Synthesis, Structure, and Reactivity of Co(II) and Ni(II) PCP Pincer Borohydride Complexes.

ABSTRACT: The 15e square-planar complexes [Co(PCP^Me-iPr)Cl] (2a) and [Co(PCP-tBu)Cl] (2b), respectively, react readily with NaBH₄ to afford complexes [Co(PCP^Me-iPr)(η²-BH₄)] (4a) and [Co(PCP-tBu)(η²-BH₄)] (4b) in high yields, as confirmed by IR spectroscopy, X-ray crystallography, and elemental analysis. The borohydride ligand is symmetrically bound to the cobalt center in η²-fashion. These compounds are paramagnetic with effective magnetic moments of 2.0(1) and 2.1(1) μ_B consistent with a d⁷ low-spin system corresponding to one unpaired electron. None of these complexes reacted with CO₂ to give formate complexes. For structu

SUBMITTER: Murugesan S 

PROVIDER: S-EPMC5021384 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature