Crystal structure and sonochemical nanosized synthesizing of diaquo-bis-(pyrazine-2-carboxylato) copper (II) complex: Sensing and photocatalytic activity

Dawood

Marie

2021

Preprint

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Single crystals of AgSCN supramolecular coordination polymer, SCP1 and the nanosized particles of AgSCN, 2, are synthesized by self-assembly and ultrasonic radiation methods, respectively. The structure comprises of the simple AgSCN molecule fabricated by a tetrahedral Ag atom and one thiocyanate group. The SCN ligand connects four Ag atoms via µ3-S and one nitrogen atom. Two silver atoms and two sulfur atoms form rhombic mini-cycle (Ag2S2) motif exhibiting argentophilic interaction. The structure of SCP1 extends three-dimensionally via coordinate bonds creating different fused polygons. The chemical structure and morphology of nanosized 2 are characterized by powder X-ray diffraction and transmission electron microscopy (TEM) and spectroscopic methods. The heterogeneous catalytic and photo-catalytic activity of nanosized 2 exhibit very efficient catalytic activity towards degradation of Acid Blue-92 and Eosin-Y dyes within very short times under UV-light or ultrasonic radiation. The good limit of detection and the high quenching efficiency of SCP1 towards selective quantitative determination of nitrobenzene (NB) and Fe3+ ions support its behavior as an efficient luminescent sensor.

“…The •OH radicals oxidize the IC dye converting them to degradation products, CO2 and H2O, Eqs. (6,7).…”

Section: Active Species and Mechanism Of The Catalytic And Photo-catalytic Processesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Crystal Structure of AgSCN Coordination Polymers for Sensing of Iron (III) Ions, Nitrobenzene and Photocatalytic Activity Under Ultrasonic Irradiation

Dawood

Marie

2021

Preprint

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“…[ 25,26 ] On the other hand, coordination complexes may extend their structures via supramolecular binding forces like π–π stacking and hydrogen bonding interactions exhibiting wide applications in many different areas. [ 27–35 ] The use of mixed ligands such as pyridyl‐containing linkers (4,4 \ ‐bipyridine) and dicarboxylate or tricarboxylate derivatives allows construction of building variety of supramolecular structures with different topologies and versatile functionality. [ 36,37 ] However, low‐dimensional coordination networks are formed with some transition metals utilizing mixed ligand systems where the weaker ligand remains as counter ion or an extra framework entity.…”

Section: Introductionmentioning

confidence: 99%

Host‐guest nanosized coordination complexes based on Ag‐isonicotinic acid‐H₂O and Ni‐4,4′‐bipyridine‐aminobenzic acid‐H₂O as potentially active anticancer and antimicrobial agents

El‐din

Marie

et al. 2021

Applied Organom Chemis

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Nano‐scaled coordination complexes (CC) exhibiting the structures [Ag (INH)2].OH.H2O (CC1), [Ni(4,4′‐bpy)(H2O)4](4‐aba)2.4H2O (CC2), (INH = isonicotinic acid, 4,4′‐bpy = 4,4′‐bipyridine, 4‐aba = aminobenzoate) were prepared via self‐assembly and sono‐chemical methods at ambient conditions. The structures were fully studied by single‐crystal XRD and analytical investigations. Water molecules and the hydroxyl ions act as guests connecting the discrete molecules in complex 1, whereas in 2 the coordinate water molecules form the 1D chains of [Ni(4,4′‐bpy)(H2O)4] which are H‐bonded to the guest H2O molecules and aminobenzoate anions. The structures of CC 1 and 2 are stabilized into 3D‐supramolecular topology through H bonds and π–π stacking interactions. The nanosized tested compounds 1\ and 2\ are designed to investigate their action on viability and proliferation of five human cancer cell lines. In addition, ABTS assay and rate erythrocyte hemolysis were used to test the antioxidant activity of the nanosized 1\ and 2\. Also, the coordination complexes 1\ and 2\ exhibit good antimicrobial activity keeping them as promising drug candidates for the treatment of bacterial and fungal infections.

“…The most interesting research areas in coordination chemistry is the design of multi-dimensional supramolecular coordination polymers (SCPs) which nd wide applications in many different areas such as of catalysis, photocatalysis, sensors, luminescence and medicinal chemistry [1][2][3][4][5][6][7][8]. Also, one of the [16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Effect of structural variability and flexibility of aliphatic diamines on self-assembly of host-guest coordination polymers constructed of copper cyanide networks: Structure study and catalytic activity

Abdou

2021

Preprint

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A new 3D-host-guest supramolecular coordination polymer (SCP); ∞3[(Cu3(CN)3)2.(DAHP)], 1 [1,7-diaminoheptane=.(DAHP)] had been synthesized by self-assembly at ambient conditions. X-ray single crystal diffraction of SCP 1 indicated the formation of two-fold [Cu3(CN)3]2 units containing tetrahedral copper(I) atoms which are arranged in unique way to create 3D-network. The neutral [Cu3(CN)3]2 building blocks create unique complex structure containing the minicycle [Cu2(μ3-CN)2] motif with wide cavities enable to capsulate the long chain DAHP as guest molecule. The topology of 1 had been studied by elemental analysis, IR-spectra and thermogravimetric analyses. The topology of 1 had been compared with the prototype SCP containing different aliphatic diamines which indicated the effect of structural variability and flexibility of aliphatic diamines on the network structure of these SCP. The catalytic and photo-catalytic activity of 1 was studied for mineralization of methylene blue (MB) utilizing H2O2 as an oxidant.