Self-assembly in Schiff base lanthanide complexes — From supramolecular dimers to coordination polymers

2009 ◽  
Vol 87 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Wanda Radecka-Paryzek

A review is given of the latest contribution of the author’s research group to the coordination chemistry of Schiff base polyaza macrocycles and acyclic salicylaldimines. Focus is placed on the effectiveness of lanthanides in supramolecular self-assembly of the components leading to the formation of compounds with unusual properties and structures.Key words: Schiff base macrocycles, salicylaldimines, lanthanides, self-assembly, template synthesis.

2019 ◽  
Vol 43 (34) ◽  
pp. 13371-13380 ◽  
Author(s):  
Sheikdawood Parveen ◽  
Thathan Premkumar ◽  
Hung Huy Nguyen ◽  
Subbiah Govindarajan

For the first time, a new hydrazone Schiff base ligand and its Co(ii), Ni(ii), and Cu(ii) complexes were synthesised and characterised. Their antioxidant and binding activities towards CT-DNA and BSA were evaluated.


2015 ◽  
Vol 44 (3) ◽  
pp. 1292-1302 ◽  
Author(s):  
Lakshmi Kanta Das ◽  
Carlos J. Gómez-García ◽  
Ashutosh Ghosh

Three new 2D coordination polymers of different networks with significant variation in magnetic properties have been synthesized by changing the central metal in the trinuclear nodes.


2004 ◽  
Vol 08 (01) ◽  
pp. 1-25 ◽  
Author(s):  
Wyeth B. Callaway ◽  
Jacqueline M. Veauthier ◽  
Jonathan L. Sessler

In recent years, the field of porphyrin chemistry has expanded to include several new analogs of the original four pyrrole, carbon-bridged systems. This review traces the development of one such class of new macrocycles, namely Schiff-base porphyrin analogs. The review's focus is on the synthesis and properties of these new Schiff-base macrocycles that for ease of division have been divided into four classes: systems with two pyrrole rings, systems with three pyrrole or heterocyclic rings, systems with four pyrrole or heterocyclic rings, and systems with five or more pyrrole or heterocyclic rings. In addition to the role of metal ions as templating agents in the synthesis of these complexes, the rich coordination chemistry of several of the macrocycles is also discussed. X-ray crystallography has played an important role in determining the structures of many of these Schiff-base porphyrin analogs and many of the available structures have been incorporated into this review. Aromaticity of the macrocycles is discussed and has been evaluated from available electronic and NMR spectra. Finally, several potential applications of these molecules are discussed, briefly.


2014 ◽  
Vol 53 (15) ◽  
pp. 7803-7805 ◽  
Author(s):  
Kun Zhang ◽  
Chao Jin ◽  
Yuchen Sun ◽  
Feifan Chang ◽  
Wei Huang

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2317
Author(s):  
Olga Danilescu ◽  
Paulina N. Bourosh ◽  
Oleg Petuhov ◽  
Olga V. Kulikova ◽  
Ion Bulhac ◽  
...  

Based on solvothermal synthesis, self-assembly of the heptadentate 2,6-diacetylpyridine bis(nicotinoylhydrazone) Schiff base ligand (H2L) and Zn(II) and/or Cd(II) salts has led to the formation of three homometallic [CdL]n (1), {[CdL]∙0.5dmf∙H2O}n (2) and {[ZnL]∙0.5dmf∙1.5H2O}n (3), as well as two heterometallic {[Zn0.75Cd1.25L2]∙dmf∙0.5H2O}n (4) and {[MnZnL2]∙dmf∙3H2O}n coordination polymers. Compound 1 represents a 1D chain, whereas 2–5 are isostructural and isomorphous two-dimensional structures. The entire series was characterized by IR spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction and emission measurements. 2D coordination polymers accommodate water and dmf molecules in their cage-shaped interlayer spaces, which are released when the samples are heated. Thus, three solvated crystals were degassed at two temperatures and their photoluminescent and adsorption–desorption properties were recorded in order to validate this assumption. Solvent-free samples reveal an increase in volume pore, adsorption specific surface area and photoluminescence with regard to synthesized crystals.


2015 ◽  
Vol 435 ◽  
pp. 283-291 ◽  
Author(s):  
Tomislav Balić ◽  
Berislav Marković ◽  
Jarosław Jaźwiński ◽  
Dubravka Matković-Čalogović

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