Cas 623938-45-4,[2-((1-ethylpropylidene)amino)benzoato-κ(2)N,O](η1-benzyl)(trimethylphosphine)nickel(II)

623938-45-4

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Product Name: [2-((1-ethylpropylidene)amino)benzoato-κ(2)N,O](η1-benzyl)(trimethylphosphine)nickel(II)
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CAS NO:623938-45-4
Molecular Formula:
Molecular Weight: 430.149
EINECS: N/A
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Chemical Properties

Melting Point: N/A
Boiling Point: N/A
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Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: [2-((1-ethylpropylidene)amino)benzoato-κ(2)N,O](η1-benzyl)(trimethylphosphine)nickel(II)(CAS DataBase Reference)
NIST Chemistry Reference: [2-((1-ethylpropylidene)amino)benzoato-κ(2)N,O](η1-benzyl)(trimethylphosphine)nickel(II)(623938-45-4)
EPA Substance Registry System: [2-((1-ethylpropylidene)amino)benzoato-κ(2)N,O](η1-benzyl)(trimethylphosphine)nickel(II)(623938-45-4)

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Hazardous Substances Data: 623938-45-4(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 623938-45-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,2,3,9,3 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 623938-45:
(8*6)+(7*2)+(6*3)+(5*9)+(4*3)+(3*8)+(2*4)+(1*5)=174
174 % 10 = 4
So 623938-45-4 is a valid CAS Registry Number.

623938-45-4Upstream product

623938-45-4Downstream Products

220169-11-9 (Me₃P)B(C₆F₅)3

623938-45-4Relevant academic research and scientific papers

[2-(Alkylideneamino)benzoato]nickel(II) complexes: Active catalysts for ethylene polymerization

Shim, Chang Bo,Kim, Young Heui,Lee, Bun Yeoul,Dong, Yongkwan,Yun, Hoseop

, p. 4272 - 4280 (2003)

The complexes [RR′C=NC6H4C(O)O-κ2N,O] Ni(η3-CH2CMeCH2) (R, R′ = -(CH2)5-, 6; R = Et, R′ = Et, 7; R = tBu, R′ = H, 8) are prepared by reaction of the corresponding potassium salts with [(η3-CH2CMeCH2)NiCl]2 in CH3CN. Additions of 1 equiv of B(C6F5)3 afford the zwitterionic complexes [RR′C=NC6H4C{OB(C6 F5)3}O-κ2N,O]Ni (η3-CH2CMeCH2) (R, R′ = -(CH2)5-, 9; R = Et, R′ = Et, 10; R = tBu, R′ = H, 11), which give poly(ethylene) when ethylene gas is added. This result is interesting in that the corresponding 2-(diphenylphosphino)benzoato and 2-(diphenylamino)benzoato complexes give mainly butene. Reactions of the potassium salts with Ni(η3-CH2C6H5) Cl(PMe3) afford benzyl complexes, [RR′C=NC6H4C-(O)O-κ2N,O] Ni(η1-CH2C6H5)(PMe3) (R,R′ = -(CH2)5-, 12; R = Et, R′ = Et, 13). Additions of 2 equiv of B(C6F5)3 to 12 and 13 afford the zwitterionic η3-benzyl complexes [RR′C=NC6H4C-{OB(C6 F5)3}O-κ2N,O]Ni (η3-CH2C6H5) (R, R′ = -(CH2)5-, 14; R = Et, R′ = Et, 15). Complex 14 is rather unstable, and a bis ligand complex, [(CH2)5C=NC6H4C{OB(C6 F5)3}O-κ2N,O]2Ni (16), is formed during recrystallization. Complexes 14 and 15 are highly active to ethylene polymerization, and activities reach 3000-4000 kg/((mol of Ni) h) at 75 psig pressure. Solid structures of 6, 9, 11, 15, and 16 were determined by X-ray crystallography.

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