Abstract A general protocol for the coupling of mono- and dihalo-1,10-phenanthrolines with diethyl phosphite is reported. This reaction proceeds smoothly in the presence of a Pd(OAc)2/dppf catalytic system and triethylamine as a base. A general protocol for the coupling of mono- and dihalo-1,10-phenanthrolines with diethyl phosphite is reported. This reaction proceeds smoothly in the presence of a
stability constants of Nd(III) complexation with C4-POPhen in the counteranions of Cl–, NO3–, and ClO4– systems were determined through UV–vis titration, and a much larger value of log β of complexes was found in the ClO4– system, which was in good agreement with the results of solvent extraction. In addition, the structures of C2-POPhen complexation with Ln(NO3)3/Ln(ClO4)3 in the solid state were clearly
Selective Separation and Complexation of Trivalent Actinide and Lanthanide by a Tetradentate Soft–Hard Donor Ligand: Solvent Extraction, Spectroscopy, and DFT Calculations
extract Am(III) over Eu(III) with an extremely fast extraction kinetics. NMR titration studies suggest that only 1:1 complexes of Ln(III) with C2-POPhen formed in CH3OH in the presence of a significant amount of nitrate, while both 1:1 and 2:1 complexes species could form between C2-POPhen and Ln(III) perchlorate in CH3OH without nitrate ions. The stability constants for the complexation of Am(III) and Ln(III)
Supramolecular Architectures Based on Phosphonic Acid Diesters
作者:Alla Lemeune、Alexander Yu. Mitrofanov、Yoann Rousselin、Christine Stern、Roger Guilard、Yulia Yu. Enakieva、Yulia G. Gorbunova、Sergey E. Nefedov
DOI:10.1080/10426507.2014.985823
日期:2015.6.3
GRAPHICAL ABSTRACT Abstract The interest of phosphonicacid dialkyl esters for generation of metal-organic materials is discussed using derivatives of porphyrin and 1,10-phenanthroline series as representative examples.
Two series of copper(I) complexes with diethoxyphosphoryl-substituted 1,10-phenanthroline ligands were synthesized and characterized in the solid state and in solution. The first comprised mixed-ligand CuI complexes with phenanthroline and triphenylphosphine. The second series includes bis-chelates with two phenanthroline ligands. According to the X-ray data for the six complexes, the ditopic phenanthroline
合成了两个系列的铜 (I) 配合物与二乙氧基磷酰基取代的 1,10-菲咯啉配体,并在固态和溶液中表征。第一种包括与菲咯啉和三苯基膦的混合配体 CuI 复合物。第二个系列包括具有两个菲咯啉配体的双螯合物。根据六种配合物的 X 射线数据,双位菲咯啉配体通过两个系列中的两个氮原子与铜 (I) 原子呈双齿配位。通过 1 H 和 31 P NMR 光谱、电化学和光谱电化学研究了涉及不同菲咯啉铜 (I) 物种的溶液平衡。这两个系列的这些不稳定配合物的溶液形态不同,取决于溶剂的性质和菲咯啉骨架上磷取代基的位置。配位溶剂可以取代金属中心内部配位球中的溴化物、三苯基膦,甚至菲咯啉配体。即使在 CH2Cl2 和 CHCl3 等非配位溶剂中,铜 (I) 与 α-取代的菲咯啉的配合物也很容易解离。在使用的溶液条件下观察到导致较少空间位阻物种的配体交换反应。菲咯啉螯合剂的配位模式在任何使用的溶液条件下都不会改变,并