SEARCH Articles Figures Tables 2,2 -Bithiazoles 2,5 -Bithiazole 2,5 -Bithiazole 2- aminoethyl-2 ,4-bithiazole-4’carboxylic acid 2-aminoethyl-2 ,4-bithiazole 4,4 -Bithiazole metal complexes Bithiazole moiety Bithiazole) (PENBTE)