Lewis acidic zinc(II) salen-type Schiff-base complexes: sensing properties and responsive nanostructures

2021 ◽  
Author(s):  
Santo Di Bella
Keyword(s):  
Schiff Base ◽  
Schiff Base Complexes ◽  
Sensing Properties

In this frontier article some peculiar characteristics of Zn(salen)-type Schiff-base complexes are reviewed. The paper is mainly focused on the most recent and relevant achievements on responsive supramolecular nanostructures and...

scholarly journals On the Aggregation and Sensing Properties of Zinc(II) Schiff-Base Complexes of Salen-Type Ligands

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2514 ◽  
Author(s):  
Consiglio ◽  
Oliveri ◽  
Failla ◽  
Di Bella
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Coordination Compounds ◽  
Cell Imaging ◽  
Spectroscopic Properties ◽  
Lewis Base ◽  
Schiff Base Complexes ◽  
Sensing Properties ◽  
Lewis Bases

The zinc(II) ion forms stable complexes with a wide variety of ligands, but those related to Schiff-bases are among the most largely investigated. This review deals with the peculiar aggregation characteristics of Zn(II) Schiff-base complexes from tetradentate N2O2 salen-type ligands, L, derivatives from salicylaldehydes and 1,2-diamines, and is mostly focused on their spectroscopic properties in solution. Thanks to their Lewis acidic character, ZnL complexes show interesting structural, nanostructural, and aggregation/deaggregation properties in relation to the absence/presence of a Lewis base. Deaggregation of these complexes is accompanied by relevant changes of their spectroscopic properties that can appropriately be exploited for sensing Lewis bases. Thus, ZnL complexes have been investigated as chromogenic and fluorogenic chemosensors of charged and neutral Lewis bases, including cell imaging, and have shown to be selective and sensitive to the Lewis basicity of the involved species. From these studies emerges that these popular, Lewis acidic bis(salicylaldiminato)Zn(II) Schiff-base complexes represent classical coordination compounds for modern applications.

Co(II) and Cu(II) Schiff base complexes of bis(N-(4-diethylamino-2-methylphenyl)-3,5-di-tert-butylsalicylaldimine): Electrochemical and X-ray structural study

2008 ◽  
Vol 19 (5) ◽  
pp. 749-755 ◽  
Author(s):  
Mahmut Ulusoy ◽  
Hasan Karabıyık ◽  
Rafet Kılınçarslan ◽  
Muhittin Aygün ◽  
Bekir Çetinkaya ◽  
...  
Keyword(s):  
Schiff Base ◽  
Structural Study ◽  
Schiff Base Complexes ◽  
X Ray

Functional substituted Cu(II) Schiff base complexes, syntheses, X-ray and theoretical characterizations, and investigations of their polyphenol oxidase- and peroxidase-like activities

2021 ◽  
Vol 1232 ◽  
pp. 129975
Author(s):  
Murat Tuna ◽  
Salih Zeki Yildiz ◽  
Gulnur Arabaci ◽  
Zeynep Denli ◽  
Nagihan Çaylak Delibaş ◽  
...  
Keyword(s):  
Schiff Base ◽  
Polyphenol Oxidase ◽  
Schiff Base Complexes ◽  
X Ray

scholarly journals Utilization and simulation of innovative new binuclear Co(ii), Ni(ii), Cu(ii), and Zn(ii) diimine Schiff base complexes in sterilization and coronavirus resistance (Covid-19)

2021 ◽  
Vol 19 (1) ◽  
pp. 772-784
Author(s):  
Moamen S. Refat ◽  
Ahmed Gaber ◽  
Walaa F. Alsanie ◽  
Mohamed I. Kobeasy ◽  
Rozan Zakaria ◽  
...  
Keyword(s):  
Schiff Base ◽  
Molecular Docking ◽  
Metal Ions ◽  
Free Ligand ◽  
Schiff Base Complexes ◽  
Hydroxyl Groups ◽  
Binuclear Complexes ◽  
Central Metal ◽  
H Nmr ◽  
Biological Studies

Abstract This article aimed at the synthesis and molecular docking assessment of new diimine Schiff base ligand, namely 2-((E)-(2-((Z)-2-(4-chlorophenyl)-2-hydroxyvinyl)hydrazono) methyl)-6-methoxyphenol (methoxy-diim), via the condensation of 1-(4-chloro-phenyl)-2-hydrazino-ethenol compound with 2-((E)-(2-((Z)-2-(4-chlorophenyl)-2-hydroxy vinyl) hydrazono)methyl)-6-methoxyphenol in acetic acid as well as the preparation of new binuclear complexes of Co(ii), Ni(ii), Cu(ii), and Zn(ii). The following synthesized complexes were prepared in a ratio of 2:1 (metal/ligand). The 1H-NMR, UV-Vis, and FTIR spectroscopic data; molar conductivity measurements; and microanalytical, XRD, TGA/DTG, and biological studies were carried out to determine the molecular structure of these complexes. According to the spectroscopic analysis, the two central metal ions were coordinated with the diamine ligand via the nitrogen of the hydrazine and oxygen of the hydroxyl groups for the first metal ions and via the nitrogen of the hydrazine and oxygen of the phenol group for the second metal ions. Molecular docking for the free ligand was carried out against the breast cancer 3hb5-oxidoreductase and the 4o1v-protein binding kidney cancer and COVID-19 protease, and good results were obtained.

An insight to the noncovalent interactions in two triamine based mononuclear iron(III) Schiff base complexes with special emphasis on the formation of Br•••π halogen bonding

CrystEngComm ◽  
2021 ◽  
Author(s):  
Shouvik Chattopadhyay ◽  
Tanmoy Basak ◽  
Antonio Frontera
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Noncovalent Interactions ◽  
Halogen Bonding ◽  
Schiff Base Complexes ◽  
X Ray ◽  
Mononuclear Iron

Two mononuclear iron(III) complexes, [FeL1Cl]∙CH3CN (1) and [FeL2(N3)] (2) {H2L1= N,N′-bis(5-chlorosalicylidene)diethylenetriamine and H2L2= N,N′-bis(5-bromosalicylidene)diethylenetriamine}, have been synthesized and characterized by X-ray crystallographic studies. In the solid state, there are strong...

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