Cas 503067-13-8,[Hf((CH3)3CNCHC4H3N)2(CH2C6H5)](1+)*B(C6F5)3(CH2C6H5)(1-)=[Hf((CH3)3CNCHC4H3N)2(CH2C6H5)](B(C6F5)3(CH2C6H5))

503067-13-8

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Product Name: [Hf((CH₃)3CNCHC₄H₃N)2(CH₂C₆H₅)]⁽¹⁺⁾*B(C₆F₅)3(CH₂C₆H₅)^(1-)=[Hf((CH₃)3CNCHC₄H₃N)2(CH₂C₆H₅)](B(C₆F₅)3(CH₂C₆H₅))
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CAS NO:503067-13-8
Molecular Formula:
Molecular Weight: 1171.17
EINECS: N/A
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Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
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Density: N/A
Refractive Index: N/A
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Solubility: N/A
CAS DataBase Reference: [Hf((CH₃)3CNCHC₄H₃N)2(CH₂C₆H₅)]⁽¹⁺⁾*B(C₆F₅)3(CH₂C₆H₅)^(1-)=[Hf((CH₃)3CNCHC₄H₃N)2(CH₂C₆H₅)](B(C₆F₅)3(CH₂C₆H₅))(CAS DataBase Reference)
NIST Chemistry Reference: [Hf((CH₃)3CNCHC₄H₃N)2(CH₂C₆H₅)]⁽¹⁺⁾*B(C₆F₅)3(CH₂C₆H₅)^(1-)=[Hf((CH₃)3CNCHC₄H₃N)2(CH₂C₆H₅)](B(C₆F₅)3(CH₂C₆H₅))(503067-13-8)
EPA Substance Registry System: [Hf((CH₃)3CNCHC₄H₃N)2(CH₂C₆H₅)]⁽¹⁺⁾*B(C₆F₅)3(CH₂C₆H₅)^(1-)=[Hf((CH₃)3CNCHC₄H₃N)2(CH₂C₆H₅)](B(C₆F₅)3(CH₂C₆H₅))(503067-13-8)

Safety Data

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RTECS:
HazardClass: N/A
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Hazardous Substances Data: 503067-13-8(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 503067-13-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,0,6 and 7 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 503067-13:
(8*5)+(7*0)+(6*3)+(5*0)+(4*6)+(3*7)+(2*1)+(1*3)=108
108 % 10 = 8
So 503067-13-8 is a valid CAS Registry Number.

503067-13-8Upstream product

1109-15-5 tris(pentafluorophenyl)borate

503067-13-8Downstream Products

503067-13-8Relevant academic research and scientific papers

Efficient ethylene polymerisation catalysis by a cationic benzyl hafnium complex containing pyrrolide-imine ligands

Matsui, Shigekazu,Spaniol, Thomas P.,Takagi, Yukihiro,Yoshida, Yasunori,Okuda, Jun

, p. 4529 - 4531 (2002)

A study was performed on efficient ethylene polymerization catalysis. A dibenzyl hafnium(IV) complex containing pyrrolide-imine ligands was synthesized and investigated as an ethylene polymerization catalyst. It was found that the complex can be converted into the benzyl cation, which showed high ethylene polymerization activity.

Pyrrolide-imine benzyl complexes of zirconium and hafnium: Synthesis, structures, and efficient ethylene polymerization catalysis

Matsui, Shigekazu,Yoshida, Yasunori,Takagi, Yukihiro,Spaniol, Thomas P.,Okuda, Jun

, p. 1155 - 1164 (2007/10/03)

A series of pyrrolyl-imines HL1-6 was prepared by the condensation of pyrrole-2-carboxyaldehyde with different amines. The reaction of 2 equiv of pyrrolyl-imine with tetrabenzyl complexes of hafnium and zirconium M(CH2Ph)4 (M=Hf or Zr) gave dibenzyl complexes (L3-6)2M(CH2Ph) 2, which were characterized by NMR spectroscopy and crystal structure analysis. NMR spectra of the complexes with secondary alkyl substituents at the imine nitrogen (isopropyl: 3a, 4- tert -butylcyclohexyl: 4a and 4b) suggest that rapid racemization between Δ and Λ configurations occurs in solution on the NMR time scale. The complexes with pyrrolide-imine ligands with a tertiary alkyl group such as tert -butyl (5a and 5b) or 1-adamantyl (6a and 6b) at the imine nitrogen possess cis -configured benzyl groups. Hafnium complexes 5a and 6a react with B(C6F5)3 in bromobenzene-d5 to give the corresponding cationic benzyl complexes, which exhibit high activity for ethylene polymerization (5a: 2242 kg-polymer/ mol-Hf h bar, 6a: 2096 kg-polymer/ mol-Hf h bar). Zirconium complexes 5b and 6b display a remarkably high ethylene polymerization activity when activated with methylaluminoxane (5b: 17,952 kg-polymer/mol-Zr h bar, 6b: 22,944 kg-polymer/mol-Zr h bar).

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