Fluoride-ion-mediated 1H/2D exchange in anion receptors: A 19F NMR probe

Guchhait, Tapas; Panda, Lipsita; Rout, Sushree Prajna; Giri, Monalisa

doi:10.1016/j.molstruc.2023.135280

Cited by 5 publications

(1 citation statement)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Separation or isolation of large radii anions from water such as phosphate requires other suitable materials that are unavailable. Amide compounds have been commonly used as anion receptors either in discrete molecules or coordination polymers, due to the presence of the amide NH binding group [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectroscopic Evaluations and UV-Vis Titration Studies of New Symmetrical Amide Compounds Derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic Acid Methyl Ester

Abdul Kadir,

Haris,

Mohamed Zuki

et al. 2024

Trends Sci

View full text Add to dashboard Cite

In this study, 2 flexible and pre-organized tetraamide compounds derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic acid methyl ester namely 1,2-bis[N,N’-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]pentane (L1) and 1,2-bis[N,N’-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]hexane (L2) have been successfully synthesized when reacted with diamines in 1:2 ratio. These new compounds were built from combination of 3 main components, as a trend requires for anion receptor which are (i) 2,6-pyridine dicarboxamide moieties as targeted anion binding host, (ii) amino methyl pyridine pendants arms as the flexible moieties and (iii) pentyl (-C5H10-) and hexyl (-C6H12-) unit as the spacer. Compounds L1-L2 were fully characterized by using elemental analyzer, Fourier transform infrared (FTIR) spectroscopy, gas chromatography-mass spectroscopy (GC-MS), 1H, 2D NOESY and 13C Nuclear Magnetic Resonance (NMR) spectroscopies, and Ultraviolet-visible (UV-Vis) spectroscopies. In this study, anion titration methods were used to identify the affinity towards selected anions. The results showed that L1 (having a pentyl spacer) had the highest affinity towards phosphate anions as compared to L2, where the red shift changes were observed in the UV-vis spectrum at the amide region. HIGHLIGHTS Two novel amide compounds with flexible and pre-organized structure are designed for use as potential anion receptors The flexible moieties at the amide and the linker allow hydrogen bonding interaction of the molecules with variety anions with different geometries Anion titration studies revealed good affinities towards phosphate anions as suggested in Hofmeister trend GRAPHICAL ABSTRACT

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectroscopic Evaluations and UV-Vis Titration Studies of New Symmetrical Amide Compounds Derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic Acid Methyl Ester

Abdul Kadir,

Haris,

Mohamed Zuki

et al. 2024

Trends Sci

View full text Add to dashboard Cite

show abstract

A Synopsis on CO₂ Capture by Synthetic Hydrogen Bonding Receptors

Giri,

Guchhait

2024

ChemPlusChem

View full text Add to dashboard Cite

Carbon dioxide (CO2) is one of the most abundant greenhouse gases in Earth’s atmosphere and responsible for global warming. Therefore, aerial CO2 capture and sequestration has become a major task for human community. Though several adsorbents for CO2 including activated carbon, zeolites, metal‐organic frameworks (MOFs), and other surface‐modified porous materials are well developed, the supramolecular approaches using synthetic hydrogen‐bonding receptors are less explored. This review article highlights the synthetic development of various artificial receptors and their properties toward fixation of aerial CO2 as carbonate (CO32−), bicarbonate (HCO3−), or carbamate (−NHCOO−/>NCOO−) ions, induced by excess fluoride (F−) or hydroxide (OH−) ions as their tetrabutylammonium salts. The utilization of encapsulated carbonate/bicarbonate/carbamate complexes in anion exchange metathesis for separation of oxyanions from aqueous solutions are also discussed. In addition, the release of CO2 and regeneration of receptor molecules are described in a number of occasions. Most importantly, the formation of anion complexes as crystalline materials in solid‐state is described in terms of supramolecular chemistry and correlated with their solution‐state properties. Finally, the types of receptors containing various functional groups are scrutinized in CO2 uptake, storage, and release processes and hints of endeavours for future research are delineated.

show abstract

Iminoboronate-based chiral dynamic covalent polymer for selective and sensitive fluoride recognition

Wang,

Hong,

et al. 2024

European Polymer Journal

View full text Add to dashboard Cite

Fluoride-ion-mediated 1H/2D exchange in anion receptors: A 19F NMR probe

Cited by 5 publications

References 63 publications

Synthesis, Spectroscopic Evaluations and UV-Vis Titration Studies of New Symmetrical Amide Compounds Derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic Acid Methyl Ester

Synthesis, Spectroscopic Evaluations and UV-Vis Titration Studies of New Symmetrical Amide Compounds Derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic Acid Methyl Ester

A Synopsis on CO₂ Capture by Synthetic Hydrogen Bonding Receptors

Iminoboronate-based chiral dynamic covalent polymer for selective and sensitive fluoride recognition

Contact Info

Product

Resources

About

Fluoride-ion-mediated 1H/2D exchange in anion receptors: A 19F NMR probe

Cited by 5 publications

References 63 publications

Synthesis, Spectroscopic Evaluations and UV-Vis Titration Studies of New Symmetrical Amide Compounds Derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic Acid Methyl Ester

Synthesis, Spectroscopic Evaluations and UV-Vis Titration Studies of New Symmetrical Amide Compounds Derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic Acid Methyl Ester

A Synopsis on CO2 Capture by Synthetic Hydrogen Bonding Receptors

Iminoboronate-based chiral dynamic covalent polymer for selective and sensitive fluoride recognition

Contact Info

Product

Resources

About

A Synopsis on CO₂ Capture by Synthetic Hydrogen Bonding Receptors