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A Pyrenyl-Appended Triazole-Based Calix[4]arene as a Fluorescent Sensor for Iodide Ion
Kim, Jong-Seung,Park, Sun-Young,Kim, Sang-Hoon,Thuery, Pierre,Souane, Rachid,Matthews, Susan E.,Vicens, Jacques Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.3
The synthesis and evaluation of a novel calix[4]arene-based fluorescent chemosensor 1 for the detection of I. is described. The fluorescent changes observed upon addition of various anions show that 1 is selective for I. over other anions. Addition of I. results in ratiometric measurements with 1 : 1 complex ratio.
Interaction of copper(II) with N-substituted bis(2-pyridylmethyl)amine derivatives
Kim, M.,Mora, C.,Lee, Y.H.,Clegg, J.K.,Lindoy, L.F.,Min, K.S.,Thuery, P.,Kim, Y. Elsevier 2010 Inorganic chemistry communications Vol.13 No.10
<P>Interaction of copper(II) with the N-substituted bis(2-pyridylmethyl)amine derivatives, (R)-N-1,N-1-bis (pyridine-2-ylmethyl)butane-1,2-diamine (L-1) and (R)-2-(bis(pyridin-2-ylmethyl)amino)butan-1-ol (L-2), has led to isolation of optically active [Cu(L-1)Cl]PF6 (1) and [Cu(L-2)Cl]ClO4 (2), respectively. The X-ray structures of (1) and (2) show that the copper is bound to all four heteroatoms of the respective ligands as well as to a chlorine atom in a distorted square pyramidal arrangement in which the three nitrogens of L-1 or L-2 occupy three positions of each basal plane while the fourth position is occupied by the chloro ligand; apical sites in each case are filled by the amine donor from the NH2-substituted butane arm in L-1 or the (protonated) alcohol oxygen of the 2-aminobutane-1-ol substituent in L-2. To a first approximation the coordination geometry in 2 is distorted square pyramidal; however, the remaining (axial) site on each copper centre is involved in a long contact (2.96 angstrom) with a bound chloro ligand from an adjacent complex which connects individual complex units in a zigzag 1-D polymeric chain, so that the coordination geometry could also be seen as pseudo-octahedral. A temperature-dependent magnetic study revealed the presence of ferromagnetic exchange coupling between copper centres in the chain reflecting the orthogonal structure between the chloro-bridged copper(II) ions; in contrast, and as expected, the discrete complex 1 is magnetically dilute. (C) 2010 Elsevier B.V. All rights reserved.</P>
Some post-Wernerian coordination chemistry
Cho, J.H.,Harrowfield, J.,Kim, J.Y.,Kim, Y.,Lee, Y.H.,Ohto, K.,Thuery, P.,Won, M.S.,Woo, A. Pergamon Press 2013 Polyhedron Vol.52 No.-
The crystal structures of one inert and six labile metal ion complexes have been analysed as a means of illustrating the refinements that X-ray crystallography has brought to the understanding of coordination chemistry so profoundly influenced by Alfred Werner. Contemporary interest in various weak interactions evident from structural studies can be related to the Wernerian concepts of <<haupt→> and <<neben-valenz>>.