49673-40-7

Basic information

• Product Name: N,N'-(1,2-Dimethylethanediylidene)bis(2,6-dimethylaniline)
• Synonyms: N,N'-(1,2-Dimethyl-1,2-ethanediylidene)bis(2,6-dimethylbenzenamine);N,N'-(1,2-Dimethylethane-1,2-diylidene)bis(2,6-dimethylaniline);N,N'-(1,2-Dimethylethanediylidene)bis(2,6-dimethylaniline);N,N'-(2,3-Butanediylidene)bis(2,6-dimethylaniline);N,N'-Bis(2,6-dimethylphenyl)-2,3-butanediimine;N,N'-Bis(2,6-dimethylphenyl)butane-2,3-diimine
• CAS NO: 49673-40-7
• Molecular Formula: C₂₀H₂₄N₂
• Molecular Weight: 292.42
• Mol File: 49673-40-7.mol
• Article Data: 10

Chemical Properties

• Appearance: /
• CAS DataBase Reference: N,N'-(1,2-Dimethylethanediylidene)bis(2,6-dimethylaniline)(CAS DataBase Reference)
• NIST Chemistry Reference: N,N'-(1,2-Dimethylethanediylidene)bis(2,6-dimethylaniline)(49673-40-7)
• EPA Substance Registry System: N,N'-(1,2-Dimethylethanediylidene)bis(2,6-dimethylaniline)(49673-40-7)

Safety Data

• Hazardous Substances Data: 49673-40-7(Hazardous Substances Data)

Upstream product

• 431-03-8 dimethylglyoxal 
• 87-62-7 2,6-dimethylaniline 

Downstream Products

• 72991-84-5 meso-2,3-bis(2',6'-dimethylphenyl-amino)-butane 
• 72991-84-5 racemisch-2,3-Bis-(2',6'-dimethylphenylamino)-butan 
• 74779-91-2 Ni(1,4-bis(2,6-dimethylphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene)₂ 
• 102133-08-4 (C₆H₆)Ru(C₆H₃(CH₃)2NC(CH₃)C(CH₃)NC₆H₃(CH₃)2)Cl⁽¹⁺⁾*BF₄^(1-)={(C₆H₆)Ru(C₂₀H₂₄N₂)Cl}BF₄ 
• 156882-18-7 diacetylbis(2,6-dimethylphenylimine)-N-phenylsulfinylaminenickel⁽⁰⁾ 
• 101958-04-7 carbonylchlorodiacetylbis(2,6-dimethylphenylimine)rhodium(I) 
• 101211-28-3 [C₆H₃(CH₃)2]NC(CH₃)C(CH₃)N[C₆H₃(CH₃)2]Co[C₅(CH₃)5] 
• 312925-38-5 [2,6-Me₂C₆H₃N=C(Me)C(Me)=N-2,6-Me₂C₆H₃]Pt(Me)(Ph) 
• 312925-30-7 Ph₂Pt((2,6-Me₂C₆H₃)-N=C(Me)-C(Me)=N-(2,6-Me₂C₆H₃)) 
• 566173-31-7 [2,6-(CH₃)2C₆H₃NC(CH₃)C(CH₃)N₂,6-(CH₃)2C₆H₃] platinum(II)dichloride 
• 75170-95-5 [Ni(CH₃)2(((CH₃)2C₆H₃NC(CH₃))2)] 
• 202146-40-5 (N,N'-bis(2,6-dimethylphenyl)ethylenediimine)(eta.⁽⁶⁾-toluene)Fe 

Relevant articles and documents

α-Diamine Nickel Catalysts with Nonplanar Chelate Rings for Ethylene Polymerization

A series of novel α-diamine nickel complexes, (ArNH-C(Me)-(Me)C-NHAr)NiBr2, 1: Ar=2,6-diisopropylphenyl, 2: Ar=2,6-dimethylphenyl, 3: Ar=phenyl), have been synthesized and characterized. X-ray crystallographic analysis showed that the coordination geometry of the α-diamine nickel complexes is markedly different from conventional α-diimine nickel complexes, and that the chelate ring (N-C-C-N-Ni) of the α-diamine nickel complex is significantly distorted. The α-diamine nickel catalysts also display different steric effects on ethylene polymerization in comparison to the α-diimine nickel catalyst. Increasing the steric hindrance of the α-diamine ligand by substitution of the o-methyl groups with o-isopropyl groups leads to decreased polymerization activity and molecular weight; however, catalyst thermal stability is significantly enhanced. Living polymerizations of ethylene can be successfully achieved using 1/Et2AlCl at 35 °C or 2/Et2AlCl at 0 °C. The bulky α-diamine nickel catalyst 1 with isopropyl substituents can additionally be used to control the branching topology of the obtained polyethylene at the same level of branching density by tuning the reaction temperature and ethylene pressure.

A di-nickel complex and its preparation method and application

The invention belongs to the field of alkene catalytic polymerization, and concretely discloses a diamine nickel complex, and a preparation method and application thereof. The complex possesses a structure shown as a formula I or II, R1 is hydrogen or alkyl, R2 is hydrogen, alkyl or phenyl, R3 is hydrogen, alkyl or phenyl, R4 is hydrogen, alkyl or phenyl, R5 is hydrogen, alkyl or phenyl, and X is a halogen. The diamine nickel complex is diverse in structure and easy to prepare. When the diamine nickel complex catalyzes ethane for active polymerization, the branching degree of the obtained polymer can be changed between medium branching degree and high branching degree by adjusting the ligand structure and changing the polymerization conditions. By using the catalyst with one specific structure, the polymer with high branching degree can be obtained at different temperatures, and the branching degree is not obviously changed along with temperature.

Mechanistic Insight into High-Spin Iron(I)-Catalyzed Butadiene Dimerization

Iron complexes are commonly used in catalysis, but the identity of the active catalyst is often unknown, which prevents a detailed understanding of structure-reactivity relationships for catalyst design. Here we report the isolation and electronic structure determination of a well-defined, low-valent iron complex that is an active catalyst in the synthesis of cis,cis-1,5-cyclooctadiene (COD) from 1,3-butadiene. Spectroscopic and magnetic characterization establishes a high-spin Fe(I) center, which is supported by DFT studies, where partial metal-ligand antibonding orbital population is proposed to allow for facile ligand exchange during catalysis.