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Multiorganyltin Compounds. Designing a novel phosphate‐selective carrier
Author(s) -
Tsagatakis John K.,
Chaniotakis Nikolas A.,
Jurkschat Klaus
Publication year - 1994
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19940770812
Subject(s) - chemistry , phosphate , combinatorial chemistry , organic chemistry
A series of distannyl derivatives, 1–9 , were studied for their application as phosphate‐selective carriers in polymer‐based liquid membranes. A drastically different potentiometric behavior was observed depending on the distance between the tin(IV) coordinating centers and the ligands attached to them. Some of the compounds examined, i.e. (PhSnBr 2 ) 2 CH 2 ( 1 ) and (Me 3 SiCH 2 SnCl 2 CH 2 ) 2 ( 3 ) showed very high potentiometric selectivity towards phosphate over other lipophilic anions such as perchlorate and thiocyanate. Results indicate that ( 1 ) the optimal number of CH 2 groups between the Sn‐centers are either one or three, ( 2 ) the electron‐withdrawing power of the organic ligands attached to Sn‐centers strongly influences the overall response towards phosphate, and ( 3 ) the steric effect of the organic substituents is important in the potentiometric selectivity observed.