194485-99-9

Basic information

• Product Name: Zr(O(Si(CH₃)2NC₆H₁₁)2)2
• CAS NO: 194485-99-9
• Molecular Weight: 744.484
• Mol File: 194485-99-9.mol

Chemical Properties

• CAS DataBase Reference: Zr(O(Si(CH₃)2NC₆H₁₁)2)2(CAS DataBase Reference)
• NIST Chemistry Reference: Zr(O(Si(CH₃)2NC₆H₁₁)2)2(194485-99-9)
• EPA Substance Registry System: Zr(O(Si(CH₃)2NC₆H₁₁)2)2(194485-99-9)

Safety Data

• Hazardous Substances Data: 194485-99-9(Hazardous Substances Data)

Upstream product

• 21959-01-3 zirconium tetrachloride bis(tetrahydrofuran) complex 
• 194423-54-6 O(Si(CH₃)2NHC₆H₁₁)2 

Relevant articles and documents

Synthesis and structure of zirconium(IV) alkyl complexes with bi-, tri-, tetra- and penta-dentate amido ligands

The reaction of C6H10(NLiSiMe3)2-1,2 (Li2L1) with [ZrCl4(thf)2] (thf = tetrahydrofuran) afforded the tetraamide [ZrL12] 1. Similarly treatment of (RHNSiMe2)2O (H2L2, R = But; H2L3, R = cyclohexyl) with LiBun followed by [ZrCl4(thf)2] led to [ZrL22]2 and [ZrL32] 3, respectively. Reaction of Zr(CH2Ph)4 with H2L3 gave the pale yellow zirconium dibenzyl compound [Zr(CH2Ph)2L3] 4, while the analogous reaction with H2L4 (R = quinolin-8-yl) led to ruby-red [Zr(CH2Ph)2L4] 5. In addition the bis(pyrrole) [(2-C4H3NH)CH=NCH2]2 (H2L5) reacted with Zr(CH2Ph)4 giving the complex [Zr(CH2Ph)2L5] 6. The crystal structures of 1, 4 and 5 have been determined. Compound 1 has a distorted tetrahedral structure. In 4 and 5 all available donor atoms co-ordinate to zirconium, including the silyl ether moiety, leading to a distorted trigonal bipyramidal structure for 4 and an approximately pentagonal bipyramidal geometry for 5. Although L3 and L4 have flexible frameworks, in both 4 and 5 the heteroatom donors and the metal form an essentially coplanar arrangement. The zirconium-amido nitrogen distances proved to be highly variable, depending on the degree of electron deficiency and the co-ordination of the metal centres, and range from an average of 2.056 A in 1 and 2.096 A in 4 to 2.169 A in 5. Complexes 1 and 4 activated with methylaluminoxane gave high molecular weight polyethylene with moderate activity.