One-pot synthesis,crystal structure,and fluorescence property of a cadmium(II) complex based on mono salicylaldehyde Schiff base ligand |
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| Authors: | X Feng T Zhang J L Chen S Z Huo G Y Luo |
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| Institution: | 1. College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471022, P.R. China
2. School of Life Science and Technology, Nanyang Normal University, Nanyang, 473601, P.R. China
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| 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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