Spectroscopic Data for Crown Ether Reactions with
A potassium crown ether complex with dichloroaurate(I)
... Refinement . Refinement of F 2 against ALL reflections. The weighted R -factor wR and goodness of fit S are based on F 2 , conventional R -factors R are based on F , with F set to zero for negative F 2 . The threshold ...
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Rare earth crown ether complexes: (15 crown 5)tris(nitrato)praseodymium(III)
... Refinement . Refinement on F 2 for ALL reflections except for 1 with very negative F 2 or flagged by the user for potential systematic errors. Weighted R -factors wR and all goodnesses of fit S are based on F 2 , ...
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Computational Evaluation of N,N-Dimethylaminophenyl Methyl Ether and Crown Ether for Metal Selective Sensor Development
... to ether oxygens on a peripheral nitrogen on an aromatic system, both open chain aminoethers and crown ethers having dimethylamino moieties appended to their periphery have been ...collected data for ...
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Assembled Nanoparticle Films with Crown Ether Derivatives as Sensors for Metal Ions
... Previously we have reported that MPCs incorporated into thin films in non-aqueous environments can be used as a potassium specific detection method [13, 14]. The film geometry offers many advantages for the ...
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Recognition of metal cations with surface immobilized crown ether functionalized poly(ferrocenylsilane)
... acylation reactions performed by this procedure were promising as most reactions were completed within 5 or 10 minutes, resulting in yields of 85% and ...higher. Reactions on electron-rich aromatic ...
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Exchange reactions of poly(arylene ether ketone) dithioketals with aliphatic diols: formation and deprotection of poly(arylene ether ketal)s
... 12 It was found that PEEK-1,3-dioxane 7 hydrolyzed rapidly in air simply on redissolving it in CHCl 3 , and so it proved impracticable to obtain GPC or inherent viscosity data for this polymer. The use of ...
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Synthesis and photophysical studies of crown ether-bodipy dyes and the fabrication of bodipy embedded fluorescent nanofibers
... 1.1.8 Crown ether BODIPY dyes There has been comparatively little research on the photophysical effects of attaching crown ether moieties onto BODIPY ...formyl crown ether unit ...
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NMR Spectroscopic Investigations of Catalyzed Reactions. Mechanisms, Kinetics & Unexpected Intermediates
... NMR data of the reaction ...NMR data suggests two different regioisomers, in analogy to the regioisomers observed for the silylation of the DSI catalysts in the previous ...
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Spectral analysis and catalytic activity in the hydrolysis of the phosphate ester by aza crown ether cerium (III) complex
... the reactions were initiated by injecting the desired volume (30 µL) of the substrate (BNPP) stock solution ...The data were obtained from the kinetic curves followed by up 95% or higher conversion of the ...
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Synthesis and evaluation of dibenzo 18 crown 6 ether containing hydrazone derivative as antibacterial drug derivatives
... New derivatives of the macrocyclic polyether dibenzo-18-crown-6 that contain hydrazone groupings in the aromatic rings were synthesized. The biological activity of the polyether ring and the hydrazone groupings ...
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UV-visible Spectroscopic Study on Nitrophenols Ionization Reactions to 225 o C
... Figure 5 provides a graphical comparison of experimental K a with predictions of Marshall and Franck model along the saturation line for water. The fit of the model to the experimental data was well within the ...
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Gas-phase microsolvation of ubiquitin: investigation of crown ether complexation sites using ion mobility-mass spectrometry.
... the low sequence coverage in charge state 5+ hinders a clear identification of every CE-binding site. Ion mobility-mass spectrometry experiments The major focus of this study was to test whether the e ff ect of ...
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A sandwich strand supramolecular complex: aquachloro(nitrilotriacetato κ2N,O)copper(II) 18 crown 6 ether trihydrate
... supporting information sup-2 Acta Cryst. (2006). E62, m804–m806 Refinement . Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based ...
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Removal of Mineral Salts by Heteropoly Acid-Crown ether Adduct for Quick Determination of Trace Amounts of Lithium in Natural Brines
... emission spectroscopic methods. The formation of heteropoly acid-crown ether adduct was used for removing the interfering ions from the brine ...appropriate crown ether was selected to ...
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Nanoscale. An ion-selective crown ether covalently grafted onto chemically exfoliated MoS 2 as a biological fluid sensor PAPER.
... layered nanosheets, in which the Mo atoms are octahedrally (1T) coordinated, abbreviated as chemically exfoliated MoS 2 (ce-MoS 2 ). 12,13 Nevertheless, upon drying or annealing of the ce-MoS 2 exfoliated layers, an ...
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A Comparison between Experimental and Theoretical Spectroscopic Data of Ofloxacin
... Figure 3: The Molecular orbitals of ofloxacin: a) LUMO and b) HOMO According to the calculation, both energies are negative; the difference between them is a gap energy. Depending on the accuracy of the method and the ...
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CdI2 Extraction with 18 Crown 6 Ether into Various Diluents: Classification of Extracted Cd(II) Complex Ions Based on the HSAB Principle
... one (=160). This value was smallest in the V j with j = CdLCl 2 , CdLBr 2 , CdLI 2 , and CdLPic 2 . This is in good agreement with the image that the size of CdL 2+ is smaller than those of CdLA 2 . The same trend as ...
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Probing cations recognized by a crown ether with the 3D-RISM theory. II. 18-crown-6 ether
... In this study, we examined an 18-crown-6 ether in LiCl, KCl, MgCl 2 and CaCl 2 0.1M aqueous solutions. There were earlier contributions concerning a crown ether in water using the ordinary ...
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Crown Ether Schiff bases and Their Complexes: Recent Advances Review
... and crown ether complexes with toughs s-metal ions (Li + , K + , Na + , Ba +2 ) 17,18 ...the crown ether, the unit and sort of donners show in the ligand, variety and helpful impacts of ...
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Analysis of the Possibility of the Crown Ether Structure Modification by the Introduction of Chelate Fragment
... Keywords: Crown ether; Chelate; Structure modification; Sorbent; Complex stability; Cations. INTROdUCTION The polydentate reagents which are able to bind with cations that form various polyhedrons are very ...
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