Abstract
A new cadmium(II) complex [Cd(NO2-Salen)2] containing Schiff base ligand (NO2-Salen = N-mono-5-nitro-salicylideneamino ethanato) has been prepared through facile condensation reaction of sub-stituted salicylaldehyde with ethylene-diamine and has been structurally characterized by elemental analysis, IR spectra and X-ray diffraction. It is formulated as C18H20CdN6O6 crystallizes in the orthorhombic system, space group of Pccn. The ligand of 5-nitrosalicylaldehyde-ethylene-diamine exhibits unusual mono asymmetry tridentate mode. The Cd2+ ion has a coordination number of six and assumes a distorted octahedral geometry. It exhibits an offset π-π stacking interaction between the substituted benzene ligands of adjacent mononuclear complexes. The neutral monomeric units of [Cd(NO2-Salen)2] are linked into a one-dimensional (1D) array via the intermolecular hydrogen bonds and π-π stacking interactions. The complex exhibits strong emission in visible region with the maximum wavelength of 428 nm, which is tentatively assigned to the π → π* intraligand fluorescence.
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Feng, X., Zhang, T., Chen, J.L. et al. One-pot synthesis, crystal structure, and fluorescence property of a cadmium(II) complex based on mono salicylaldehyde Schiff base ligand. Russ J Coord Chem 40, 510–514 (2014). https://doi.org/10.1134/S1070328414070033
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DOI: https://doi.org/10.1134/S1070328414070033