Six novel coordination polymers (CPs) based on a rigid tridentate ligand, 4 & PRIME;-(4-(imidazol-1-yl)phenyl)-4,2 & PRIME;:6 & PRIME;,4 & PRIME;'-terpyridine (imphtpy), namely {[Zn2(imphtpy)2(p-bdc)2].(H2O)}n (1), [Zn(imphtpy)(m-bdc)]n (2), {[Zn (imphtpy)(qda)1.5].(H2O)}n (3), [Cd2(imphtpy)2(m-bdc)2]n (4), [Cd(imphtpy)(abtc)0.5]n (5) and [Cd(imphtpy) (qda)]n (6), (p-H2bdc = 1,4-benzenedicarboxylic acid, m-H2bdc = 1,3-benzenedicarboxylic acid, H2qda = hy-droquinone-o,o'-diacetic acid and H4abtc = 3,3 & PRIME;,5,5 & PRIME;-azobenzenetetracarboxylic acid), have been solvothermally synthesized an...