Synthesis and crystal structure of a new phenoxy oxygen bridged binuclear cadmium(II) polyaza cryptate

Xu, Xin-You; Chen, Jianling; Luo, Qiong; Shen, Meng-Chang; Huang, Xiaofeng; Quiangjin, Wu

doi:10.1016/0277-5387(96)00279-3

Cited by 14 publications

(3 citation statements)

References 10 publications

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“…The coordination angles observed with the Zn 2+ core provides a better fit if it were to be considered as a trigonal bipyramidal with one trigonal center being vacant, where the trans-angle, viz., N1−Zn−N2, is found to be 162°. The Cd−O and Cd−N distances were found to be in the range 2.229−2.445 and 2.323−2.377 Å, respectively, the distances which were commonly found in the literature . The coordination angles observed with the Cd 2+ core provide a better fit if it were to be considered as a seven-coordinated capped octahedral structure with one vacant site.…”

Section: Resultsmentioning

confidence: 54%

Lower Rim 1,3-Diderivative of Calix[4]arene-Appended Salicylidene Imine (H₂L): Experimental and Computational Studies of the Selective Recognition of H₂L toward Zn²⁺ and Sensing Phosphate and Amino Acid by [ZnL]

2010

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A new 1,3-diderivative of calix[4]arene appended with hydroxymethyl salicylyl imine has been synthesized and its ion recognition toward biologically relevant M(n+) ions studied. The receptor H(2)L showed selectivity toward Zn(2+) by switch-on fluorescence among the 12 metal ions studied with a detection limit of 192 ppb. The interaction of Zn(2+) with H(2)L has been further supported by absorption studies, and the stoichiometry of the complex formed (1:1) has been established on the basis of absorption and ESI MS. Competitive ion titrations carried out reveal that the Zn(2+) can be detected even in the presence of other metal ions of bioimportance. The mode of interaction of Zn(2+) with conjugate has been established by a fleet of computational calculations carried out in a cascade manner, either on the ligand or on the complex, wherein the final optimizations were carried out by the density functional theory (DFT) and found that the Zn(2+) and Cd(2+) indeed bind differently. In situ prepared [ZnL] complex responds to both inorganic phosphate as well as AMP, ADP, and ATP with a minimum detection limit of 426 ppb wherein the Zn(2+) from the complex is detached and recomplexed by the added phosphate moiety. It has been possible to build an INHIBIT logic gate for the conjugate using Zn(2+) and HPO(4)(2-) as inputs by monitoring the fluorescence emission band at 444 nm as output. The amino acid sensing abilities of [ZnL] have been explored by fluorescence and absorbance spectroscopy where it showed selectivity toward Cys, Asp, and His through the formation of the Zn(2+) complex of these amino acids by chelating through their side chain moieties. Thus, while H(2)L is selective for Zn(2+) among a number of cations, the [ZnL] is selective toward phosphate among a number of anions and also toward Asp, Cys, and His among the naturally occurring amino acids.

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Section: Resultsmentioning

confidence: 54%

Lower Rim 1,3-Diderivative of Calix[4]arene-Appended Salicylidene Imine (H₂L): Experimental and Computational Studies of the Selective Recognition of H₂L toward Zn²⁺ and Sensing Phosphate and Amino Acid by [ZnL]

2010

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“…The Cd–O bonds have distances and angles in the range expected for this bonding (Supporting Information Table S2). , The ligand, 5-CFIA 3– , connects with four Cd centers (Supporting Information Figure S10d).…”

Section: Resultsmentioning

confidence: 99%

Highly Selective MOF-Based Turn-Off Luminescence Detection of Hg²⁺ Ions in an Aqueous Medium and Its Dual Functional Catalytic Activity toward Aldol Condensation and β-Enamination Reactions

Manna

Natarajan

2022

Inorg. Chem.

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A new organic ligand, 5-(carboxyformamido)isophthalic acid (5-CFIA), was prepared and employed for the synthesis of two compounds [M3(C10H4O7N1)2(8H2O)]·H2O (M = Cd, Mn). The compounds have three-dimensionally extended structures. Both the compounds were found to be luminescent at room temperature. The luminescence nature was exploited for the detection of Hg2+ ions in an aqueous medium with good selectivity. The interactions between Hg2+ ions and the compounds quench the luminescence intensity and act as a turn-off sensor. Both the compounds exhibited low limits for the detection of Hg2+ ions and in the range mandated by the WHO. The interactions between Hg2+ ions and the compound involve the −NH group, which was probed using Raman and IR spectroscopic techniques. These studies provide important pointers toward the mechanism of this turn-off luminescence behavior. The compounds were explored for base-catalyzed aldol condensation and Lewis acid-promoted β-enaminoester formation reactions. The aldol condensation reaction uses the −NH functionality as a base. The studies indicate that the electron-withdrawing group produces products with higher yields. The β-enaminoester reaction uses the Lewis acid centers, and the studies reveal that the electron-withdrawing groups produce lesser yields of the products. The catalytic nature of the reaction and recyclability of the catalysts were also established. The catalytic reactions employ ethanol (aldol condensation) and no solvent (β-enaminoester), which suggests that the reactions are green and environmentally friendly. The Mn compound was observed to be anti-ferromagnetic.

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“…Research on organic polyamines is currently of great interest because of their potential applications as useful organic ligands, in which the amine N atoms have strong coordination ability to transition metal ions (Xu et al, 1997). N,N,N 0 ,N 0 -Tetrakis(3-aminopropyl)ethylenediamines have been extensively studied (Mikuriya et al, 1985;Micheloni et al, 1986), but few new unsymmetric organic polyamine N,N,N 0 -tris(3aminopropyl)ethylenediamines and their complexes have been reported.…”

Section: Commentmentioning

confidence: 99%

[N,N,N′-Tris(3-aminopropyl)ethylenediamine-κ⁵ N]nickel bis(perchlorate)

Wang

et al. 2006

Acta Cryst E

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The asymmetric unit of the title complex, [Ni(C11H29N5)](ClO4)2, consists of an [Ni(C11H29N5)]2+ cation and two uncoordinated perchlorate anions. The NiII atom is five-coordinated in a slightly distorted square-pyramidal geometry, with four of the N atoms forming the basal plane and the fifth N atom in the apical position. The complex shows a three-dimensional network structure assembled by intermolecular hydrogen bonds.

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Synthesis and crystal structure of a new phenoxy oxygen bridged binuclear cadmium(II) polyaza cryptate

Cited by 14 publications

References 10 publications

Lower Rim 1,3-Diderivative of Calix[4]arene-Appended Salicylidene Imine (H₂L): Experimental and Computational Studies of the Selective Recognition of H₂L toward Zn²⁺ and Sensing Phosphate and Amino Acid by [ZnL]

Lower Rim 1,3-Diderivative of Calix[4]arene-Appended Salicylidene Imine (H₂L): Experimental and Computational Studies of the Selective Recognition of H₂L toward Zn²⁺ and Sensing Phosphate and Amino Acid by [ZnL]

Highly Selective MOF-Based Turn-Off Luminescence Detection of Hg²⁺ Ions in an Aqueous Medium and Its Dual Functional Catalytic Activity toward Aldol Condensation and β-Enamination Reactions

[N,N,N′-Tris(3-aminopropyl)ethylenediamine-κ⁵ N]nickel bis(perchlorate)

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Synthesis and crystal structure of a new phenoxy oxygen bridged binuclear cadmium(II) polyaza cryptate

Cited by 14 publications

References 10 publications

Lower Rim 1,3-Diderivative of Calix[4]arene-Appended Salicylidene Imine (H2L): Experimental and Computational Studies of the Selective Recognition of H2L toward Zn2+ and Sensing Phosphate and Amino Acid by [ZnL]

Lower Rim 1,3-Diderivative of Calix[4]arene-Appended Salicylidene Imine (H2L): Experimental and Computational Studies of the Selective Recognition of H2L toward Zn2+ and Sensing Phosphate and Amino Acid by [ZnL]

Highly Selective MOF-Based Turn-Off Luminescence Detection of Hg2+ Ions in an Aqueous Medium and Its Dual Functional Catalytic Activity toward Aldol Condensation and β-Enamination Reactions

[N,N,N′-Tris(3-aminopropyl)ethylenediamine-κ5 N]nickel bis(perchlorate)

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Lower Rim 1,3-Diderivative of Calix[4]arene-Appended Salicylidene Imine (H₂L): Experimental and Computational Studies of the Selective Recognition of H₂L toward Zn²⁺ and Sensing Phosphate and Amino Acid by [ZnL]

Lower Rim 1,3-Diderivative of Calix[4]arene-Appended Salicylidene Imine (H₂L): Experimental and Computational Studies of the Selective Recognition of H₂L toward Zn²⁺ and Sensing Phosphate and Amino Acid by [ZnL]

Highly Selective MOF-Based Turn-Off Luminescence Detection of Hg²⁺ Ions in an Aqueous Medium and Its Dual Functional Catalytic Activity toward Aldol Condensation and β-Enamination Reactions

[N,N,N′-Tris(3-aminopropyl)ethylenediamine-κ⁵ N]nickel bis(perchlorate)