An emission study of the interaction between dihydrogen phosphate and a series of ruthenium polypyridyl complexes containing the anion receptor 4,4'-bis[(2-methoxyethyl)carbamoyl]-2,2'-bipyridine is reported. An increase of the emission intensity and lifetime are observed in the range 0-2.5 molar equivalents of H 2 PO 4 -. The effect of the addition of trace amounts of water is also examined.Graphical Abstract. the emission increases upon addition of the first 2.5 equivalents of dihydrogen phosphate, however, further increases lead to a decrease in both emission intensity and lifetime. The effect of the addition of trace amounts of water is also examined.
A novel class of anion receptors with with C-H•••X- hydrogen bonding is introduced and demonstrated for Cl-, Br-, NO3- and HSO4- recognition. Cyclic voltammetry revealed that novel ferrocenylimidazolium salts, syntheses of which are briefly described, selectively complex and electrochemically recognise guest anions. Futhermore, proton NMR spectroscopy indicated the formation of 1:2 stoichiometric complexes with Cl-, Br- and I- and 1:1 stoichiometric complexes with NO3- and HSO4-.
Key indicatorsSingle-crystal X-ray study T = 297 K Mean '(C±C) = 0.004 A Ê R factor = 0.041 wR factor = 0.105 Data-to-parameter ratio = 18.5For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
2000 organo-iron compounds organo-iron compounds S 7100 35 -165 1,3-Di(ferrocenylmethyl)imidazolium and 1-Ferrocenylmethyl-3alkylimidazolium Salts: A High Yield and Facile Synthesis. -New rapid and facile syntheses of the title systems such as (III), (V), (IX), and (X) are developed. -(HOWARTH, J.; THOMAS, J.-L.; HANLON, K.; MCGUIRK, D.; Synth. Commun. 30 (2000) 10, 1865-1878; Sch. Chem. Sci., Dublin City Univ., Dublin 9, Ire.; EN)
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