European Journal of Inorganic Chemistry
European Journal of Inorganic Chemistry
5 years ago

Synthesis and Characterization of a Series of Nickel Complexes with Tripodal and Related Ligands: Electroreductive Coupling of Alkynes and Carbon Dioxide

Synthesis and Characterization of a Series of Nickel Complexes with Tripodal and Related Ligands: Electroreductive Coupling of Alkynes and Carbon Dioxide
Olaf Walter, Thomas A. Zevaco, Siegfried Schindler, Michael Leibold, Konstantina I. Alexopoulou
Nickel(II) complexes of a series of tripodal ligands (and derivatives), for example, [Ni(Me6tren)(DMF)](ClO4)2 [Me6tren = tris(2-dimethylaminoethyl)-amine], are prepared and structurally characterized. The complexes are tested for their potential to be used as mediators for electroreductive coupling of butadiene and carbon dioxide. From the whole series, the complex [Ni(Me5dien)(DMF)3](ClO4)2 (Me5dien = 1,1,4,7,7-pentamethyl-diethylenetriamine) yields the highest amount of 3 hexene-1,6 diacid (HDS), thus leading to the same result as the best nickel complex (with the ligand 2,4,4-trimethyl-1,5,9-triazacyclodecan, N3) so far reported in the literature. A series of NiII complexes is investigated for their potential to be used as mediators in electroreductive coupling of CO2 with butadiene. The complex [Ni(Me5dien)(DMF)3](ClO4)2 (Me5dien = 1,1,4,7,7-pentamethyl-diethylenetriamine) yields the highest amount of 3 hexene-1,6 diacid (HDS).

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ejic.201700854

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