Abstract
The reaction of Cr(CO)6 with 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene (1, dppbian) affords a chromium complex with the neutral diimine ligand (dpp-bian)Cr(CO)4 (2). The exchange reactions of the compound [(dpp-bian)Cr(μ-Cl)(THF)]2 (3) with LiOH, PhC≡CNa, [(CH3)3Si]2NK, C5H5Na, and C5Me5Na give the corresponding radical-anion derivatives, viz., [(dpp-bian)Cr(μ-OH)]2 (4), [(dpp-bian)Cr(μ-C≡CPh)]2 (5), (dpp-bian)Cr[N(SiMe3)2]-(THF) (6), (dpp-bian)Cr(C5H5) (7), and (dpp-bian)Cr(C5Me5) (8). The titanium and zirconium complexes with the acenaphthene-1,2-diimine dianion, viz., (dpp-bian)2Ti (9) and (dpp-bian)Zr(Cl)Cp (10), were synthesized by the reactions of Na2(dpp-bian) with TiCl4 and CpZrCl3, respectively. All compounds were characterized by IR spectroscopy and elemental analysis. Diamagnetic derivatives 2, 9, and 10 were additionally studied by 1H NMR spectroscopy. The structures of products 2, 4–8, and 10 were determined by X-ray diffraction.
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