Synthesis and structural studies of diamagnetic first-row transition metal complexes with the rigid nitrogen ligand: bis[N-(2,6-diisopropylphenyl)imino]acenaphthene

Reported are the syntheses and characterization of diamagnetic copper(I) and iron(II) complexes with the bidentate nitrogen ligand bis[N-(2,6-diisopropylphenyl)imino]acenaphthene (o,o′-iPr2C6H3-BIAN). Namely, they are [Cu(o,o′-iPr2C6H3-BIAN)2](ClO4)(AcOH) (1), and [Fe(bipy)2(o,o′-iPr2C6H3-BIAN)](ClO4)2 (2), where bipy=2,2′-bipyridine, AcOH=acetic acid. Moreover, the crystal structure of the novel dimeric Cu(I) compound with the p-brominated derivative of the o,o′-iPr2C6H3-BIAN ligand, is also discussed. In [CuBr(o,o′-iPr2-p-BrC6H2-BIAN)]2 (3), the respective Cu(I) ion is in four-coordinate environment tetrahedrally surrounded by two imine nitrogen atoms of o,o′-iPr2-p-BrC6H2-BIAN, and by two bridging bromide atoms.