摘要:
(Nn(iPr)Cr)2(mu(2)-kappa(2):kappa(2)-N-2) (1, Nn(iPr) = bis(2,6-diisopropylphenyl)pentane-2,4-ketiminato), formally a chromium(I) complex, was exposed to a variety of small molecules possessing hetero-or homo-atomic single, double, or triple bonds. Reaction of 1 with adamantyl azide yielded complexes in various higher oxidation states, such as (Nn(iPr)Cr(II))(2)(mu(2)-NAd) (2), Nn(iPr)Cr(III)(kappa(2)-N(4)Ad(2)) (3), or Nn(iPr)Cr(V)(NAd)(2) (4). Compound 1 was found to reductively couple 3-pentanone to form Nn(iPr)Cr(kappa(2)-O2C2Et4) (5) and reductively couple benzylidene aniline to form both Nn(iPr)Cr(III)(cis-kappa(2)-C28H22N2) (6a) an Nn(iPr)Cr(III)(trans-kappa(2)-C28H22N2) (6b). Reaction with a stochiometric amount of benzylidene aniline yielded the imine complex Nn(iPr)Cr(eta(2)-NPhCHPh) (7). Exposure of 1 to a bulky isocyanide formed the octahedral Nn(iPr)Cr(I)[CN(C6H4(Me)(2)](4) (9). Complex 1 was also found to break the O-O, N=O, and S-S bonds in various small molecules to form Nn(iPr)Cr(II)(OCMe3) (11), Nn(iPr)Cr(V)(O)(NPh) (8), and [Nn(iPr)Cr(II)(mu-SPh)](2) (10). (C) 2010 Elsevier B.V. All rights reserved.