scholarly journals Ionic Liquids with Amino Moieties: Selective and Reversible Extraction/Back-Extraction for Platinum Group Metal Ions from Aqueous Solutions

2017 ◽  
Vol 46 (9) ◽  
pp. 1422-1425 ◽  
Author(s):  
Su Ma ◽  
Kenji Funaki ◽  
Atsushi Miyazaki ◽  
Atsushi Muramatsu ◽  
Kiyoshi Kanie
Keyword(s):  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Platinum Group Metal ◽  
Back Extraction ◽  
Group Metal ◽  
Platinum Group

The Rhodium(III) Complexes of Aspartic and Glutamic Acids

1967 ◽  
Vol 22 (3) ◽  
pp. 268-269 ◽  
Author(s):  
Herschel Frye ◽  
Cecilia Luschak ◽  
Donald Chinn
Keyword(s):  
Amino Acids ◽  
Metal Ions ◽  
Aspartic Acid ◽  
Analytical Data ◽  
Platinum Group Metal ◽  
Acid Complex ◽  
Group Metal ◽  
Alternative Method ◽  
Platinum Group

The chelating tendencies of the alpha amino acids with platinum group metal ions are well known; with the dibasic acids, complexes have been reported involving palladium (II) and platinum (II) with both aspartic and glutamic acids. There is no mention of the successful synthesis of complexes between these acids and rhodium (III), however. This communication reports a method of preparation for these two complexes as well as an alternative method for the synthesis of the palladium (II) complex with aspartic acid. It is shown that the mole ratio of rhodium (III) to aspartate or glutamate is one to three, that the ligands act as bidentates, and that the aspartic acid complex. Infrared and elemental analytical data are given.

Separation of platinum group metal ions by Donnan dialysis

1985 ◽  
Vol 57 (12) ◽  
pp. 2403-2405 ◽  
Author(s):  
Krystyna. Brajter ◽  
Krystyna. Slonawska ◽  
James A. Cox
Keyword(s):  
Metal Ions ◽  
Platinum Group Metal ◽  
Donnan Dialysis ◽  
Group Metal ◽  
Platinum Group

Donnan Dialysis of Bromocomplexes of Some Platinum Group Metal Ions

1989 ◽  
Vol 22 (3) ◽  
pp. 779-790 ◽  
Author(s):  
Krystyna Brajter ◽  
Krystyna Slonawska ◽  
James A. Cox
Keyword(s):  
Metal Ions ◽  
Platinum Group Metal ◽  
Donnan Dialysis ◽  
Group Metal ◽  
Platinum Group

scholarly journals Can Serendipity Still Hold Any Surprises in the Coordination Chemistry of Mixed-Donor Macrocyclic Ligands? The Case Study of Pyridine-Containing 12-Membered Macrocycles and Platinum Group Metal Ions PdII, PtII, and RhIII

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1286
Author(s):  
Alessandra Garau ◽  
Giacomo Picci ◽  
Massimiliano Arca ◽  
Alexander J. Blake ◽  
Claudia Caltagirone ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Metal Ions ◽  
Density Functional ◽  
Mixed Valence ◽  
Platinum Group Metal ◽  
Macrocyclic Ligands ◽  
Octahedral Coordination ◽  
Coordination Environment ◽  
Group Metal ◽  
Platinum Group

This study investigates the coordination chemistry of the tetradentate pyridine-containing 12-membered macrocycles L1-L3 towards Platinum Group metal ions PdII, PtII, and RhIII. The reactions between the chloride salts of these metal ions and the three ligands in MeCN/H2O or MeOH/H2O (1:1 v/v) are shown, and the isolated solid compounds are characterized, where possible, by mass spectroscopy and 1H- and 13C-NMR spectroscopic measurements. Structural characterization of the 1:1 metal-to-ligand complexes [Pd(L1)Cl]2[Pd2Cl6], [Pt(L1)Cl](BF4), [Rh(L1)Cl2](PF6), and [Rh(L3)Cl2](BF4)·MeCN shows the coordinated macrocyclic ligands adopting a folded conformation, and occupying four coordination sites of a distorted square-based pyramidal and octahedral coordination environment for the PdII/PtII, and RhIII complexes, respectively. The remaining coordination site(s) are occupied by chlorido ligands. The reaction of L3 with PtCl2 in MeCN/H2O gave by serendipity the complex [Pt(L3)(m-1,3-MeCONH)PtCl(MeCN)](BF4)2·H2O, in which two metal centers are bridged by an amidate ligand at a Pt1-Pt2 distance of 2.5798(3) Å and feature one square-planar and one octahedral coordination environment. Density Functional Theory (DFT) calculations, which utilize the broken symmetry approach (DFT-BS), indicate a singlet d8-d8 PtII-PtII ground-state nature for this compound, rather than the alleged d9-d7 PtI-PtIII mixed-valence character reported for related dinuclear Pt-complexes.

Minor Groove Site Coordination of Adenine by Platinum Group Metal Ions:  Effects on Basicity, Base Pairing, and Electronic Structure

2003 ◽  
Vol 42 (9) ◽  
pp. 3047-3056 ◽  
Author(s):  
David Amantia ◽  
Clayton Price ◽  
Michelle A. Shipman ◽  
Mark R. J. Elsegood ◽  
William Clegg ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Metal Ions ◽  
Platinum Group Metal ◽  
Minor Groove ◽  
Base Pairing ◽  
Group Metal ◽  
Platinum Group
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