Abstract
The coordination and organometallic chemistry of a series of diazene (N2)-bridged Ni(II) catalysts derived from pyrazole-scaffold-based ligands bearing alkyl and aryl pendent arms was investigated. Binucleating ligands were obtained as products of the condensation reaction between 3,5-dichloroformyl-1H-pyrazole and aliphatic/ aromatic primary/secondary amines under anhydrous con- ditions. The Ni(II) catalysts were activated with ethyl aluminum sesquichloride (EASC) to oligomerize the eth- ylene mainly into C4, C6, C8, and C10 fractions with activities up to 1.2 and 0.5 9 10 6 g (mol-Ni) -1 bar -1 h -1 at 30 and 50 C, respectively. All catalysts were found to be electrochemically active in the working potential range of - 2t o?2 V. A change in the potential of Ni(II) was provoked by the N4 donor bridging ligands, increasing the ethylene oligomerization activity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
