首页> 外文期刊>RSC Advances >Isolation of proton transfer complexes containing 4-picolinium as cation and pyridine-2,6-dicarboxylate complex as anion: crystallographic and spectral investigations, antioxidant activities and molecular docking studies
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Isolation of proton transfer complexes containing 4-picolinium as cation and pyridine-2,6-dicarboxylate complex as anion: crystallographic and spectral investigations, antioxidant activities and molecular docking studies

机译:含有4-吡啶鎓作为阴离子和吡啶-2,6-二羧酸酯的质子转移络合物的分离为阴离子:结晶和光谱研究,抗氧化活性和分子对接研究

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摘要

Three novel complexes with stoichiometry [4-pic-H][M(pda)(2)]center dot 2H(2)O [M = Cr (1), Fe (2) and Co (3); H(2)pda = pyridine-2,6-dicarboxylic acid and 4-pic = 4-picoline] have been prepared. The complexes (1- 3) are characterized using elemental analysis, TGA, CV, FTIR, ESI mass, H-1 & C-13 NMR, EPR, UV Visible, fluorescence, magnetic and X-ray studies. Spectral data ascertained the bonding modes and the geometry of the complexes. Single crystal X-ray data of (2) and (3) revealed the formation of proton transfer complexes in which a proton is transferred from the H2pda moiety to the pyridine nitrogen of 4-pic. Thermal and ESI mass data confirmed the proposed stoichiometry of the complexes. Cyclic voltammetric (CV) studies confirm the formation of M-II/M-III quasi-reversible redox couples in solution. The antioxidant activity of (3) assessed using DPPH and hydrogen peroxide assays has suggested that the present compounds may be used as potent antioxidants. Molecular docking studies performed for (2) and (3) reveal that the present complexes can efficiently bind with DNA receptor with free energy of binding (FEB) values of -314 (2) and -276.8 kcal mol(-1) (3). The molecular docking studies indicated a higher binding ability of (2) to DNA compared to that of (3).
机译:具有化学计量的三种新络合物[4-PIC-H] [M(PDA)(2)]中心点2H(2)O [M = Cr(1),Fe(2)和Co(3);已经制备了H(2)PDA =吡啶-2,6-二羧酸和4-PIC = 4-吡啶]。复合物(1-3)的特征在于使用元素分析,TGA,CV,FTIR,ESI质量,H-1和C-13 NMR,EPR,UV可见,荧光,磁性和X射线研究。光谱数据确定键合模式和复合物的几何形状。 (2)和(3)的单晶X射线数据显示了质子转移复合物的形成,其中质子从H 2 PDA部分转移到4-PIC的吡啶氮。热量和ESI质量数据证实了复合物的提出的化学计量。循环伏安(CV)研究证实了溶液中M-II / M-III准可逆氧化还原耦合的形成。使用DPPH和过氧化氢测定评估的(3)的抗氧化活性表明本发明的化合物可用作有效的抗氧化剂。对(2)和(3)进行的分子对接研究表明,本络合物可以有效地与DNA受体有效结合,所述DNA受体具有无结合能量(2月)的可自由能-314(2)和-276.8 kcal(-1)(3)(3) 。分子对接研究表明(2)对DNA的较高结合能力与(3)相比。

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  • 来源
    《RSC Advances》 |2016年第14期|共11页
  • 作者单位

    Aligarh Muslim Univ Dept Chem Aligarh 202002 Uttar Pradesh India;

    Aligarh Muslim Univ Dept Chem Aligarh 202002 Uttar Pradesh India;

    Aligarh Muslim Univ Dept Chem Aligarh 202002 Uttar Pradesh India;

    Jamia Millia Islamia Dept Chem New Delhi 110025 India;

    Jamia Millia Islamia Dept Chem New Delhi 110025 India;

    Aligarh Muslim Univ Dept Chem Aligarh 202002 Uttar Pradesh India;

    Aligarh Muslim Univ Dept Chem Aligarh 202002 Uttar Pradesh India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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