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Kim, Jong Seung; Rim, Jeong Ah; Shon, Ok Jae; Noh, Kwan Ho; Kim, Eun Hee; Cheong, Chaejoon; Vicens, Jacques

doi:10.1023/a:1020479801919

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…Substituents on nitrogen, such as the picolyl groups in 36c and 36d, appear to participate in Ag(I) complexation while a benzyl group (36b) does not [100]. When a fluorescent moiety, pyrene, was attached to the nitrogen atom, "molecular Taekwondo" processes, where one metal binds in a cavity and thus causes displacement of another metal bound in the other, were easily monitored, via fluorescence change, between Ag + -K + , Cu 2+ -K + and Ag + -Cs + pairs [71].…”

Section: Type (D) -Doubly-bridged 13-alternate Calix[4]arenesmentioning

confidence: 99%

1,3-Alternate, the Smart Conformation of Calix[4]arenes

Baklouti¹,

Harrowfield²,

Pulpoka³

et al. 2006

MROC

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Section: Type (D) -Doubly-bridged 13-alternate Calix[4]arenesmentioning

confidence: 99%

1,3-Alternate, the Smart Conformation of Calix[4]arenes

Baklouti¹,

Harrowfield²,

Pulpoka³

et al. 2006

MROC

Self Cite

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“…The binding properties of the ligands play critical roles in the ability to target specific metals of interest, and thus there are many strategies for designing compounds with the appropriate selectivity, such as for silver, a metal that has numerous practical uses. Several ongoing studies are investigating the complexation properties of silver with ligands containing nitrogen, sulfur and oxygen heteroatoms, such as heterocyclic amines, 17,18 calixarene derivatives and other macrocycles, [19][20][21][22][23][24] thiolates, 25 and unsaturated polymers. 26 Also, new ligands are being developed for aqueous extraction 27 of silver and for speciation and removal of silver from natural waters.…”

Section: Introductionmentioning

confidence: 99%

Complexation of silver and co-recovered metals with novel aza-crown ether macrocycles by electrospray ionization mass spectrometry

Williams

Brodbelt

Huang

et al. 2003

Analyst

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Electrospray ionization mass spectrometry (ESI-MS) is used to evaluate the metal binding selectivities of an array of novel caged macrocycles for silver, gold, copper, nickel, zinc, iron, lead, manganese and alkali metal ions. It is found that five of the new compounds display silver selectivity, and their relative affinities for various metals depend on the type, number, and arrangement of heteroatoms (N, O), the cavity size, and the presence of aromatic substituents. Alkali metal cation binding studies are used to evaluate the size-selectivities of the cavities of the macrocycles. Electronic structure calculation by B3LYP density function theory methods were used to model the metal complexes. The presence of nitrogen atoms in the macrocyclic ring is essential for silver selectivity over other transition metals and alkali metal ions, and the presence of aromatic groups also enhances silver avidity. Macrocycle 3, a triaza-18-crown-6 analog modified with two phenyl groups and a cage group, is capable of selective extraction of Ag+ from aqueous solutions in the presence of other transition metal ions and the most common alkali and alkaline earth metal ions.

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A Competitive Molecular Recognition Study: Syntheses and Analysis of Supramolecular Assemblies of 3,5‐Dihydroxybenzoic Acid and Its Bromo Derivative with Some N‐Donor Compounds

Varughese¹,

Pedireddi²

2006

Chemistry A European J

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A molecular recognition study of 3,5-dihydroxybenzoic acid (1) and its bromo derivative 4-bromo-3,5-dihydroxybenzoic acid (2) with the N-donor compounds 1,2-bis(4-pyridyl)ethene (bpyee), 1,2-bis(4-pyridyl)ethane (bpyea), and 4,4'-bipyridine (bpy) is reported. Thus, the syntheses and structural analysis of molecular adducts 1 a-1 c (1 with bpyee, bpyea, and bpy, respectively) and 2 a-2 c (2 with bpyee, bpyea, and bpy, respectively) are discussed. In all these adducts, recognition between the constituents is established through either O--H...N and/or O--H...N/C--H...O pairwise hydrogen bonds. In all the adducts both OH and COOH functional groups available on 1 and 2 interact with the N-donor compounds, except in 2 a, in which only COOH (COO-) is involved in the recognition process. The COOH moieties in 1 a, 1 b, and 2 b form only single O--H...N hydrogen bonds, whereas in 1 c and 2 c, they form pairwise O--H...N/C--H...O hydrogen bonds. In addition, subtle differences in the recognition patterns resulted in the formation of cyclic networks of different dimensions. In fact, only 1 c forms a four-molecule cyclic moiety, as was already documented in the literature for this kind of assemblies. All complexes have been characterized by single-crystal X-ray diffraction. The supramolecular architectures are quite elegant and simple, with stacking of sheets in all adducts, but a rather complex network with a threefold interpenetration pattern was found in 2 c.

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Untitled

Cited by 7 publications

References 7 publications

1,3-Alternate, the Smart Conformation of Calix[4]arenes

1,3-Alternate, the Smart Conformation of Calix[4]arenes

Complexation of silver and co-recovered metals with novel aza-crown ether macrocycles by electrospray ionization mass spectrometry

A Competitive Molecular Recognition Study: Syntheses and Analysis of Supramolecular Assemblies of 3,5‐Dihydroxybenzoic Acid and Its Bromo Derivative with Some N‐Donor Compounds

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