Abstract:
A novel 3D coordination polymer has been solvothermally synthesized using enantionpure ligand (
R)-4-(1-carboxyethoxy)benzoic acid ((
R)-H
2CBA) or (
S)-4-(1-carboxyethoxy) benzoic acid ((
S)-H
2CBA) to react with auxiliary N-donor ligand 1, 3, 5-tri (1H-imidazol-1-yl) benzene (TIB) and Cd(Ⅱ), namely, Cd(CBA)(TIB)·
xGuest (
1 , CCDC: 1896008). Crystallographic analysis indicates
1 is an achiral complex for some disordered atoms in CBA
2− ligand. In the complex
1 , the deprotonated CBA
2− ligands link the Cd centers to form a unique right-handed helical chain along the
c-axis. Meanwhile, another left-handed helical chain based on Cd(Ⅱ) and TIB ligands is also found along the
b-axis. As for complex
1 , an achiral framework was constructed by two kinds of absolute helical chains, which is a very rare phenomenon in the field of CPs. Furthermore, the IR, PXRD, thermostability and photoluminescent properties were also studied.