Liu et al. present the FT-IR and PXRD data of the lanthanide complexes constructed by 4-iodo-3-methylbenzoic acid (IMBA) and 4,7-dimethyl-1,10-phenanthroline (DMP). The single crystal structures of [Ln2(IMBA)6(dmp)2] (Ln=Eu3+, 1a; Ln=Gd3+, 1b; Ln=Tb3+, 1c) are isostructural. They crystallize in triclinic space group P-1 (no. 2). These complexes are dinuclear cluster structures which contain two lanthanide ions (Ln3+, Ln1 and Ln2), six deprotonated IMBA and two dmp, forming an electroneutral unit. In these complexes, IMBA has two coordination modes: bridge and chelation[1].
