Citation: FENG Xun, SONG Hong-Liang, YE Bao-Xian, HUO Su-Zhen, XIE Shi-Yu, GUO Jin-Zhong. Synthesis, Crystal Structure and Electrochemistry Properties of a Cobalt(Ⅱ) Complex Based on Asymmetry Schiff Base Ligand[J]. Chinese Journal of Structural Chemistry, ;2014, 33(6): 897-902. shu

Synthesis, Crystal Structure and Electrochemistry Properties of a Cobalt(Ⅱ) Complex Based on Asymmetry Schiff Base Ligand

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a. College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China;
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b. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China

Corresponding author: FENG Xun,
Received Date: 15 November 2013
Available Online: 5 March 2014
Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21273101) (No. 21273101) the Foundation of the Program for Backbone Teachers in Universities of Henan Province (No. 2012GGJS158) (No. 2012GGJS158) and the Foundation of Education Committee of Henan Province (No. 14B150033) (No. 142102310483)

A new cobalt(Ⅱ) complex [Co(NO₂-salen)₂]·1.5H₂O containing mono acetalization Schiff base ligand (NO₂-salen=N-5-nitro-salicylideneamino ethanato) has been prepared through one-pot template condensation, and has been structurally characterized by elemental analysis, IR spectra and X-ray diffraction. It is formulated as C₁₈H₂₃CoN₆O_7.5, crystallizes in the hexagonal system, space group of R-3c with α=25.895(18), b=25.895(18), c=35.075(6)Å, γ=120°, V=20368(3)Å and Z=36. The ligand of 5-nitrosalicylaldehyde-ethylene-diamine takes unusual mono asymmetry mode. The Co(Ⅱ) ion exhibits a coordination number of six, and assumes a distorted octahedral geometry with a N₂O₄ donor set. The neutral monomeric units of [Co(NO₂-salen)₂]·1.5H₂O are linked into a one-dimensional (1D) structure via the intermolecular hydrogen bonds and weak π-π stacking interactions. Cyclic-voltammetry measurement reveals the oxidation and reduction processes for the complex are irreversible in nature.
- X-ray single-crystal structure,
- N-5-nitro-salicylideneamino Schiff base,
- cobalt (Ⅱ) complex,
- cyclic-voltammetry
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