scholarly journals Advances in ligand-unsupported argentophilic interactions in crystal engineering: an emerging platform for supramolecular architectures

2020 ◽  
Vol 7 (19) ◽  
pp. 3735-3764 ◽  
Author(s):  
Amanpreet Kaur Jassal
Keyword(s):  
Crystal Engineering ◽  
Supramolecular Architectures ◽  
Recent Developments ◽  
Diverse Interactions ◽  
Argentophilic Interactions

Ligand-unsupported argentophilic interactions are described, emphasizing reticular design and recent developments in advanced synthetic strategies, and highlighting diverse interactions that are useful for the construction of unmitigated networks.

Supramolecular Architectures of Meloxicam Carboxylic Acid Cocrystals, a Crystal Engineering Case Study

2010 ◽  
Vol 10 (10) ◽  
pp. 4401-4413 ◽  
Author(s):  
Miranda L. Cheney ◽  
David R. Weyna ◽  
Ning Shan ◽  
Mazen Hanna ◽  
Lukasz Wojtas ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Crystal Engineering ◽  
Supramolecular Architectures

Crystal Engineering Studies on Ionic Crystals of Pyridine and Carboxylic Acid Derivatives Containing Amide Functional Groups

2010 ◽  
Vol 63 (4) ◽  
pp. 578 ◽  
Author(s):  
Lalit Rajput ◽  
Ramkinkar Santra ◽  
Kumar Biradha
Keyword(s):  
Crystal Engineering ◽  
Intramolecular Hydrogen Bonding ◽  
Supramolecular Synthon ◽  
Pyromellitic Acid ◽  
Trimesic Acid ◽  
Supramolecular Architectures ◽  
Pyridinium Cations ◽  
Intramolecular Hydrogen ◽  
Hydroxy Groups ◽  
Planar Geometries

Seven crystal structures of pyromellitic acid or trimesic acid salts of molecules that contain pyridine and amide functionalities were determined and their structures were analyzed in detail in terms of various intermolecular interactions. The presence of multiple functionalities (acid, pyridine, amide, and hydroxy groups) in these structures resulted in diversified supramolecular architectures. Amide-to-amide hydrogen bonds are not observed in any of these structures because of interference by the anions, water molecules, or pyridinium cations. The symmetry of the components was found to be important in determining the resultant supramolecular synthon and, therefore, the overall architecture. The pyromellitate anions exhibited four types of geometries which, differ in valencies and intramolecular hydrogen bonding, and these anions also exhibit self stacks when they have planar geometries.

scholarly journals Assembly with Multinuclear Silver-Ethynediide/-Ethynide Supramolecular Synthons

2014 ◽  
Vol 70 (a1) ◽  
pp. C633-C633
Author(s):  
Thomas Mak
Keyword(s):  
Systematic Investigation ◽  
Supramolecular Network ◽  
Supramolecular Synthons ◽  
The Past ◽  
Supramolecular Architectures ◽  
Double Salts ◽  
Argentophilic Interactions ◽  
Variable Coordination

Over the past 15 years, our group has conducted a systematic investigation on the synthesis and structural characterization of a series of silver(I) double and multiple salts containing silver carbide Ag2C2n (n = 1, 2), in which the all-carbon dianion ethynediide C22-is generally capsulated inside a polyhedral Agm (m = 6-10) cage, whereas C42-exhibits variable coordination modes involving each terminal triple-bond and a Agm (m = 3-5) basket. Recently we reported the first successful synthesis of their unstable higher homologues Ag2C6and Ag2C8, which were characterized through X-ray structure determination of their crystalline double salts Ag2C6·8AgCF3CO2·6H2O (3), 4(Ag2C6)·16AgCF3CO2·14.5DMSO and 2.5(Ag2C8)·10AgCF3CO2·10DMSO (Figure 1).[1] Our concomitant research program focused on silver(I) coordination and supramolecular network assembly based on multinuclear aggregates containing various kinds of carbon-rich ethynide ligands has established the robustness of multinuclear metal-ligand silver-ethynide supramolecular synthons symbolized as C2@Agn (n = 5-10), Ag4⊂C≡C–C≡C⊃Ag4, Agn⊂C6H4(n = 7-9), Agn⊂C≡C–R–C≡C⊃Agn (R = o-, m-, p-C6H4; n = 4, 5) and R–C≡C⊃Agn (R = aryl, alkyl, heterocycle,...; n = 4, 5), which function as versatile structural building units for the construction of a variety of discrete molecules, high-nuclearity clusters,[2] as well as 1D-3D coordination and supramolecular architectures.[3] In the absence of a definitive theoretical study, an empirical bonding model involving ionic, covalent and argentophilic interactions that consolidate the above-mentioned supramolecular synthons is proposed, which can account for the fact that analogous synthons have not been found for copper(I) and gold(I). This work is supported by Hong Kong Research Grants Council GRF CUHK 402710

scholarly journals Halogen bonding in the co-crystallization of potentially ditopic diiodotetrafluorobenzene: a powerful tool for constructing multicomponent supramolecular assemblies

2020 ◽  
Vol 7 (12) ◽  
pp. 1906-1932
Author(s):  
Xue-Hua Ding ◽  
Yong-Zheng Chang ◽  
Chang-Jin Ou ◽  
Jin-Yi Lin ◽  
Ling-Hai Xie ◽  
...  
Keyword(s):  
Crystal Engineering ◽  
Self Assembly ◽  
Functional Materials ◽  
Halogen Bonding ◽  
Soft Materials ◽  
Organometallic Complexes ◽  
Point Of View ◽  
Linear Optics ◽  
Non Linear Optics ◽  
Supramolecular Architectures

Abstract Halogen bonding is emerging as a significant driving force for supramolecular self-assembly and has aroused great interest during the last two decades. Among the various halogen-bonding donors, we take notice of the ability of 1,4-diiodotetrafluorobenzene (1,4-DITFB) to co-crystallize with diverse halogen-bonding acceptors in the range from neutral Lewis bases (nitrogen-containing compounds, N-oxides, chalcogenides, aromatic hydrocarbons and organometallic complexes) to anions (halide ions, thio/selenocyanate ions and tetrahedral oxyanions), leading to a great variety of supramolecular architectures such as discrete assemblies, 1D infinite chains and 2D/3D networks. Some of them act as promising functional materials (e.g. fluorescence, phosphorescence, optical waveguide, laser, non-linear optics, dielectric and magnetism) and soft materials (e.g. liquid crystal and supramolecular gel). Here we focus on the supramolecular structures of multicomponent complexes and their related physicochemical properties, highlight representative examples and show clearly the main directions that remain to be developed and improved in this area. From the point of view of crystal engineering and supramolecular chemistry, the complexes summarized here should give helpful information for further design and investigation of the elusive category of halogen-bonding supramolecular functional materials.

Recent Developments in Crystal Engineering

2011 ◽  
Vol 11 (4) ◽  
pp. 875-886 ◽  
Author(s):  
Kumar Biradha ◽  
Cheng-Yong Su ◽  
Jagadese J. Vittal
Keyword(s):  
Crystal Engineering ◽  
Recent Developments

Supramolecular arrangement and photophysical properties of a dinuclear cyanophenylboronic acid ester

2018 ◽  
Vol 74 (4) ◽  
pp. 452-459 ◽  
Author(s):  
A. Jaquelin Cárdenas-Valenzuela ◽  
Jesús Baldenebro-López ◽  
Jorge A. Guerrero-Álvarez ◽  
Herbert Höpfl ◽  
Daniel Glossman-Mitnik ◽  
...  
Keyword(s):  
Solid State ◽  
Molecular Orbital ◽  
Crystal Engineering ◽  
Density Functional ◽  
Photophysical Properties ◽  
Three Dimensional ◽  
Building Blocks ◽  
Scanning Calorimetry ◽  
Supramolecular Architectures ◽  
Lowest Unoccupied Molecular Orbital

Boronic esters are useful building blocks for crystal engineering and the generation of supramolecular architectures, including macrocycles, cages and polymers (one-, two- and three-dimensional), with potential utility in diverse fields such as separation, storage and luminescent materials. The novel dinuclear cyanophenylboronic ester described herein, namely 4,4′-(2,4,8,10-tetraoxa-3,9-diboraspiro[5.5]undecane-3,9-diyl)dibenzonitrile, C19H16B2N2O4, was prepared by condensation of 4-cyanophenylboronic acid and pentaerythritol and fully characterized by elemental analysis, IR and NMR (1H and 11B) spectroscopy, single-crystal X-ray diffraction analysis and TG-DSC (thermogravimetry–differential scanning calorimetry) studies. In addition, the photophysical properties were examined in solution and in the solid state by UV–Vis and fluorescence spectroscopies. Density functional theory (DFT) calculations with ethanol as solvent reproduced reasonably well the HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) of the title compound. Hirshfeld surface and fingerprint plot analyses are presented to illustrate the supramolecular connectivity in the solid state.

Two new two-dimensional coordination polymers based on isophthalate and a flexibleN-donor ligand containing benzimidazole and pyridine rings: synthesis, crystal structures and a solid-state UV–Vis study

2016 ◽  
Vol 72 (10) ◽  
pp. 724-729 ◽  
Author(s):  
Qi-Meige Hasi ◽  
Yan Fan ◽  
Chen Hou ◽  
Xiao-Qiang Yao ◽  
Jia-Cheng Liu
Keyword(s):  
Hydrogen Bonds ◽  
Coordination Polymers ◽  
Crystal Engineering ◽  
Three Dimensional ◽  
Carboxylate Ligand ◽  
Hydrothermal Conditions ◽  
Donor Ligand ◽  
X Ray ◽  
Supramolecular Architectures ◽  
Carboxylate Groups

In coordination chemistry and crystal engineering, many factors influence the construction of coordination polymers and the final frameworks depend greatly on the organic ligands used.N-Donor ligands with diverse coordination modes and conformations have been employed to assemble metal–organic frameworks. Carboxylic acid ligands can deprotonate completely or partially when bonding to metal ions and can also act as donors or acceptors of hydrogen bonds and are thus good candidates for the construction of supramolecular architectures. Two new transition metal complexes, namely poly[diaqua(μ4-1,4-bis{[1-(pyridin-3-ylmethyl)-1H-benz[d]imidazol-2-yl]methoxy}benzene)bis(μ2-isophthalato)dicobalt(II)], [Co(C8H4O4)(C34H28N6O2)0.5(H2O)]n, (1), and poly[diaqua(μ4-1,4-bis{[1-(pyridin-3-ylmethyl)-1H-benz[d]imidazol-2-yl]methoxy}benzene)bis(μ2-isophthalato)dicadmium(II)], [Cd(C8H4O4)(C34H28N6O2)0.5(H2O)]n, have been constructed using a symmetricN-donor ligand and a carboxylate ligand under hydrothermal conditions. X-ray crystallographic studies reveal that complexes (1) and (2) are isostructural, both of them exhibiting three-dimensional supramolecular architectures built by hydrogen bonds in which the coordinated water molecules serve as donors, while the O atoms of the carboxylate groups act as acceptors. Furthermore, (1) and (2) have been characterized by elemental, IR spectroscopic, powder X-ray diffraction (PXRD) and thermogravimetric analyses. The UV–Vis absorption spectrum of complex (1) has also been investigated.

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