Citation: Karmakar, Anirban; Goldberg, Israel (2011). Coordination polymers of flexible tetracarboxylic acids with metal ions. I. Synthesis of CH2- and (CH2)2-spaced bis(oxy)isophthalic acid ligands, and structural characterization of their polymeric adducts with lanthanoid ions. CrystEngComm, 13, pp. 339-.