铜 (ii) 与 3-(2-pyridyl)-4,5-dihydro-1H-pyrazoles 的配合物:合成、结构和电化学研究
摘要:
通过适当的有机配体与CuCl2·2H2O反应,得到了三种新的铜(ii)配合物与3-(2-吡啶基)-4,5-二氢-1H-吡唑配体。配合物的结构由X射线衍射确定。所有配合物的分子式均可写为2(L·MCl2)(L为有机配体)。任一铜离子的配位多面体是一个扭曲的三角双锥体,由两个 N 原子(来自吡唑啉和吡啶环)和一个轴向和两个桥接氯阴离子组成。采用循环伏安法研究了1,5-二苯基-3-(2-吡啶基)-4,5-二氢-1H-吡唑及其CuII配合物的电化学行为;提出了它们的电氧化和电还原机理。
3-(2-Pyridyl)-2-pyrazoline derivatives: novel fluorescent probes for Zn2+ ion
摘要:
Spectroscopic studies revealed that 3-(2-pyridyl)-2-pyrazoline derivatives have rather strong affinity toward divalent transition metal ions. but have almost no interaction with alkali and alkaline-earth metal ions. In the case of the 5-(4-cyanophenyl) derivative, enhancement of the fluorescence intensity was observed upon addition of the Zn2+ ion, while most of other transition metal ions caused complete quenching. (C) 2001 Elsevier Science Ltd. All rights reserved.