Ternary complexes in solution. VIII. Complex formation between the copper(II)-2,2'-bipyridyl 1:1 complex and ligands containing oxygen and/or nitrogen donor atoms

1970 ◽  
Vol 9 (5) ◽  
pp. 1238-1243 ◽  
Author(s):  
Rolf Griesser ◽  
Helmut Sigel
Keyword(s):  
Complex Formation ◽  
Ternary Complexes ◽  
Nitrogen Donor

Ternary complexes of N-carboxymethylaminoacetohydroxamic acid

1981 ◽  
Vol 46 (5) ◽  
pp. 1107-1115 ◽  
Author(s):  
Rolf Karlíček ◽  
Miroslav Polášek ◽  
Vladimír Jokl
Keyword(s):  
Complex Formation ◽  
Ternary System ◽  
Binuclear Complex ◽  
Functional Group ◽  
Hydroxamic Acids ◽  
Ternary Complexes ◽  
Hydrogen Ions ◽  
Ligand Structure ◽  
Excess Copper

The formation of N-carboxymethylaminoacetohydroxamic acid complexes in solutions with excess copper(II) or iron(III) ions or both of them was studied. In the presence of Cu(II), the binuclear complex Cu2H-1L+ was identified; in the ternary system, the complex CuFeH-1L+ was found. This complex formation is necessarily associated with the ligand structure >N-CH2.CO-NHOH and with a new property of hydroxamic acids of this type - detachment of two hydrogen ions from one carbohydroxamic functional group.

scholarly journals A Potentiometric Studies of Ternary Complexes of Co(II), Ni(II), Cu(II) and Zn(II) with Ethylenediaamine-N,N,N1,N1-Tetraacetic Acid and Melonic Acid

2018 ◽  
Vol 34 (6) ◽  
pp. 2782-2788
Author(s):  
Sapna Tomar ◽  
Padma Sikarwar
Keyword(s):  
Free Energy ◽  
Ionic Strength ◽  
Complex Formation ◽  
Ternary Complexes ◽  
Potentiometric Studies ◽  
Tetraacetic Acid ◽  
Complex Formation Equilibria ◽  
Formation Equilibria ◽  
Gibb’S Free Energy ◽  
Made In

Potentiometeric investigation on the complex formation equilibria involving Co(II), Ni(II), Cu(II) & Zn(II) with ethylenediaamine-N,N,N1,N1-tetraacetic acid and melonic acid have been made in solution at three different temps viz. (150, 350, 450C). Important thermodynamic parameters namely, change in Gibb’s free energy (DG0), change in enthalpy (DH0) and change in entropy (DS0) and stability constant have been determined potentiometrically at ionic strength of 0.1 M (KNO3).

scholarly journals Binding characteristics of pro-insulin-like growth factor-II from cancer patients: binary and ternary complex formation with IGF binding proteins-1 to -6

2000 ◽  
Vol 165 (2) ◽  
pp. 253-260 ◽  
Author(s):  
JJ Bond ◽  
S Meka ◽  
RC Baxter
Keyword(s):  
Complex Formation ◽  
Ternary Complex ◽  
Binding Proteins ◽  
Ternary Complexes ◽  
Binary Complex ◽  
Igf Binding Proteins ◽  
Ternary Complex Formation ◽  
Binary Complexes ◽  
Igf Binding ◽  
Igfbp 3

Many tumours secrete IGF-II in incompletely processed precursor forms. The ability of these pro-IGF-II forms to complex with the six IGF binding proteins (IGFBPs) is poorly understood. In this study, pro-IGF-II has been extracted from the serum and tumour tissue of two patients with non-islet cell tumour hypoglycaemia. These samples were used to study binary complex formation with IGFBPs-1 to -6 using competitive IGF-II binding assays and ternary complex formation with IGFBP-3 and IGFBP-5. In each case, IGFBPs-1 to -6 showed little difference in their ability to form binary complexes with recombinant IGF-II or tumour-derived pro-IGF-II forms, when the preparations were standardised according to IGF-II immunoreactivity. As previously described, ternary complex formation by acid-labile subunit (ALS) with IGFBP-3 and pro-IGF-II was greatly decreased compared with complex formation with mature IGF-II. In contrast, ALS bound similarly to IGFBP-5 in the presence of pro-IGF-II and mature IGF-II. These studies suggest that pro-IGF-II preferentially forms binary complexes with IGFBPs, and ternary complexes with IGFBP-5, rather than ternary complexes with IGFBP-3 as seen predominantly in normal serum. This may increase the tissue availability of serum pro-IGF-II, allowing its insulin-like potential to be realised.

Ternary complexes in solution: Complex formation between copper(II), zinc(II), cadmium(II) and ligands of biological importance

1984 ◽  
Vol 115 (6-7) ◽  
pp. 731-738 ◽  
Author(s):  
K. Kumar ◽  
D. Ram Prasad ◽  
P. C. Nigam
Keyword(s):  
Complex Formation ◽  
Ternary Complexes ◽  
Biological Importance

Metal-Controlled Stereoselectivity in Complex Formation: Assembly of Tetranuclear Copper(I) Complexes with Four Stereogenic Nitrogen Donor Functions in all-(R) and all-(S) Configurations

2003 ◽  
Vol 2003 (9) ◽  
pp. 1727-1734 ◽  
Author(s):  
Jörg Schneider ◽  
Martin Köckerling ◽  
Rodion Kopitzky ◽  
Gerald Henkel
Keyword(s):  
Complex Formation ◽  
Nitrogen Donor
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