【摘 要】
：
Two novel heteroatom-bridged bis (benzo-12-crown-4 ether)s, i.e. bis [2-nitro-4,5-(1,4,7,10-tetraoxadecamethylene)phenyl] disulfide 1 and diselenide 2, have bee
【机 构】
：
Department of Chemistry
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Two novel heteroatom-bridged bis (benzo-12-crown-4 ether)s, i.e. bis [2-nitro-4,5-(1,4,7,10-tetraoxadecamethylene)phenyl] disulfide 1 and diselenide 2, have been synthesized. X-ray crystallographic structure was obtained for 1. Ion selective electrodes (ISE) for Ag+, containing 1 and 2 in PVC membrane as neutral carriers, were prepared, and their selectivity coefficients for Ag+ (KpolAg,M) were determined against other heavy metal ions, alkali and alkaline-earth metal ions, and ammonium ion. These ISEs showed excellent Ag+ selectivities, log (KpolAg,M) -3.8, against most of the interfering cations examined, except for Hg+.
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