Analytical Sciences

Abstract − Analytical Sciences, 16(3), 303 (2000).

Anion Selectivities of Dibutyltin Dihalides as NeutralCarriers for Ion-Selective Electrodes
Takayo MORIUCHI-KAWAKAMI, Hiroshi AOTO, Naotake TAKEDA, Keiichi FUJIMORI, and Yasuhiko SHIBUTANI
Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, Omiya, Asahi, Osaka 535-8585, Japan
Di-n-butyltin dihalides (Bu2SnY2, Y=Cl, I, OMe) behaved as neutral carriers for anion-selective electrodes. A variety ofselectivity patterns have been obtained by using Bu2SnY2 which differ in the electronegative substituents Y on the Snatom. However, all electrodes containing Bu2SnY2 provided the highest degree of selectivity for the SCN- ion. Theinteraction of Bu2SnY2 with the SCN- ion was studied in the organic solution by means of 13C NMR spectroscopy. In thecase of the addition of NaSCN, a significant increase of the value of 1J(119Sn-13Ca) was observed in the 2.0 M CDCl3solution of Bu2SnCl2.