Ming-hwa Yang , Tzu-Wei Lin , Chin-Cheng Chou , Hsiao-Ching Lee , Hsiao-Chi Chang , Gene-Hsiang Lee , Man-kit Leung and Shie-Ming Peng
Three novel oligo-α-pyridylamino ligands, tripyridyldi-amine (H2tpda), tetrapyridyltriamine (H3teptra), pentapyridyltetramine (H4peptea) are synthesized; the crystal structures of their metal complexes with the all-anti configuration of the chelating ligands are reported.