O2-dependent aliphatic carbon-carbon bond cleavage reactivity in a Ni(II) enolate complex having a hydrogen bond donor microenvironment; comparison with a hydrophobic analogue.

ABSTRACT: A mononuclear Ni(II) complex having an acireductone type ligand, and supported by the bnpapa (N,N-bis((6-neopentylamino-2-pyridyl)methyl)-N-((2-pyridyl)methyl)amine) ligand, [(bnpapa)Ni(PhC(O)C(OH)C(O)Ph)]ClO(4) (14), has been prepared and characterized by elemental analysis, (1)H NMR, FTIR, and UV-vis. To gain insight into the (1)H NMR features of 14, the air stable analogue complexes [(bnpapa)Ni(CH(3)C(O)CHC(O)CH(3))]ClO(4) (16) and [(bnpapa)Ni(ONHC(O)CH(3))]ClO(4) (17) were prepared and characterized by X-ray crystallography, (1)H NMR, FTIR, UV-vis, mass spectrometry, and solution conductivity measurements. Compounds 16 and 17 are 1:1 electrolyte species in CH(3)CN. (1)H and (2)H NMR studies of 14, 16, and 17 and deuterated analogues revealed that the complexes having six-membered chela

SUBMITTER: Grubel K 

PROVIDER: S-EPMC2866139 | biostudies-literature | 2010 Feb

REPOSITORIES: biostudies-literature