Mass spectra of some bivalent transition-metal ion chelates with pyridylazo phenols and naphthols
作者:D. Betteridge、D. John
DOI:10.1016/0039-9140(68)80046-3
日期:1968.11
2- and 4-(2-pyridylazo)phenol, 2-(2-pyridylazo)-1- and 1-(2-pyridylazo)-2-naphthol and several chelates of these compounds with manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II) are discussed. Comparisons are made with the results of solution studies of complex formation of the same chelates.
Polymer-grafted and neat vanadium(V) complexes as functional mimics of haloperoxidases
作者:Mannar R. Maurya、Nikita Chaudhary、Fernando Avecilla
DOI:10.1016/j.poly.2013.09.021
日期:2014.1
characterized by various spectroscopic techniques (IR, electronic, NMR ( 1 H and 51 V) and electron paramagnetic resonance (EPR)), thermal, field-emission scanning electron micrographs (FE-SEM) as well as energy dispersive X-ray (EDX) studies. The crystal and molecular structure of 3 has been determined, confirming the ONN binding mode of I . The polymer-grafted complex 4 has been used for the oxidative bromination
摘要一元三齿ONN供体配体1-(2-吡啶偶氮)-2-萘酚[Hpan(I)]与[V IV O(acac)2]在干燥的甲醇中反应生成氧化钒(IV)络合物[V IV O (acac)(pan)](1)。二氧化钒(V)络合物[VVO(pan)} 2(μ-O)2](2)通过在甲醇中空中氧化1获得。络合物2也可以直接通过[V IV O(acac)2]与I反应,然后在甲醇中进行空气氧化来直接制备。用H 2 O 2在甲醇中处理1或2,得到氧化单过氧化钒(V)络合物[VVO(O 2)(pan)(MeOH)](3)。在DMF中,5%的二乙烯基苯(PS-im)与2交联的咪唑基甲基聚苯乙烯的反应导致形成了聚合物接枝的二氧化钒(V)络合物PS-im [VVO 2(pan)](4)。所有这些复合物的特征在于各种光谱技术(红外,电子,NMR(1 H和51 V)和电子顺磁共振(EPR),热场发射扫描电子显微照片(FE-
Formation of the<i>N</i>,<i>N</i>-Bidentate Chelates of 2-(2-Pyridylazo)phenolic Ligands with Nickel(II) in Nonaqueous Solvents
N,N-bidentate 1:2 complexes of nickel(II) with various N,N,O-terdentate 2-(2-pyridylazo)phenolic ligands was detected spectrophotometrically in ethyl acetate and was examined with respect to the influences of Bronsted bases, the counter anions in the nickel(II) salts employed, solvent basicity, and the steric requirements around the donor nitrogen atoms in the ligand in the 1:2 complex. It is concluded
在乙酸乙酯中通过分光光度法检测镍 (II) 与各种 N,N,O-三齿 2-(2-吡啶偶氮) 酚配体的 N,N-二齿 1:2 配合物的形成,并检查了布朗斯台德碱、所用镍 (II) 盐中的抗衡阴离子、溶剂碱度以及 1:2 配合物中配体中供体氮原子周围的空间要求。得出的结论是,溶液中 N,N-二齿复合物的稳定性主要取决于 NiX2 和溶剂中抗衡阴离子 X 的碱度。在1-(2-吡啶偶氮)-2-萘酚的情况下,由于萘环的空间位阻高,即使在二恶烷等低碱度的溶剂中也未观察到N,N-二齿络合物的形成.