Complex formation equilibria between copper(II) and Pyridine-2-carbaldehyde

1971 ◽  
Vol 24 (1) ◽  
pp. 65 ◽  
Author(s):  
RW Green ◽  
MJ Rogerson
Keyword(s):  
Complex Formation ◽  
Complete System ◽  
Neutral Molecule ◽  
Anionic Form ◽  
Mixed Complex ◽  
Complex Formation Equilibria ◽  
Formation Equilibria ◽  
Protonated Species ◽  
Conjugate Base

Copper(II) complexes of pyridine-2-carbaldehyde can be derived either from the neutral molecule (A) or from the anionic form (AOH-) of the hydrate, so that there are two sets of complexes, CuAn2+ and Cu(AOH)n2-n (n = 1, 2), related to each other as acid to conjugate base. There is also a mixed complex, CuA(AOH)+. In solution, several species are always present together in equilibrium, with the de- protonated species beginning to predominate above pH 5. The complete system of equilibria at 25� has been worked out and the constants have been evaluated by a combination of spectrophotometry and pH titrations.

Complex formation equilibria between astatine(I) and sulphur-containing chelating ligands

Polyhedron ◽  
1991 ◽  
Vol 10 (1) ◽  
pp. 11-17 ◽  
Author(s):  
R. Ludwig ◽  
S. Fischer ◽  
R. Dreyer ◽  
R. Jacobi ◽  
J. Beger
Keyword(s):  
Complex Formation ◽  
Chelating Ligands ◽  
Complex Formation Equilibria ◽  
Formation Equilibria

Complex formation equilibria in the binary Zn2+–oxalate and In3+–oxalate systems

2003 ◽  
pp. 2698-2703 ◽  
Author(s):  
Ermanno Vasca ◽  
Diego Ferri ◽  
Carla Manfredi ◽  
Loredana Torello ◽  
Cecilia Fontanella ◽  
...  
Keyword(s):  
Complex Formation ◽  
Complex Formation Equilibria ◽  
Formation Equilibria

Complex formation equilibria in iron(III)-L-alanine system

1993 ◽  
Vol 18 (5) ◽  
pp. 457-461 ◽  
Author(s):  
Predrag Djurdjević ◽  
Ratomir Jelić
Keyword(s):  
Complex Formation ◽  
Complex Formation Equilibria ◽  
Formation Equilibria

Complex formation equilibria of polyamine ligands with copper(II) and zinc(II)

2019 ◽  
Vol 194 ◽  
pp. 26-33 ◽  
Author(s):  
Valeria M. Nurchi ◽  
Guido Crisponi ◽  
Gavino Sanna ◽  
Inmaculada Pérez-Toro ◽  
Juan Niclos-Gutierrez ◽  
...  
Keyword(s):  
Complex Formation ◽  
Complex Formation Equilibria ◽  
Formation Equilibria

Equilibrium Studies of Alkyltin(IV) Complexes with D-Glucosamine

1997 ◽  
Vol 62 (7) ◽  
pp. 1023-1028 ◽  
Author(s):  
Mohamed M. Shoukry ◽  
Samir M. El-Medani
Keyword(s):  
Complex Formation ◽  
Stability Constants ◽  
Acid Base ◽  
Complex Formation Equilibria ◽  
Equilibrium Studies ◽  
Formation Equilibria ◽  
Effects Of Temperature ◽  
The Stability

The acid-base and complex-formation equilibria involving glucosamine and its complexes with alkyltin(IV) chlorides have been studied by potentiometric technique. The results prove to a formation of 1 : 1 complex with trialkyltin(IV) and both 1 : 1 and 1 : 2 complexes with dialkyltin(IV) species. The stability constants in water were determined, the effects of temperature (from 15 to 35 °C) and ethanol (up to 88 vol.%) was studied and the speciation of the complexes was resolved.

Aminobisphosphonates based on cyclohexane backbone as coordinating agents for metal ions. Thermodynamic, spectroscopic and biological studies

2018 ◽  
Vol 42 (10) ◽  
pp. 7723-7736 ◽  
Author(s):  
J. Gałęzowska ◽  
H. Czapor-Irzabek ◽  
E. Chmielewska ◽  
P. Kafarski ◽  
T. Janek
Keyword(s):  
Complex Formation ◽  
Metal Ions ◽  
Complex Formation Equilibria ◽  
Biological Studies ◽  
Speciation Study ◽  
Calcium Magnesium ◽  
Formation Equilibria

Complex formation equilibria of calcium, magnesium, copper and nickel with amino-bisphosphonic ligands are described, together with a speciation study along with calorimetric outcome and cytotoxicity characteristics.

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