Bis(3-methylsalicylato)bis(picolinamide)copper(II) complex — preparation, spectral properties and supposed structure

IF 0.9 Q4 CHEMISTRY, MULTIDISCIPLINARY
S. Matejová, Miroslava Puchoňová, Dominika Hrindová, V. Jorík, M. Mazúr, D. Valigura
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引用次数: 0

Abstract

Abstract Blue methylsalicylatocopper(II) complex with picolinamide Cu(3-Mesal)2(pnia)2 has been prepared and characterized by elemental analysis and spectral methods. Based on the infrared spectra, monodentate coordination of 3-methylsalicylate anion has been assumed and the coordination variability of the anion has been shown. By determination and refinement of the unit cell from powder diffraction data, the existence of a monomeric Cu(II) complex can be anticipated. EPR spectrum of the complex is in good agreement with these results. The g-factors fulfil the relation g|| > g┴ > 2.0023, which is consistent with the dx2 – y2 ground electronic state and indicates coordination sphere of distorted tetragonal symmetry {CuN2O2O2´} for the central copper(II) ions.
双(3-甲基水杨酸酯)双(吡啶酰胺)铜(II)配合物的制备、光谱性质和假设结构
摘要制备了甲基水杨酸-生育铜(II)与吡啶甲酰胺Cu(3-甲基水杨酸)2(pnia)2的蓝色配合物,并用元素分析和光谱方法对其进行了表征。基于红外光谱,假定3-甲基水杨酸根阴离子为单齿配位,并显示了阴离子的配位变异性。通过从粉末衍射数据中测定和细化晶胞,可以预期单体Cu(II)络合物的存在。配合物的EPR谱与这些结果基本一致。g因子满足关系式g||>g┴ > 2.0023,这与dx2–y2基态一致,表明中心铜(II)离子的配位球为扭曲的四方对称{CuN2O2O2´}。
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来源期刊
Acta Chimica Slovaca
Acta Chimica Slovaca CHEMISTRY, MULTIDISCIPLINARY-
自引率
12.50%
发文量
11
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