344770-69-0

Basic information

• Product Name: (((CH₃)3CC₆H₄)2C₆H₃N)2(CH₃C)2NiBr₂
• CAS NO: 344770-69-0
• Molecular Weight: 983.636
• Mol File: 344770-69-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (((CH₃)3CC₆H₄)2C₆H₃N)2(CH₃C)2NiBr₂(CAS DataBase Reference)
• NIST Chemistry Reference: (((CH₃)3CC₆H₄)2C₆H₃N)2(CH₃C)2NiBr₂(344770-69-0)
• EPA Substance Registry System: (((CH₃)3CC₆H₄)2C₆H₃N)2(CH₃C)2NiBr₂(344770-69-0)

Safety Data

• Hazardous Substances Data: 344770-69-0(Hazardous Substances Data)

Upstream product

• 340187-64-6 N,N'-bis(2,6-bis(4-tert-butylphenyl)phenyl)-1,4-diaza-2,3-dimethyl-butadiene 
• 28923-39-9 nickel(II) bromide dimethoxyethane 

Relevant articles and documents

Novel non-symmetric nickel-diimine complexes for the homopolymerization of ethene: Control of branching by catalyst design

Non-symmetric diimine ligands (Ar-N=C(CH3)-(CH3)C=NAr*; Ar: 2,6-diisopropyl-phenyl; Ar*: 2,6-di(4-tert-butyl-phenyl)phenyl (4b), 2,6-di(4-OCH3)-phenyl)phenyl (4c)) were synthesized and converted in-situ into the corresponding nickel dibromo complexes (5b, c) by reaction with (DME)NiBr2. The complexes were activated for ethene polymerization by treatment with MAO at ambient temperature. The resulting high molecular weight polymer products (Mw > 4.0 × 106 g mol-1) have a branched microstructure (predominantly methyl groups), as indicated by 13C NMR spectroscopy. The degree of branching can be controlled by a proper choice of the 2,6-diphenyl modified aniline moieties resulting in melting transitions ranging from 92 - 130°C.