Publication Date:
2016-04-06
Description:
Two trinuclear Co II and Zn II complexes, [(CoL) 2 (OAc) 2 Co] and [(ZnL) 2 (OAc) 2 Zn], with an asymmetric Salen-type bisoxime ligand [H 2 L = 4-( N , N -diethylamine)-2,2′-[ethylenediyldioxybis(nitrilomethylidyne)]diphenol] were synthesized and characterized by elemental analyses, IR, UV/Vis, and fluorescent spectroscopy. The crystal structures of the Co II and Zn II complexes were determined by single-crystal X-ray diffraction methods. The Co II atom is pentacoodinated by N 2 O 2 donor atoms from the (L) 2– unit and one oxygen atom from the coordinated acetate ion, resulting in a trigonal bipyramid arrangement. With the help of intermolecular hydrogen bonding C–H ··· O and C–H ··· π interactions, a self-assembled continual zigzag chain-like supramolecular structure is formed. The Zn II atom is pentacoodinated by N 2 O 2 donor atoms from the (L) 2– unit and one oxygen atom from the coordinated acetate ion, resulting in an almost regular trigonal bipyramid arrangement. A self-assembled continual 1D supramolecular chain-like structure is formed by intermolecular hydrogen bonding C–H ··· O and C–H ··· π interactions. Additionally, the photophysical properties of the Co II and Zn II complexes were discussed.
Print ISSN:
0044-2313
Electronic ISSN:
1521-3749
Topics:
Chemistry and Pharmacology
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