Syntheses, Crystal Structures, and Fluorescent Properties of Two Mixed-Ligand Cadmium Coordination Polymers Based on Dicarboxylate and Bis-benzimidazole Ligands

N-Ligands mediated Co(Ⅱ) coordination polymer incorporating 5-hydroxyisophthalic acid: Syntheses, structures, and theoretical calculations

“…The strong and wide peak at 3431 cm -1 was observed, which is characteristic of the stretching vibrations of N-H bond of ligand L. The strong peaks at 1404 and 1611 cm -1 could be ascribed to the asymmetric and symmetric vibrations of carboxylate groups of the hip 2-anions. The separations between νas(COO − ) and νs(COO − ) are 207 cm −1 for 1, respectively [27]. The C-N and C=N stretching vibrations of ligand L were observed at 1137 and 1440 cm -1 .…”