ChemInform Abstract: THERMODYNAMICS OF METAL COMPLEX FORMATION IN AQUEOUS SOLUTION. XIII. ENTHALPY Y MEASUREMENTS ON COPPER(I) AND SILVER(I) HALIDE SYSTEMS

1978 ◽  
Vol 9 (8) ◽  
Author(s):  
S. AHRLAND ◽  
B. TAGESSON ◽  
D. TUHTAR
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Metal Complex

1,8-Naphthyridine Modified Rhodamine B Derivatives: Turn-On Colorimetric Sensor for Cu2+

2014 ◽  
Vol 881-883 ◽  
pp. 1079-1082 ◽  
Author(s):  
Gao Zhang Gou ◽  
He Ping Yan ◽  
Shi Juan Xu ◽  
Na Wu ◽  
Bo Zhou ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Metal Complex ◽  
Rhodamine B ◽  
Ring Opening ◽  
High Selectivity ◽  
Colour Change ◽  
Detection Mechanism ◽  
Biologically Relevant ◽  
Turn On

A 1,8-naphthyridine modified rhodamine B derivative, one Cu2+-selective chemosensors was designed, synthesized and characterized, which display a high selectivity for Cu2+among environmentally and biologically relevant metal ions. It can detect Cu2+in aqueous solution selectively with a dramatic colour change from colorless to magenta. The detection mechanism involves a ring-opening process as a consequence of metal complex formation. Jobs plots study indicated that the chemosensor chelated Cu2+with 2:1 stoichiometry.

scholarly journals A Solution Study of Complex Formation of Some Diamines with Lanthanones

2009 ◽  
Vol 6 (1) ◽  
pp. 270-272 ◽  
Author(s):  
J. J. Vora ◽  
D. R. Patel ◽  
Asha D. Patel ◽  
Kanu Patel ◽  
Sangita Sharma ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Complex Formation ◽  
Metal Complex ◽  
Steric Effect ◽  
Ring Size ◽  
Titration Method ◽  
The Stability ◽  
Diamine Ligands ◽  
Metal Ligand

To study the metal ligand equilibrium in aqueous solution, the well known Irving-Rossotti titration method was used. The temperature selected is 30±0.10C at ionic strength 0.2 M (NaClO4) which was maintained constant through out the work. The binary metal complex (ML2) formation was studied. The metals selected are Sm3+, Gd3+, Dy3+and Yb3+. The diamine ligands taken are ethylenediamine, 1,2 diamino propane, 1,3 diamino propane,N-Ndiethyl ethylenediamine andN-N -dimethyl ethylenediamine. Factors that affected the stability of the complexes are size and ionic potential of lanthanone ions, basicity of ligands, ring size and steric effect of ligands.

scholarly journals Thermodynamics of Metal Complex Formation in Aqueous Solution. II. A Calorimetric Study of Fluoride Complexes of Hydrogen, Uranium(VI), and Vanadium(IV).

1971 ◽  
Vol 25 ◽  
pp. 3471-3483 ◽  
Author(s):  
Sten Ahrland ◽  
Lennart Kullberg ◽  
Chr. Rømming ◽  
Sigfrid Svensson ◽  
J. Koskikallio ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Metal Complex ◽  
Calorimetric Study ◽  
Fluoride Complexes
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