SYNTHESES OF TETRAAZABIS(TROPOCORONAND)S CONTAINING HYDROXY GROUP(S) AND CONFORMATIONAL ANALYSIS OF THEIR NICKEL(2) COMPLEXES IN SOLUTION

摘要

The stepwise syntheses of one symmetric and three asymmetric tetraazabis(tropocoronand)s (12a-12d) having two linker chains,with or without a hydroxy group,of the same or different length are reported.The coordination styles of their nickel(2) complexes (13a-13d) in solution have also been discussed based on their ~1H NMR and UV-VIS.spectral data.