Two-dimensional rare earth coordination polymer sinvolving different coordination modes of thiodiglycolic acid

摘要

Two coordination polymers [La_2(tdga)_3(H_2O)_2]_n (1) and {[Pr_2(tdga)_3(H_2O)_2](centre dot)H_2O}_n (2) were obtained by the reaction between Ln(OH)_3 (Ln = La, Pr) and thiodiglycolic aid (H_2tdga = H_2S(CH_2CO_2)_2), which have a novel double-layered and a single-layered structure, respectively. In the complexes, new coordination modes of the ligand were observed.