Chemical Non‐Innocence of an Aliphatic PNP Pincer Ligand. Issue 1 (23rd November 2016)

• Record Type: Journal Article
• Authors: Schneck, Felix; Finger, Markus; Tromp, Moniek; Schneider, Sven
• Is Part Of: Chemistry. Volume 23:Issue 1(2017)
• Page Start: 33
• Page End: 37
• Publication Date: 2016-11-23
• Subjects: C−H activation -- hydrogen atom transfer -- nickel -- non-innocent ligands -- pincer ligands; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201604407
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: The synthesis of the divinylamido PNP nickel(II) complex [NiBr{N(CHCHP t Bu2 )2 }] is reported. This compound exhibits reversible, ligand‐centered oxidation and protonation reactions. The resulting pincer chemical non‐innocence can be utilized for benzylic C−H hydrogen atom abstraction. The thermochemistry and kinetics of hydrogen atom transfer were examined. Abstract : Proven guilty : The divinylamido PNP nickel(II) platform [NiBr{N(CHCHP‐ t Bu2 )2 }] 0/+ undergoes reversible, ligand‐centered redox protonation and hydrogen atom transfer (HAT) reactions. The pincer chemical non‐innocence can be utilized for benzylic C−H hydrogen atom abstraction. The HAT thermochemistry and kinetics were examined (see scheme).