Citation: WANG Wan-Wan, WANG Yuan, ZHANG Ling, SONG Yu-Fei, WU Wei-Na, CHEN Zhong. Syntheses, Crystal Structures and DNA-Binding Properties of Cu(Ⅱ)/Ni(Ⅱ) Complexes with Acylhydrazone Ligand Bearing Pyrazine Unit[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(3): 563-568. doi: 10.11862/CJIC.2019.037 shu

Syntheses, Crystal Structures and DNA-Binding Properties of Cu(Ⅱ)/Ni(Ⅱ) Complexes with Acylhydrazone Ligand Bearing Pyrazine Unit

WANG Wan-Wan ¹ ,
WANG Yuan ^1,, ,
ZHANG Ling ¹ ,
SONG Yu-Fei ¹ ,
WU Wei-Na ^1,, ,
CHEN Zhong ²

1.
College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, Jiaozuo, Henan 454000, China
2.
School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China

Corresponding author: WANG Yuan, wangyuan08@hpu.edu.cn WU Wei-Na, wuwn08@hpu.edu.cn
Received Date: 5 November 2018
Revised Date: 27 November 2018

Figures(4)

Two complexes, namely[Ni(L)(HL)](SO₄)_0.5·3CH₃OH (1) and[Cu₂(L)₂SO₄]·1.5CH₃OH (2) (HL=3-methyl-2-acetylpyrazine benzoylhydrazone) have been synthesized and characterized by single crystal X-ray diffraction, elemental analysis and IR spectroscopy. X-ray diffraction analysis results showed that in complex 1, the center Ni(Ⅱ) ion with a distorted octahedron geometry is surrounded by two acylhydrazones with[ONN] donor set. However, complex 2 contains one discrete dimeric Cu(Ⅱ) molecule in the unit cell, in which two Cu(Ⅱ) ions were doubly bridged by two O atoms from two independent acylhydrazone ligands. Each of the Cu(Ⅱ) ions is also coordinated by two N atoms from one L^- ligand and one O atom from the η₂-SO₄^2- anion, thus giving a distorted square pyramid coordination geometry. Moreover, the fluorescence spectra indicated that the interaction of the complexes to DNA is stronger than that of the ligand HL.CCDC 1876785: 1; 1876789: 2.
- acylhydrazone,
- Cu(Ⅱ) complex,
- DNA-binding,
- Ni(Ⅱ) complex,
- pyrazine
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沈阳化工大学材料科学与工程学院沈阳 110142