140875-88-3Relevant academic research and scientific papers
In Situ Ligand Formation in the Synthetic Processes from Mononuclear Dy(III) Compounds to Binuclear Dy(III) Compounds: Synthesis, Structure, Magnetic Behavior, and Theoretical Analysis
Zhang, Sheng,Tang, Jiamin,Zhang, Jin,Xu, Fang,Chen, Sanping,Hu, Dengwei,Yin, Bing,Zhang, Jiangwei
, p. 816 - 830 (2021)
Guided by the self-assembled process and mechanism, the strategy of in situ Schiff base reaction would be capable of bringing a feasible method to construct and synthesize lanthanide compounds with distinct structures and magnetic properties. A mononuclea
Synthesis, structure, DNA interaction, and hydrolytic function toward bis(p-nitrophenyl) phosphate of a heterobinuclear macrocyclic complex
Mao, Jia Wei,Zhou, Hong,Chen, Yun Feng,Cheng, Gong Zhen,Pan, Zhi Quan
, p. 385 - 391 (2012)
An asymmetrical bis-pyridine pendant-armed macrocyclic heterobinuclear complex, [ZnNiL](ClO4)2?CH3CN (H 2L was derived from the condensation between 3,3′-((ethane-1,2- diylbis((pyridin-2-ylmethyl)azanediyl))bis(methylene))bis(2-hydroxy-5- methylbenzaldehyde) and 1.3-diaminopropane), has been synthesized and characterized by physico-chemical and spectroscopic methods. The asymmetric unit contains two complete macrocyclic complexes that are nevertheless quite similar to one another. The Zn-Ni separations, bridged by the two phenoxides, are 3.107 and 3.141 A, respectively. The phosphate hydrolysis catalyzed by the complex was investigated using bis(4-nitrophenyl)phosphate (BNPP) as the substrate. The catalytic rate constant (k cat) is 1.64 × 10-3 s-1 at pH 7.4 and 25 °C, which is 10 8-fold higher than that of the corresponding uncatalyzed reaction. The interaction between the complex and calf thymus (CT) DNA was investigated by UV-vis absorption, viscosity experiments, and cyclic voltammetry. The complex shows good binding propensity to calf thymus DNA via intercalation with a binding constant of 5 × 104 M-1. The agarose gel electrophoresis studies show that the complex has a concentration-dependent DNA cleavage activity.
A simple and convenient method for syntheses of phenolic amino aldehyde ligands, enalH2 and tnalH2
Golchoubian,Waltz
, p. 3907 - 3912 (1998)
New efficient methods for synthesis of enalH2 or 1,6-bis(2-pyridyl)- 2,5-bis(2-hydroxy-3-formyl-5-methylbenzyl)-2,5-diazahexane 1a and of tnalH2 or 1,7-bis(2-pyridyl) -2,6-bis(2-hydroxy-3-formyl-5-methylbenzyl)-2,6- diazaheptane, 1b are described.
A new ligand H4Lox and its iron(III) complex as a platform for the development of heterotrimetallic complexes
Firmo, Roberta Nunes,de Souza, Isabela Cristina Aguiar,Miranda, Fabio da Silva,Pinheiro, Carlos Basílio,Resende, Jackson Antonio Lamounier Carmargos,Lanznaster, Mauricio
, p. 604 - 611 (2016)
The combination of multiple metal ions of different nature, in a single coordination compound, can provide a unique set of properties suitable for applications such as mimetization of the active site of enzymatic systems, development of new molecular magnetic materials and catalysts for photoinduced water splitting. Nonetheless, the preparation of heteromultimetallic complexes, in a controlled way, is a challenging task. In this work, we present a new ligand, H4Lox, designed as a platform for the synthesis of heterotrimetallic complexes. From H4Lox and its precursor H2L, two mononuclear iron(III) complexes, [Fe(L)]NO3·MeOH·2H2O (1) [Fe(H2Lox)]NO3·XH2O (2) were synthesized and fully characterized. The structure of 2 revealed a N2O2vacant coordination site comprised by two phenolate oxygen atoms and two oxime nitrogen atoms. DFT calculations and ESI-MS data demonstrate that complex 2 can accommodate two additional metal ions, in a stable heterotrimetallic complex. The effect of the ortho substituents of the phenolate groups (CHO and CNOH) in the electronic states of 1 and 2, respectively, was evaluated by UV–Vis spectroscopy, cyclic voltammetry and DFT calculations. A free energy correlation was found between the calculated electrophilicity index ω and the experimental half wave potentials of 1, 2 and their analogous complex [Fe(bbpen-Me)]+[33]. The electrophilicity index ω was used to estimate the FeIII/FeIIredox potential of the hypothetical [FeZnCl2(Lox)Ga(tpa)]2+complex.
Ligand ratio/solvent-influenced syntheses, crystal structures, and magnetic properties of polydentate Schiff base ligand-Dy(iii) compounds with β-diketonate ligands as co-ligands
Zhang, Sheng,Mo, Wenjiao,Zhang, Zengqi,Gao, Fei,Wang, Lei,Hu, Dengwei,Chen, Sanping
, p. 12466 - 12481 (2019/08/26)
Tuning the synthesis conditions and further regulating the magnetic dynamics of single-molecule magnets (SMMs) are crucial challenges for chemists. Some feasible approaches have been developed to understand magneto-structural correlations and regulate rel
A convenient and efficient one-step method for the synthesis of dicompartmental ligands with hexa- and tetradentate coordination sites
Golchoubian, Hamid,Mardani, Hamid Reza
experimental part, p. 151 - 155 (2010/12/19)
A convenient and more efficient method for the preparation of 1,6-bis(2-pyridyl)-2,5-bis(2hydroxy-3-formyl-5-methyl benzyl)-2,5-diazahexane, L1H2 and 1,7-bis(2-pyridyl)-2,6-bis(2-hydroxy-3-formyl- 5methyl benzyl)-2,6-diazaheptane, L2H2 are described. The ligands were prepared by reaction of two moles of 3(chloromethyl)-2-hydroxy-5- methyl benzaldehyde with a mole of N,N'-bis(2-pyridyl)dopamine in THF at ambient conditions in high yield (75-80%).
