| Abstract: Two chiral Salen-type transition-metal complexes, named as (N,N′-bis(3-t-butyl-5-methylsalicylidene)-1S,2S-cyclohexanediamine-N,N′,O,O′) nickel(Ⅱ) (1) and (N,N′-bis(3-t-butyl-5-methylsalicylidene)-1S,2S-cyclohexa-nediamine-N,N′,O,O′) copper(Ⅱ) (2), were obtained from the Schiff base condensation between (1S,2S)-cyclohexane-1,2-diamine and 3-tert-butyl-5-methyl-2-hydroxybenzaldehyde. X-ray diffraction crystal structural analyses of 1 and 2 demonstrate that they are isostructural and each central metal ion (M(Ⅱ)) presents square-planar coordination configuration. Both of them are fully characterized by mass spectrometry, FTIR, elemental analysis, UV-Vis spectra and circular dichroism (CD) spectra. A dimeric packing mode via weak offset π-π stacking is observed in the crystal packing structures of 1 and 2. CCDC: 685302, 1; 685303, 2. |
