Coordination Complexes of Indium and 2,2',2'-Terpyridyl and of Indium and 5-Nitro-1,10-phenanthrolin

1951 ◽  
Vol 4 (4) ◽  
pp. 651
Author(s):  
GJ Sutton
Keyword(s):  
Aqueous Solution ◽  
Coordination Complexes ◽  
Soluble Salt

Indium ions react with 2,2?,2"-terpyridyl in dilute alcohol or in aqueous solution forming bisterpyridyl indium salts, of which the chloride, bromide, iodide, and thiocyanate are insoluble. As thiocyanate, one part of indium per lo5 may be detected. Metals such as zinc, tin, and iron, with which indium is usually associated, interfere with the reaction. With 5-nitro-1,lO-phenanthroline, indium forms insoluble tris-(5-nitro-1,10-phenanthroline) indium salts as chloride, bromide, iodide, and thiocyanate. The reactions are of little value since the least soluble salt, the iodide, is 0.04 per cent. soluble.

scholarly journals Controlling the Reduction of Chelated Uranyl to Stable Tetravalent Uranium Coordination Complexes in Aqueous Solution

2020 ◽  
Author(s):  
Korey P. Carter ◽  
Kurt F. Smith ◽  
Toni Tratnjek ◽  
Gauthier J.-P. Deblonde ◽  
Liane M. Moreau ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Coordination Complexes ◽  
Tetravalent Uranium

scholarly journals Stability Constants of Mixed Ligand Complexes of Nickel(II) with Adenine and Some Amino Acids

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Naciye Türkel
Keyword(s):  
Aqueous Solution ◽  
Amino Acids ◽  
Ternary Complex ◽  
Coordination Complexes ◽  
Ternary Complexes ◽  
Mixed Ligand ◽  
Relative Stabilities ◽  
Binary And Ternary Complexes ◽  
Binary Complexes ◽  
Essential Trace Elements

Nickel is one of the essential trace elements found in biological systems. It is mostly found in nickel-based enzymes as an essential cofactor. It forms coordination complexes with amino acids within enzymes. Nickel is also present in nucleic acids, though its function in DNA or RNA is still not clearly understood. In this study, complex formation tendencies of Ni(II) with adenine and certain L-amino acids such as aspartic acid, glutamic acid, asparagine, leucine, phenylalanine, and tryptophan were investigated in an aqueous medium. Potentiometric equilibrium measurements showed that both binary and ternary complexes of Ni(II) form with adenine and the above-mentioned L-amino acids. Ternary complexes of Ni(II)-adenine-L-amino acids are formed by stepwise mechanisms. Relative stabilities of the ternary complexes are compared with those of the corresponding binary complexes in terms ofΔlog10⁡K,log10⁡X, and % RS values. It was shown that the most stable ternary complex is Ni(II):Ade:L-Asn while the weakest one is Ni(II):Ade:L-Phe in aqueous solution used in this research. In addition, results of this research clearly show that various binary and ternary type Ni(II) complexes are formed in different concentrations as a function of pH in aqueous solution.

Coordination complexes of Mn(II), Co(II), Ni(II), Zn(II) and Cd(II) with histaminol – Crystal structures and formation constants in aqueous solution

Polyhedron ◽  
2020 ◽  
Vol 178 ◽  
pp. 114328 ◽  
Author(s):  
Piotr Maślewski ◽  
Dariusz Wyrzykowski ◽  
Weronika Kentner ◽  
Anna Ciborska ◽  
Anna Dołęga
Keyword(s):  
Aqueous Solution ◽  
Crystal Structures ◽  
Formation Constants ◽  
Coordination Complexes

Generation of radicals in the charge-transfer photochemistry of coordination complexes of colbalt(III) in aqueous solution

1974 ◽  
Vol 78 (7) ◽  
pp. 686-691 ◽  
Author(s):  
Deborah D. Campano ◽  
Evan R. Kantrowitz ◽  
Morton Z. Hoffman ◽  
Marc S. Weinberg
Keyword(s):  
Aqueous Solution ◽  
Charge Transfer ◽  
Coordination Complexes

scholarly journals Ternary Coordination Complexes between Glycine, Copper (II), and Glycine Peptides in Aqueous Solution

1971 ◽  
Vol 246 (19) ◽  
pp. 5944-5951 ◽  
Author(s):  
René-Paul Martin ◽  
Lucienne Mosoni ◽  
Bibudhendra Sarkar
Keyword(s):  
Aqueous Solution ◽  
Coordination Complexes ◽  
Glycine Peptides

Anion recognition in aqueous solution by cyclic dinuclear square cage-shaped coordination complexes

2019 ◽  
Vol 495 ◽  
pp. 118961
Author(s):  
Cai-Ye Fu ◽  
Yu-Qian Li ◽  
Lu Chen ◽  
Yun-Guang Wang ◽  
Li-Rong Lin
Keyword(s):  
Aqueous Solution ◽  
Anion Recognition ◽  
Coordination Complexes

scholarly journals Direct Electrochemical Synthesis of Nickel (II) Thiolates and their Coordination Complexes.

2015 ◽  
Vol 11 (9) ◽  
pp. 3973-3978
Author(s):  
Baljit Singh ◽  
Shavina Shavina
Keyword(s):  
Aqueous Solution ◽  
Solid State ◽  
Coordination Compounds ◽  
Supporting Electrolyte ◽  
Coordination Complexes ◽  
Solution Phase ◽  
Metal Anode ◽  
Physical Measurements ◽  
Infrared Spectral ◽  
Tetrabutylammonium Chloride

Metallo organic compounds can be synthesized electrochemically by anodic generation of metal cations by using sacrificial metal anode. Bis-thiolates complexes of Nickel, Ni(SR)2 have been prepared in an H-type cell by electrochemical oxidation of thiols RSH (ethanethiol, 2-propanethiol, 1-butanethiol, 1-pentanethiol and thiophenol) with sacrificial Nickel (Ni) anode and inert Platinum (Pt) cathode in non-aqueous solution of acetonitrile containing tetrabutylammonium chloride  (as supporting electrolyte). On refluxing   with ligand (L)  2,2'-bipyridyl, these thiolates do not form coordination compounds. However, their adducts Ni(SR)2.L have been synthesized electrochemically by adding the ligand to above thiols in solution phase. All these synthesized complexes have been characterized by elemental analysis, infrared spectral data and other physical measurements. All these compounds are in the solid state with excellent yield and associated with high electrochemical efficiency.

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