Coordination polymers based on divergent terpyridine ligands

This work describes the design and synthesis of 4,2’:6’,4’’-terpyridine ligands and their use in
coordination polymers with various metal salts. In that goal, a series of novel mono-
4,2’:6’,4’’-terpyridines bearing aryl substituents on the 4’ position was prepared. Then, a
series of back-to-back 4,2’:6’,4’’-terpyridines, which is a new class of compounds, connected
through the same 4’ positions with various rigid spacers were synthesized. First, their
synthesis, NMR, UV-VIS, fluorescence and most importantly single crystal X-ray structures
are presented and compared. The next section describes the reactions of the mono-
4,2’:6’,4’’-terpyridines with metal acetates (mainly Zn(II)), which yielded various onedimensional
coordination polymers. Afterwards the reactions of the same ligands with
various Zn(II) halides to produce mostly metalloxexacycles are discussed. Also, a number of
host-guest attempts are presented. In the last section, the reactions of the back-to-back
4,2’:6’,4’’-terpyridines with various Zn(II) halides, which resulted in the formation of 2D nets,
are displayed and the effect of the spacers was considered.