The tripodalligand (2‐aminoethyl)bis(2‐pyridylmethyl)amine (uns‐penp), known for its Cu/O2 intermediates, was modified at one side arm by a selection of aminoacids. With L‐Tyrosine (Tyr), L‐Histidine (His) and L‐Lysine (Lys) it was possible to introduce chirality into the tripodalligand system and to investigate the corresponding copper(I) complexes [CuL‐His(BPh3)uns‐penp}], [Cu(L‐Lys)uns‐penp]OTf
以其Cu / O 2中间体而闻名的三脚架配体(2-氨基乙基)双(2-吡啶基甲基)胺(unspenp)在一侧臂通过选择氨基酸进行了修饰。使用L-酪氨酸(Tyr),L-组氨酸(His)和L-赖氨酸(Lys),可以将手性引入三脚架配体系统并研究相应的铜(I)络合物[Cu L-His(BPh 3)[Un(pen)],[Cu(Lys)unspenp] OTf和[Cu(L-Tyr)unspenp] OTf。[Cu L-His(BPh 3)uns-penp}]可以进行结构表征,并代表具有组氨酸配体配位咪唑环的铜(I)配合物的第一个实例。此外,这些配合物表现出用过氧化氢作为氧化剂氧化硫代苯甲醚的催化活性。
Water-soluble tetrapodal N,O ligands incorporating soft N-heterocycles for the selective complexation of Am(iii) over Ln(iii)
complexes with log β110 = 4.0–4.4 (La–Eu). The selective back-extraction of Am(III) from organic solutions containing 4f and 5f elements was tested with the four water-soluble complexing agents. The ligand L3pz demonstrates poor stripping ability and selectivity. In contrast, the three ligands Lpy, Lpz and L3py give interesting back-extraction results with Eu/Am separation factors ranging from 36 to
Tuning the redox potentials of ternary cobalt(III) complexes containing various hydroxamates
作者:Péter Buglyó、István Kacsir、Máté Kozsup、Imre Nagy、Sándor Nagy、Attila Csaba Bényei、Éva Kováts、Etelka Farkas
DOI:10.1016/j.ica.2017.07.026
日期:2018.3
results, the 3+ oxidation state of the central cobalt ion was found to be extremely stabilized in the ternary complexes containing the doubly deprotonated benzohydroximate, but the metal ion is significantly more reducible in the ternary complexes with mono-deprotonated benzohydroxamate/derivative ligands. Measurable effect was not found on the redoxpotential via introduction of chloro or nitro substituents
Iron(
<scp>III</scp>
) Complexes with the Ligand
<i>N′</i>
,
<i>N′</i>
‐Bis[(2‐pyridyl)methyl]ethylenediamine (uns‐penp) and Its Amide Derivative
<i>N</i>
‐Acetyl‐
<i>N′</i>
,
<i>N′</i>
‐bis[(2‐pyridyl)methyl]ethylenediamine (acetyl‐uns‐penp)
作者:Jing‐Yuan Xu、Jörg Astner、Olaf Walter、Frank W. Heinemann、Siegfried Schindler、Michael Merkel、Bernt Krebs
DOI:10.1002/ejic.200500902
日期:2006.4
Synthesis and structural characterization of the iron(III) complexes of the tripodal ligandsN′,N′-bis[(2-pyridyl)methyl]ethylenediamine (uns-penp), [Fe(uns-penp)Cl2]ClO4·CH3CN, [Fe(uns-penp)Cl}2O](ClO4)2·2CH3CN and the amide derivative N-Acetyl-N′,N′-bis[(2-pyridyl)methyl]ethylenediamine (acetyl-uns-penp), [Fe2(acetyl-uns-penp)2O](ClO4)2·H2O, [Fe(acetyl-uns-penp)(tcc)Br]·(C2H5)2O (tcc = tetrachlorocatecholate)
Abstract A series of iron(II)/(III) and cobalt(II)/(III) complexes with the tetradendate tripodal ligands (2-aminoethyl)bis(2-pyridylmethyl)amine (uns-penp), its methylated derivatives Me 2 -uns-penp and Me 4 -uns-penp as well as the amide ligand N -acetyl- N , N -bis[(2-pyridyl)methyl]ethylenediamine (acetyl-uns-penp) were synthesized and structurally characterized. They have been investigated in