Homochiral Zn^II–Camphorate Frameworks With 4′-p-tolyl-2,2′:6′,2″-Terpyridine and 1,10-Phenanthroline as Accessorial Ligands: Syntheses, Crystal Structures, and Properties

Abstract

The homochiral coordination polymers of zinc(II) with D-camphoric acid (D-H₂Cam) as bridges and 4′-p-tolyl-2,2′:6′,2″-terpyridine (ttpy) and 1,10-phenanthroline (phen) as accessorial terminal ligands, namely [Zn₂(D-Cam)₂(ttpy)₂]_n (I1) and [Zn₂(D-Cam)₂(phen)₂]_n (I2), have been synthesized and characterized by elemental analysis, IR, PXRD, and X-ray diffraction analysis. Both complexes have 1D homochiral coordination chains bridged by D-Cam. Interestingly, the coordination numbers of Zn^II ions, the coordination modes of D-Cam, and the crystal structures in I1 and I2 vary with the accessorial ligands ttpy and phen used. Additionally, compounds I1 and I2 have stronger fluorescence and higher thermostability, indicating their potential utility in photoluminescent materials.

Keywords:

• homochiral coordination polymer
• D-camphoric acid
• terpyridyl
• thermostability
• fluorescence

Supplementary Materials

Crystallographic data for the structural analysis have been deposited with the Cambridge Crystallographic Data Centre, 901495 for I1 and 901496 for I2. Copies of these information may be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_–request/cif.

Additional information

Funding

The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (20771094), and the Research Fund of State Key Laboratory of Structure Chemistry of China (20120008).