Exploration of CH⋯π interactions involving the π-system of pseudohalide coligands in metal complexes of a Schiff-base ligand

CrystEngComm ◽  
2015 ◽  
Vol 17 (25) ◽  
pp. 4680-4690 ◽  
Author(s):  
Prateeti Chakraborty ◽  
Suranjana Purkait ◽  
Sandip Mondal ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
...  
Keyword(s):  
Schiff Base ◽  
Metal Complexes ◽  
Schiff Base Ligand ◽  
Self Assembly ◽  
The Self ◽  
Schiff Base Complexes ◽  
Π Interactions ◽  
Non Covalent Interactions ◽  
Covalent Interactions

The role of non-covalent interactions in the self-assembly of Schiff-base complexes of ZnII, CuII and NiII has been investigated experimentally and theoretically with especial attention to unconventional C–H⋯π interactions involving pseudohalide coligands.

Role of non-covalent interactions in the supramolecular architectures of mercury(ii) diphenyldithiophosphates: An experimental and theoretical investigation

2021 ◽  
Vol 45 (4) ◽  
pp. 2249-2263
Author(s):  
Pretam Kumar ◽  
Snehasis Banerjee ◽  
Anu Radha ◽  
Tahira Firdoos ◽  
Subash Chandra Sahoo ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Supramolecular Organization ◽  
Π Interactions ◽  
Supramolecular Architectures ◽  
Non Covalent Interactions ◽  
Covalent Interactions

The H-bond, spodium bond and CH⋯π interactions playing an important role in the supramolecular organization of two mercury(ii) diphenyldithiophosphate complexes have been discussed.

scholarly journals Amalgamation of Novel Schiff Base Ligand and Its Transition Metal Complexes and Their Biological Activity

2019 ◽  
pp. 1-13
Author(s):  
B. Akila ◽  
A. Xavier
Keyword(s):  
Antibacterial Activity ◽  
Schiff Base ◽  
Metal Complexes ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Electronic Spectroscopy ◽  
Antioxidant Properties ◽  
Salmonella Typhi ◽  
Metal Chelates ◽  
Schiff Base Complexes

Schiff base synthesized from 2-hydroxy-1-naphthaldehyde and 2-2’ (ethylene dioxy) bis ethylenediamine (L1) and its Metal complexes, [M (II) (L)6](where M= Mn(II), Ru(III), Cu(II)and V(V) L= Schiff base moiety), have been prepared and characterized by elemental analysis, spectroscopic measurements (infrared, electronic spectroscopy, 1H-NMR, EPR and Mass spectroscopy ). Elemental analysis of the metal complexes was suggested that the stoichiometry ratio is 1:1 (metal-ligand). The electronic spectra suggest an octahedral geometry for MC1and MC2 Schiff base complexes and distorted octahedral for MC3 and MC4 complexes. The Schiff base and its metal chelates have been screened for their invitro test antibacterial activity against three bacteria, gram-positive (Staphylococcus aureus) and gram-negative (Klebsiella pheneuammonia and Salmonella typhi). Two strains of fungus (Aspergillus niger and Candida albicans). The metal chelates were shown to possess more anti fungal activity compare then antibacterial activity and antioxidant properties. The complexes are highly active than the free Schiff-base ligand.    

scholarly journals Studying physisorption processes and molecular friction of cycloparaphenylene molecules on graphene nano-sized flakes: role of π⋯π and CH⋯π interactions

2017 ◽  
Vol 2 (3) ◽  
pp. 253-262 ◽  
Author(s):  
A. Pérez-Guardiola ◽  
A. J. Pérez-Jiménez ◽  
J. C. Sancho-García
Keyword(s):  
Cost Effective ◽  
Π Interactions ◽  
Graphene Flakes ◽  
Non Covalent Interactions ◽  
Molecular Friction ◽  
Covalent Interactions

We theoretically study, by means of dispersion-corrected and cost-effective methods, the strength of non-covalent interactions between cyclic organic nanorings and nano-sized graphene flakes acting as substrates.

scholarly journals Design of catalytic metal-organic assemblies via shape complementarity and conformational constraints in dual curvature ligands

2021 ◽  
Author(s):  
Cui-Lian Liu ◽  
Eduard Bobylev ◽  
Brice Kauffmann ◽  
Koen Robeyns ◽  
Yann Garcia ◽  
...  
Keyword(s):  
Self Assembly ◽  
Building Blocks ◽  
Alder Reaction ◽  
The Self ◽  
Supramolecular Catalysis ◽  
Shape Complementarity ◽  
Large Structures ◽  
Metal Organic ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Non-covalent interactions play an essential role in the folding and self-assembly of large biological assemblies. These interactions are not only a driving force for the formation of large structures but also control conformation and com-plementary shapes of subcomponents that promote the diversity of structures and functions of the resulting assemblies. Understanding how non-covalent interactions direct self-assembly and the effect of conformation and complementary shapes on self-assembled structures will help design artificial supramolecular systems with extended components and functions. Herein, we develop a strategy for controlling more complex self-assembly with lower symmetry and flexible building blocks that combine endohedral non-covalent interactions with a dual curvature in the ligand backbone to give additional shape complementarity. A Diels-Alder reaction was used to break the symmetry of the diazaanthracene units of the ligands to give dual curvature ligands with different shapes and endohedral groups (L1-L3). The self-assembly studies of these ligands demonstrated that non-covalent interactions and shape complementary effectively control the self-assembly and enable the design of cages for supramolecular catalysis.

The self-assembly switching of the group 13 tetrahedral Schiff base complexes by changing the character of coordination centre

2004 ◽  
Vol 28 (11) ◽  
pp. 1320-1325 ◽  
Author(s):  
Janusz Lewiński ◽  
Janusz Zachara ◽  
Patryk Stolarzewicz ◽  
Maciej Dranka ◽  
Edyta Kołodziejczyk ◽  
...  
Keyword(s):  
Schiff Base ◽  
Self Assembly ◽  
The Self ◽  
Schiff Base Complexes ◽  
Group 13
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