ti complex H3CSi3TiBr (5b) have established their respective adamantane- and bicyclooctane-related cage structures. - Key Words: Trisilylsilanes/ Tripodal ligands/ Amido complexes