Selective high capacity adsorption of Congo red, luminescence and antibacterial assessment of two new cadmium(II) coordination polymers

Beheshti, Azizolla; Nozarian, Kimia; Ghamari, Narges; Mayer, Péter; Motamedi, Hossein

doi:10.1016/j.jssc.2017.11.035

Cited by 21 publications

(8 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to the methylene- and ethylene-bridged ligands 608 and 609 , bis(imidazolin-2-thione) ligands with longer alkandiyl units (CH 2 ) x ( x = 3, 4, 5, 6) were also prepared and used for the complexation of transition metals. Their reaction with group 11 and 12 metals afforded almost exclusively coordination polymers, which were studied in particular for their antibacterial activity. − In 2014, Jin used the 1,3-propandiyl ( x = 3) system together with several arene-bridged ligands for the synthesis of binuclear rhodium(III) and iridium(III) complexes 623 , which were obtained from the reactions of the sulfur ligands with [(η 5 -C 5 Me 5 )MCl 2 ] 2 (M = Rh, Ir) in the presence of silver(I) triflate, nitrate, or tetrafluoroborate (Scheme ). The molecular structure of one representative is shown in Figure .…”

Section: N-heterocyclic Carbene Adducts Of Group 16 Elementsmentioning

confidence: 99%

N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry

2019

View full text Add to dashboard Cite

N-Heterocyclic carbenes (NHC) are nowadays ubiquitous and indispensable in many research fields, and it is not possible to imagine modern transition metal and main group element chemistry without the plethora of available NHCs with tailor-made electronic and steric properties. While their suitability to act as strong ligands toward transition metals has led to numerous applications of NHC complexes in homogeneous catalysis, their strong σ-donating and adaptable π-accepting abilities have also contributed to an impressive vitalization of main group chemistry with the isolation and characterization of NHC adducts of almost any element. Formally, NHC coordination to Lewis acids affords a transfer of nucleophilicity from the carbene carbon atom to the attached exocyclic moiety, and low-valent and lowcoordinate adducts of the p-block elements with available lone pairs and/or polarized carbon-element π-bonds are able to act themselves as Lewis basic donor ligands toward transition metals. Accordingly, the availability of a large number of novel NHC adducts has not only produced new varieties of already existing ligand classes but has also allowed establishment of numerous complexes with unusual and often unprecedented element−metal bonds. This review aims at summarizing this development comprehensively and covers the usage of N-heterocyclic carbene adducts of the p-block elements as ligands in transition metal chemistry.

show abstract

Section: N-heterocyclic Carbene Adducts Of Group 16 Elementsmentioning

confidence: 99%

N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry

2019

View full text Add to dashboard Cite

show abstract

“…Researchers are focusing on the applications of clay minerals attributed to their low-cost, abundant outputs, non-toxicity, stability, and ability of ion exchange. In this regard, several clay minerals such as bentonite (Beheshti et al, 2018;Mat et al, 2018), montmorillonite (Mahmoudian et al, 2018), zeolite (Abdelrahman, 2018), and kaolin have been reported for the removal of dyes from wastewater. Among these, bentonite had received greater attention as adsorbent due to its high adsorption capacity and cost-effective nature.…”

Section: Introductionmentioning

confidence: 99%

Citric Acid Modified Bentonite for Congo Red Adsorption

et al. 2019

View full text Add to dashboard Cite

Raw bentonite (RB) was chemically modified by citric acid (CA) to obtain a low-cost and environment-friendly citric acid incorporated bentonite (CAB) adsorbent, which was applied for the adsorptive removal of Congo Red (CR). The effect of adsorbent dosage, contact time, ionic strength, surfactant, and pH on adsorption was investigated. Adsorption equilibrium data fitted well with Langmuir model while the Langmuir adsorption capacity of CR on CAB reached up to 384 mg•g −1. Furthermore, CR adsorption on CAB followed pseudo-second kinetic model while intra-particle diffusion was not the only rate-limiting step as determined from intra-particle diffusion model investigation. RB and CAB were characterized by XRD, FT-IR, and BET techniques. A proposed mechanism for the adsorption of CR over CAB suggested the chemical adsorption phenomenon is mainly controlled by chelation, hydrogen bonding, and fixing.

show abstract

“…Unlike metal substitution, the spacer length and flexibility of the ligands have a high impact on the topology of these polymers, so by exchange bbit with L s in {[M 2 (bbit) 3 Cl 2 ][MCl 4 ]} n , its framework changed from a cationic 2D honeycomb network to a 1D polymeric chain in structures of 1 and 2 . The self-assembly of CdCl 2 , KSCN, and bbit ligands creates a 1D U-shaped chain structure of [Cd(NCS)(bbit)Cl] n , in which cadmium adopts a distorted tetrahedral geometry . In contrast to [Cd(NCS)(bbit)Cl] n , in polymer 3 which is a 2D sheet framework with 3.5% porosity (calculated by Platon software), the metal center has a distorted trigonal bipyramidal geometry with a CdS 3 N 2 core structure.…”

Section: Resultsmentioning

confidence: 99%

“…Iodine Capture Performance in Cyclohexane Solution. Owing to the high capacity, excellent structural stability, and good performance of d 10 transition metals with flexible sulfur donor ligands in dye adsorption, 62,69 we have encouraged to consider their high potential for the adsorption of iodine as an another type of environmental pollutant, which threatens human health. In the current study, we have probed the ability of the considered polymers on the removal of iodine from the cyclohexane solution.…”

Section: Structural Comparison Between Group 12 Transition Metal Coor...mentioning

confidence: 99%

Synthesis, Crystal Structures, H₂S, and Iodine Uptake Properties of Four New Coordination Polymers Constructed from Group 12 Transition Metal Ions and a Bidentate Sulfur Donor Ligand

Beheshti

Bahrani‐Pour

Sedaghat

et al. 2022

Crystal Growth & Design

Self Cite

View full text Add to dashboard Cite

In the current work, we have managed to design and synthesize a set of four new sulfur coordination polymers, namely, [ZnCl2(Ls)2] n (1), [CdCl2(Ls)2] n (2), [Cd(NCS)(μ2-SCN)2(Ls)2] n (3), and {[Hg(μ2-Cl)(Ls)2][ClO4]} n (4) using a branch tube method. They have been fully characterized using several techniques including elemental analysis, Fourier transform infrared spectroscopy, powder X-ray diffraction, photoluminescence spectroscopy, UV–vis, and single-crystal X-ray diffraction. Polymer 1 was synthesized directly by the reaction of zinc ions with the Ls ligand, while polymer 2, which is isostructural with 1, was synthesized by a single-crystal-to-single-crystal postsynthetic modification of polymer 1 where Zn(II) ions were substituted by Cd(II) ions. The effect of the anion on changing the topology has been carried out in polymer 3 using a thiocyanate anion in which SCN– groups were bonded to the metal centers in both terminal and bridging coordination fashions to form a two-dimensional network structure. The competition between halogen and uncoordinated perchlorate anions along with the Ls ligand constructed a cationic one-dimensional network structure in {[Hg(μ2-Cl)(Ls)2][ClO4]} n in which halogen atoms bridged between the metal centers and perchlorates counterbalanced the charge. The title polymers were considered as iodine and H2S adsorbents, and their kinetics were studied in detail. All polymers showed extreme stability toward both pollutants, and polymer 4 removed more than 99% of I2 from the solution. The presence of halogen and ClO4 – anions in polymer 4 was the key factor for its best removal efficiency in this group.

show abstract

Selective high capacity adsorption of Congo red, luminescence and antibacterial assessment of two new cadmium(II) coordination polymers

Cited by 21 publications

References 49 publications

N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry

N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry

Citric Acid Modified Bentonite for Congo Red Adsorption

Synthesis, Crystal Structures, H₂S, and Iodine Uptake Properties of Four New Coordination Polymers Constructed from Group 12 Transition Metal Ions and a Bidentate Sulfur Donor Ligand

Contact Info

Product

Resources

About

Selective high capacity adsorption of Congo red, luminescence and antibacterial assessment of two new cadmium(II) coordination polymers

Cited by 21 publications

References 49 publications

N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry

N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry

Citric Acid Modified Bentonite for Congo Red Adsorption

Synthesis, Crystal Structures, H2S, and Iodine Uptake Properties of Four New Coordination Polymers Constructed from Group 12 Transition Metal Ions and a Bidentate Sulfur Donor Ligand

Contact Info

Product

Resources

About

Synthesis, Crystal Structures, H₂S, and Iodine Uptake Properties of Four New Coordination Polymers Constructed from Group 12 Transition Metal Ions and a Bidentate Sulfur Donor Ligand