Copper(II) complexation by (pyridinyl)aminomethane-1,1-diphosphonic acid derivatives; Spectroscopic and potentiometric studies

Kowalik-Jankowska T.; Pietruszka M.; Jezierska J.; Matczak-Jon E.; Kafarski P.

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Copper(II) complexation by (pyridinyl)aminomethane-1,1-diphosphonic acid derivatives; Spectroscopic and potentiometric studies

机译：（吡啶基）氨基甲烷-1,1-二膦酸衍生物与铜（II）的络合;光谱和电位分析

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The complex formation between copper(II) and (pyridinyl)aminomethane-1,1- diphosphonic acid derivatives was studied by means of pH-potentiometry, spectroscopic methods (UV-Vis, EPR) and mass spectrometry (MS). The bisphosphonate ligands form polynuclear Cu_3H_xL_3 (x = 4,3, 2, 1, 0, -1) species besides the mononuclear 1:1 and 1:2 metal-to-ligand molar ratio complexes. Two phosphonate groups are basic binding sites for the metal ion. It is suggested that in the polynuclear complexes the ligands adopt chelating and bridging modes via the four oxygen atoms of the two phosphonate groups.

机译：借助pH电位法，光谱法（UV-Vis，EPR）和质谱（MS）研究了铜（II）与（吡啶基）氨基甲烷-1,1-二膦酸衍生物之间的络合物形成。除单核金属配体摩尔比为1：1和1：2以外，双膦酸酯配体还形成多核Cu_3H_xL_3（x = 4,3，2，1，0，-1）物种。两个膦酸酯基团是金属离子的基本结合位点。建议在多核络合物中，配体通过两个膦酸酯基团的四个氧原子采用螯合和桥联模式。

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《Polyhedron: The International Journal for Inorganic and Organometallic Chemistry》 |2011年第7期|共7页
作者
Kowalik-Jankowska T.; Pietruszka M.; Jezierska J.; Matczak-Jon E.; Kafarski P.;
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正文语种 eng
中图分类无机化学;
关键词
Copper(II) complexes; Diphosphonic acids; Spectroscopic studies; Stability constants;

机译：铜（II）配合物;二膦酸;光谱学研究;稳定性常数;

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1. Copper(II) complexation by (pyridinyl)aminomethane-1,1-diphosphonic acid derivatives; Spectroscopic and potentiometric studies [J] . Kowalik-Jankowska T., Pietruszka M., Jezierska J., Polyhedron: The International Journal for Inorganic and Organometallic Chemistry . 2011,第7期

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Copper(II) complexation by (pyridinyl)aminomethane-1,1-diphosphonic acid derivatives; Spectroscopic and potentiometric studies

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