Self-Assembly of Three-Dimensional Copper(II) Macrocyclic Complex with 2,5-Pyridinedicarboxylate Linked by Hydrogen Bond

Synthesis, crystal structure, spectroscopic and thermal characterization of (Hampy)2[Ni(pydc)2(H2O)2] · 2 H2O

“…In high energy bands, ranging from 3500 to 2700 cm -1 there are three absorption bands at 3415, 3334 and 3080 cm -1 , due to n(OH) of coordination water molecules and free water molecules, respectively [2,3,16]. The strong and broad absorption band at 3162 cm -1 are attributed to the n(NH) vibrations of 2-amino-3-methylpyridine in 1 [17]. The absorption band at 1624 cm -1 is due to n(C¼C) þ n(C¼N) vibration of pyridinedicarboxylato and ampy ligands.…”