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Crystal Structures and DNA Interaction Properties of Ni(Ⅱ) and Cd(Ⅱ) Complexes with a Semicarbazone Ligand Bearing Pyrazine Unit
Author NameAffiliationE-mail
MAO Pan-Dong College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China  
ZHAO Xiao-Lei College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China zhaoxiaolei@hpu.edu.cn; 
SHAO Zhi-Peng School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China  
LI Min School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China  
WU Wei-Na College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China wuwn08@hpu.edu.cn 
WANG Yuan College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China  
Abstract: Two complexes, namely[NiL2]·CH3OH·0.5H2O (1) and[Cd(HL)Cl2)] (2) (HL=1-(3-methylpyrazin-2-yl)ethylidene-4-phenylsemicarbazide) have been synthesized and characterized by single crystal X-ray diffraction, elemental analysis and IR spectroscopy. X-ray diffraction analysis results show that the central Ni(Ⅱ) ion in complex 1 is surrounded by two independent anionic ligands with N2O donor set, thus possesses a distorted octahedral coordination geometry. However, in complex 2, the Cd(Ⅱ) ion with a distorted square pyramidal is coordinated with one neutral tridentate ligand HL and two chloride anions. In addition, the fluorescence spectra indicate that the interactions of the complexes with DNA are stronger than that of the ligand HL. CCDC 1479242:1; 1479243:2.
Keywords: semicarbazone  Ni(Ⅱ) complex  Cd(Ⅱ) complex  pyrazine  crystal structure  DNA interaction
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MAO Pan-Dong,ZHAO Xiao-Lei,SHAO Zhi-Peng,LI Min,WU Wei-Na,WANG Yuan.Crystal Structures and DNA Interaction Properties of Ni(Ⅱ) and Cd(Ⅱ) Complexes with a Semicarbazone Ligand Bearing Pyrazine Unit[J].Chinese Journal of Inorganic Chemistry,2017,33(5):890-896.
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Chinese Journal of Inorganic Chemistry