Synthesis, electronic and 1H NMR properties of a new type of polypyridyl ligand: Long-range ring current effects

Article abstract of DOI:10.1016/S0040-4020(97)00800-4

The preparation of a series of heterocycles obtained by the condensation of 4,5-diazafluoren-9-one with various amines is described with particular emphasis on bridged systems formed by the condensation of 4,5-diazafluoren-9-one with diamine compounds suc