A modular approach to porphyrin oligomers using metal ions as connectorsElectronic supplementary information (ESI) available: preparation and spectroscopic data for compounds 4 and 6. Crystallographic data for the bis-palladium complex shown in Scheme 1. See http://www.rsc.org/suppdata/cc/b1/b109357f/

2002 ◽  
pp. 266-267 ◽  
Author(s):  
S. Richeter ◽  
C. Jeandon ◽  
R. Ruppert ◽  
H. J. Callot
Keyword(s):  
Metal Ions ◽  
Spectroscopic Data ◽  
Palladium Complex ◽  
Crystallographic Data ◽  
Supplementary Information ◽  
Modular Approach

scholarly journals Comparative Extraction of Aluminum Group Metals Using Acetic Acid Derivatives with Three Different-Sized Frameworks for Coordination

Separations ◽  
2021 ◽  
Vol 8 (11) ◽  
pp. 211
Author(s):  
Keisuke Ohto ◽  
Nako Fuchiwaki ◽  
Hiroaki Furugou ◽  
Shintaro Morisada ◽  
Hidetaka Kawakita ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Metal Ions ◽  
Spectroscopic Data ◽  
Equilibrium Constants ◽  
Structural Effects ◽  
Extraction Equilibrium ◽  
Ph Values ◽  
Slope Analysis ◽  
Coordination Sites ◽  
Extraction Properties

We prepared acetic acid derivatives using three different frameworks, calix[4]arene, alkenyltrimethylol, and trihydroxytriphenylmethane, which differ in the number and size of their coordination sites. We further investigated the extraction properties for aluminum group metal ions. All three extraction reagents exhibited increased extraction compared with the corresponding monomeric compounds, owing to structural effects. The extraction reaction and extraction equilibrium constants were determined using a slope analysis. Their extraction abilities, separation efficiencies, and potential coordination modes are discussed using the extraction equilibrium constants, half-pH values, and spectroscopic data. The calix[4]arene and trihydroxytriphenylmethane derivatives demonstrated allosteric co-extraction of indium ions (In3+) with an unexpected stoichiometry of 1:2.

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