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Two new coordination polymers (CPs), [InCl(H 2 bidc) 2 (H 2 O)] n ( 1 ) and [Sc(Hbidc)(OH)(H 2 O)] n ( 2 ) (H 3 bidc = benzimidazole-5,6-dicarboxylic acid) were synthesized through a solvothermal approach. 1 exhibits a 1D infinite chain, which further constructs a 3D supramolecular framework via hydrogen bonds. 2 features a 3D supramolecular framework consisting of left- and right-handed chiral layers, which contain the left- and right-handed chiral spiral chains. The adjacent layers stack through π–π stacking interactions between benzene and imidazole rings. 1 exhibits excellent catalytic reactivity for the Strecker reaction and can be recycled four consecutive reactions with more than 95% conversion yields. [ABSTRACT FROM AUTHOR]