Formation of a Magnetically Coupled Neutral [4×4] Square Grid from a 2,6‐Pyridinedicarbaldehyde Bis(hydrazone) Ligand

Recent developments in supramolecular complexes of azabenzenes containing one to four N atoms: synthetic strategies, structures, and magnetic properties

“…Amit Adhikary and coworkers in 2014 reported the potential ligand L3, which had the inclusion of pyridine ring at the center with two o-vanillin groups present at the terminal and both the groups were connected by a carbohydrazide linkage. 45 At room temperature when L3 was reacted with methanolic solution of The molecule had one inversion centre and fourfold rotational axis. Variable temperature magnetic susceptibility in the form of c m T was studied for the complex CuL3.…”

“…Amit Adhikary and coworkers in 2014 reported the potential ligand L3 , which had the inclusion of pyridine ring at the center with two o -vanillin groups present at the terminal and both the groups were connected by a carbohydrazide linkage. 45 At room temperature when L3 was reacted with methanolic solution of Cu(ClO 4 ) 2 ·6H 2 O a novel [4 × 4] metallogrid complex [Cu 16 ( L3 ) 8 ](dmf) 3 ( CuL3 ) was formed through self-assembly. The ligand backbone contained four coordination pockets having unsymmetrical coordination modes due to the non-participation of one methoxy group present at terminal side of the ligand.…”

Synthesis, crystal structures, and luminescent properties of Zn(ii), Cd(ii), Eu(iii) complexes and detection of Fe(iii) ions based on a diacylhydrazone Schiff base

“…As a peculiar kind of Schiff base, the diacylhydrazone Schiff base formed by succinic dihydrazide not only shows good stability because of the p-p conjugated system 2,3 but also provides greater exibility in three-dimensional space on account of the free rotation of the C-C single bond in the succinoyl fraction 4 so that this kind of ligand exhibits strong coordination abilities and good characteristics of forming a variety of complex structures. Particularly, acylhydrazone metal complexes have found extensive application in diverse elds, such as magnetism, [5][6][7][8] catalytic performance, [9][10][11][12] biological function 13,14 and molecular recognition. [15][16][17][18] And the application of rare earth metal complexes in ion recognition has attracted more and more attention due to their near infrared luminescence properties.…”

Synthesis, density functional theory calculations and luminescence of lanthanide complexes with 2,6‐bis[(3‐methoxybenzylidene)hydrazinocarbonyl] pyridine Schiff base ligand

“…In the recent past, pyridine‐diacylhydrazones ligands possessing a central pyridine ring and two alkoxybenzaldehyde moieties on each side connected by a carbohydrazide linkage have attracted much attention not only for their aesthetically fascinating structures but also for their broad range of biological activities such as antioxidant, antimicrobial, anticancer, antiinflammatory, analgesic, hypotensive, agonistic, and hallucinogenic . Furthermore, pyridine‐diacylhydrazones are important multidentate ligands for the construction of coordination complexes with metal centers . Their metal complexes have attracted intense interest in many areas such as multimetallic enzymes, homogeneous and heterogeneous catalysis …”