Synthesis, Spectral and Magnetic Properties and Crystal Structures of Alkoxo-oxygen Coordinated Copper(II) Complexes of<i>N</i>,<i>N</i>′-Disubstituted Malonamide and Oxamide Derivatives
1:1 Copper(II) complexes with N,N′-bis(2-hydroxyethyl)malonamide (abbreviated as H4maae), MCu(maae) (M=Ca, Sr, Ba), and 2:1 copper(II) complexes with N,N′-bis(5-amino-3-hydroxypentyl)malonamide and N,N′-bis(5-amino-3-hydroxypentyl)oxamide (abbreviated as H4madpl and H4oxdpl, respectively),[Cu2(madpl)]·3H2O and [Cu2(oxdpl)]·2H2O, were prepared and characterized by elemental analyses, infrared and electronic
1:1 铜 (II) 与 N,N'-双(2-羟乙基)丙二酰胺(缩写为 H4maae)、MCu(maae)(M=Ca、Sr、Ba)和 2:1 铜 (II) 络合物的配合物与 N,N'-双(5-氨基-3-羟基戊基)丙二酰胺和 N,N'-双(5-氨基-3-羟基戊基)草酰胺(分别缩写为 H4madpl 和 H4oxdpl),[Cu2(madpl)]制备了·3H2O 和[Cu2(oxdpl)]·2H2O,并通过元素分析、红外和电子光谱以及磁化率对其进行了表征。2:1 配合物在 23.3–27.0×103 cm-1 处表现出具有烷氧-氧桥结构特征的带,并表现出非常强的反铁磁相互作用,而 1:1 配合物则没有这种带,它们的磁矩落在范围内用于普通单核铜 (II) 配合物的那些。[Cu2(madpl)]·3H2O和BaCu(maae)·7H2O的晶体结构由单晶X射线衍射法确定。[Cu2(madpl)]·3H
Synthesis, Characterization, and Catalase Activity of a Water-Soluble diMn<sup>III</sup>Complex of a Sulphonato-Substituted Schiff Base Ligand: An Efficient Catalyst for H<sub>2</sub>O<sub>2</sub>Disproportionation
A new diMnIII complex, Na[Mn2(3-Me-5-SO3-salpentO)(μ-MeO)(μ-AcO)(H2O)]·4H2O (1), where salpentOH = 1,5-bis(salicylidenamino) pentan-3-ol, was synthesized and structurally characterized. The complex possesses a bis(μ-alkoxo)(μ-acetato) triply bridged diMnIII core, the structure of which is retained upon dissolution. Complex 1 is highlyefficient to disproportionate H2O2 in an aqueous solution of pH
一种新的diMn III络合物Na [Mn 2(3-Me-5-SO 3 -salpentO)(μ-MeO)(μ-AcO)(H 2 O)]·4H 2 O(1),其中salpentOH = 1合成了5-5-双(水杨酰氨基)戊丹-3-醇并对其结构进行了表征。该配合物具有双(μ-烷氧基)(μ-乙酰基)三桥联的二锰III核,其结构在溶解时得以保留。络合物1在pH≥8.5的水溶液或DMF中使H 2 O 2歧化的效率很高,但活性仅略有下降。电喷雾电离质谱,EPR和紫外可见光谱法用于监测H 2 O2在缓冲的碱性介质中的歧化,表明循环过程中催化剂的主要活性形式以Mn III 2氧化态发生,并且起始配合物保留了催化过程中的双核和组成,其中乙酸盐从桥联过渡到末端配体。UV-vis和h的拉曼光谱2 ö 2 + 1 +卜4的DMF NOH混合物表明,催化周期涉及的Mn III 2 / Mn为IV 2的氧化水平。在pH
Complexes of ligands providing endogenous bridges. Part 1. The syntheses and crystal structures of barium and lead(<scp>II</scp>) complexes of macrocyclic Schiff bases derived from heterocyclic dicarbonyls and 1, n-diamino-n′-hydroxyalkanes (n,n′= 3,2; 4,2; or 5,3)
作者:Harry Adams、Neil A. Bailey、David E. Fenton、Rosalind J. Good、Richard Moody、Cecilia O. Rodriguez de Barbarin
DOI:10.1039/dt9870000207
日期:——
Barium and lead(II) complexes of tetraimine Schiff base macrocycles derivedfrom the (2 + 2) condensation of heterocyclic dicarbonyls (2,6-diacetylpyridine and furan-2,5-dicarbaldehyde) and 1,n-diamino-n′-hydroxyalkanes (1,3-diamino-2-hydroxypropane, 1,4-diamino-2-hydroxybutane, and 1,5-diamino-3-hydroxypentane) are reported. The crystalstructures of four complexes have been determined.
Synthesis, structure and catalase-like activity of dimanganese(iii) complexes of 1,5-bis(X-salicylidenamino)pentan-3-ol (X = 3- and 5-methyl). Influence of phenyl-ring substituents on catalytic activity
The diMn(III) complexes [Mn2(5-Me-salpentO)(mu-MeO)(mu-AcO)(H2O)Br] (1) and [Mn2(3-Me-salpentO)(mu-MeO)(mu-AcO)(MeOH)2]Br (2), where salpentOH = 1,5-bis(salicylidenamino)pentan-3-ol, were synthesised and structurally characterized. The two complexes include a bis(micro-alkoxo)(micro-acetato) triply-bridged diMn(III) core with an Mn...Mn separation of 2.93-2.94 A, the structure of which is retained
The X-ray crystal structure and some properties of a planar tetracopper(<scp>II</scp>) macrocyclic complex containing a µ<sub>4</sub>-hydroxo bridge
作者:Vickie McKee、Santosh S. Tandon
DOI:10.1039/c39880000385
日期:——
A planar, tetranuclear copper(II) complex of a macrocyclic ligand has been synthesized; the X-raystructure shows that the complex also contains a µ4-hydroxo ligand bound to each of the four copper ions and coplanar with them.