9 Be and 31 P NMR analyses on the influence of imino groups on Be2+ complex stabilities of a series of cyclo-μ -imido triphosphate anions

2013 ◽  
Vol 52 (3) ◽  
pp. 69-81 ◽  
Author(s):  
Hideshi Maki ◽  
Masahiko Tsujito ◽  
Hiroyuki Nariai ◽  
Minoru Mizuhata
Keyword(s):  
Complex Stabilities

COMPLEXES OF STANNIC IODIDE WITH AROMATIC HYDROCARBONS

1965 ◽  
Vol 43 (5) ◽  
pp. 1272-1278 ◽  
Author(s):  
J. F. Murphy ◽  
D. E. Baker
Keyword(s):  
Carbon Tetrachloride ◽  
Complex Formation ◽  
Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbons ◽  
Extinction Coefficient ◽  
Regular Solutions ◽  
Benzene Toluene ◽  
Yield Values ◽  
Complex Stabilities ◽  
Iodide Complex

Spectrophotometric measurements on solutions of stannic iodide were found to provide evidence for complex formation with aromatic hydrocarbons. Calculations, based on spectra for mixed solutions of benzene and stannic iodide in carbon tetrachloride, yield values of 0.26 for the equilibrium constant (mole fraction), 28 400 1/mole cm for the molar extinction coefficient of the benzene – stannic iodide complex. Kinetic evidence indicates that the order of decreasing complex stabilities is from xylene to toluene to benzene. The formation of stannic iodide – aromatic hydrocarbon complexes provides an explanation for the discrepancy between measured solubilities of stannic iodide in benzene, toluene, and xylene, and the solubilities predicted by the Hildebrand theory of regular solutions.

scholarly journals Metal Ion-Binding Properties of the Diphosphate Ester Analogue, Methylphosphonylphosphate, in Aqueous Solution

1999 ◽  
Vol 6 (6) ◽  
pp. 321-328 ◽  
Author(s):  
Bin Song ◽  
Jing Zhao ◽  
Fridrich Gregáň ◽  
Nadja Prónayová ◽  
S. Ali A. Sajadi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Minor Role ◽  
Ion Binding ◽  
Metal Ion Binding ◽  
Ph Titration ◽  
Role Based ◽  
The Stability ◽  
A Minor ◽  
Complex Stabilities

The stability constants of the 1:1 complexes formed between methylphosphonylphosphate (MePP3-), CH3P(O)2--O-PO32- , and Mg2+, Ca2+, Sr2+, Ba2+, Mn2+, Co2+, Ni2+, Cu2+, Zn2+,​ or Cd2+ (M2+) were determined by potentiometric pH titration in aqueous solution (25 C° ; l = 0.1 M, NaNO3 ). Monoprotonated M(H;MePP) complexes play only a minor role. Based on previously established correlations for M2+ -diphosphate monoester complex-stabilities and diphosphate monoester β-group. basicities, it is shown that the M(Mepp)- complexes for Mg2+ and the ions of the second half of the 3d series, including Zn2+ and Cd2+, are on average by about 0.15 log unit more stable than is expected based on the basicity of the terminal phosphate group in MePP3-. In contrast, Ba(Mepp)- and Sr(Mepp)- are slightly less stable, whereas the stability for Ca(Mepp)- is as expected, based on the mentioned correlation. The indicated increased stabilities are explained by an increased basicity of the phosphonyl group compared to that of a phosphoryl one. For the complexes of the alkaline earth ions, especially for Ba2+, it is suggested that outersphere complexation occurs to some extent. However, overall the M(Mepp)- complexes behave rather as expected for a diphosphate monoester ligand.

Comparative Assessment of Complex Stabilities of Radiocopper Chelating Agents by a Combination of Complex Challenge and in vivo Experiments

ChemMedChem ◽  
2015 ◽  
Vol 10 (7) ◽  
pp. 1200-1208 ◽  
Author(s):  
Shanna Litau ◽  
Uwe Seibold ◽  
Alicia Vall-Sagarra ◽  
Gert Fricker ◽  
Björn Wängler ◽  
...  
Keyword(s):  
Chelating Agents ◽  
Comparative Assessment ◽  
In Vivo Experiments ◽  
Complex Stabilities

scholarly journals Hox Homeodomain Proteins Exhibit Selective Complex Stabilities with Pbx and DNA

1996 ◽  
Vol 24 (5) ◽  
pp. 898-906 ◽  
Author(s):  
W.-F. Shen ◽  
C.-P. Chang ◽  
S. Rozenfeld ◽  
G. Sauvageau ◽  
R. K. Humphries ◽  
...  
Keyword(s):  
Homeodomain Proteins ◽  
Complex Stabilities

Self-Assembling Ternary Complex Stabilities and Template Ratios in Carceplex Formation

1997 ◽  
Vol 119 (18) ◽  
pp. 4321-4322 ◽  
Author(s):  
Kensuke Nakamura ◽  
Chimin Sheu ◽  
Amy E. Keating ◽  
K. N. Houk ◽  
John C. Sherman ◽  
...  
Keyword(s):  
Ternary Complex ◽  
Self Assembling ◽  
Complex Stabilities
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