简介:Themetalcomplexesofpolyazacryptandhaveattractedmuchattentionowingtotheirspecialstructure,unusualphoto-chemical,electricalandcatalyticproperties.Recently,LehnandNelsonsynthesizedsuccessivelyaseriesofcryptandsandcrypatateswithhighyieldby(2+3)schiff-basecondensationoftris(2-aminoethyl)amineandaryldialdehyde.Butsofar,littleworkabouttheanalogueswithlargercavitiesandflexiblechainscondensedbytris(3-aminopropyl)amine(abbr.