(C2H5)3N in toluene byproducts: (C2H5)3N*HCl; toluene soln. of p-NO2C6H4SbCl2 added dropwise over 2 h to toluene soln. of (HSCH2CH2)2O and Et3N at room temp. with stirring under dry Ar, stirred for many hours; Et3N*HCl sepd., cooled to -20°C, left standing overnight, sucked off, further crop of product crystd. from mother liquor by concn. with rotary evaporator, recrystd. from toluene; elem. anal.;