Complex formation in dimethyl sulphoxide. Part II. Mercuric iodide and potassium iodide

1967 ◽  
pp. 1964 ◽  
Author(s):  
A. Buckingham ◽  
R. P. H. Gasser
Keyword(s):  
Complex Formation ◽  
Potassium Iodide ◽  
Dimethyl Sulphoxide ◽  
Mercuric Iodide

scholarly journals Metallkomplexe mit 1,4,7-Trithiacyclononan: Kristallstrukturen von [CdI2 · C6H12S3]2 und [Hg(C6H12S3)2](HgI3)2 / Metal Complexes with 1,4,7-Trithiacyclononane: Crystal Structures of [CdI2 · C6H12S3]2 and [Hg(C6H12S3)2](HgI3)2

1993 ◽  
Vol 48 (7) ◽  
pp. 969-972 ◽  
Author(s):  
Joachim Pickardt ◽  
Jing Shen
Keyword(s):  
Aqueous Solutions ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Potassium Iodide ◽  
Cadmium Iodide ◽  
Mercuric Iodide ◽  
Space Group

Crystals of the complexes [CdI2 · C6H12S3]2 (1) and [Hg(C6H12S3)2](HgI3)2 (2) were obtained by diffusion of 1,4,7-trithiacyclononane (9 S 3) in ethanol into aqueous solutions of cadmium iodide and mercuric iodide/potassium iodide, resp. Both compounds crystallize monoclinically,1: space group P21/n, Z = 4, a = 1207.1(5), b = 909.9(2), c = 1240.3(7) pm, β = 92.59(9)°; 2: P21/c, Z = 2, a = 804.7(6), b = 934.0(6), c = 2167.9(4) pm, β = 94.34(7)°. 1 is dimeric, consisting of two [CdI2 · 9S3] units, connected via iodine bridges. Crystals of 2 contain sandwich-like cations [Hg(9S3)2]2+ and [HgI3]- anions, forming chains via Hg ··· S and Hg ··· I bridges.

scholarly journals Spectrophotometric investigations of the reaction between gold(III) and potassium iodide

2000 ◽  
Vol 65 (5-6) ◽  
pp. 345-352 ◽  
Author(s):  
Vesna Vasic ◽  
Suzana Premovic ◽  
Mira Cakar ◽  
Bojan Radak ◽  
Gordana Milovanovic
Keyword(s):  
Complex Formation ◽  
Aqueous Solutions ◽  
Absorption Spectra ◽  
Potassium Iodide ◽  
Equilibrium Constants ◽  
Hydrogen Ion

The equilibria of the complex formation between AuCl4-n(OH)n - and I- was studied spectrophotometrically in aqueous solutions containing KI:Au(III)?2 in the acidity range from 1 M HCl to pH 7 at 25?C. From the hydrogen ion and Cl-ion dependence of the absorption spectra, it was found that AuCl2I2 - and Au(OH)2I2 - complexes were formed. The equilibrium constants of complex formation were determined.

scholarly journals The chemistry of flavines and flavoproteins. Photoreduction of flavines by amino acids

1968 ◽  
Vol 109 (2) ◽  
pp. 259-268 ◽  
Author(s):  
G. R. Penzer ◽  
G. K. Radda
Keyword(s):  
Carbon Dioxide ◽  
Amino Acids ◽  
Light Intensity ◽  
Potassium Iodide ◽  
Aromatic Compounds ◽  
Phenylacetic Acid ◽  
Intramolecular Interaction ◽  
Kinetic Scheme ◽  
Dimethyl Sulphoxide ◽  
Triplet States

1. Flavines are photoreduced through their triplet states by amines and amino acids (e.g. EDTA and dl-phenylglycine). The anaerobic photoreduction of FMN and several other flavines with dl-phenylglycine was analysed in terms of a detailed kinetic scheme. 2. The reaction produces equimolar amounts of benzaldehyde, carbon dioxide and reduced flavine. 3. The sensitivity of the rates to substituents in the dl-phenylglycine can be described by a Hammett ρ-value of −1·1. 4. Phenylacetic acid behaves differently from dl-phenylglycine or benzylamine towards a series of flavines. 5. The photoreductions are quenched by several aromatic compounds. From the effects of light-intensity and temperature, and by comparison with potassium iodide quenching, it is concluded that inhibition by the aromatic compounds is not simply a collisional process. 6. FAD reacts more slowly than FMN both in the photoreduction and in dark reduction by NADH. Urea and dimethyl sulphoxide decrease the intramolecular interaction in FAD, but they have no effect on the rate of dark reduction of FAD compared with FMN. In contrast, the photoreduction of FAD is quicker in urea.

Thermodynamics of complex formation in dimethyl sulphoxide. Silver(I) with quadridentate polyamines

1990 ◽  
Vol 86 (16) ◽  
pp. 2841 ◽  
Author(s):  
Alberto Cassol ◽  
Plinio Di Bernardo ◽  
Pier Luigi Zanonato ◽  
Roberto Portanova ◽  
Marilena Tolazzi ◽  
...  
Keyword(s):  
Complex Formation ◽  
Dimethyl Sulphoxide ◽  
Thermodynamics Of Complex Formation
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