Anion-controlled structural diversity in cadmium coordination polymers of 3-aminobenzonitrile.

• Anion-controlled structural diversity in cadmium coordination polymers. • Using 3-aminobenzonitrile ligand and different anions, three structurally different CPs were synthesized. • Size and coordination ability of anions have key role in structural diverssity. • Hirshfeld surface analysis was performed to investigate the intermolecular interactions. Using 3-aminobenzonitrile (3-ABN) as a ligand and different anions, three cadmium coordination polymers of the formulae [Cd(3-ABN)I 2 ] n (1), [Cd(3-ABN)Br 2 ] n (2), {[Cd(3-ABN) 2 (H 2 O) 2 ](ClO 4) 2 } n (3), were synthesized and characterized by FT-IR, PXRD, TGA as well as single-crystal X-ray analysis. Our results show that by changing the anions, different structural motifs were formed in compounds 1–3. Structural analysis shows that the 3-ABN ligand in all compounds plays the role of a bridge between cadmium centers. Compound 1 is a 1D double chain structural motif while compounds 2 and 3 form different 2D coordination polymers. Hirshfeld surface analysis was performed to investigate the intermolecular interactions in compounds 1–3. Using 3-aminobenzonitrile (3-ABN) and different anions, three coordination polymers of the formulas [Cd(3-ABN)I 2 ] n (1), [Cd(3-ABN)Br 2 ] n (2) and {[Cd(3-ABN) 2 (H 2 O) 2 ](ClO 4) 2 } n (3) were synthesized and characterized by FT-IR, PXRD, SC-XRD, and TG analysis. Compound 1 show a 1D double chain while compounds 2 and 3 form different 2D structural motif. [Display omitted] [ABSTRACT FROM AUTHOR]