The templating effect of 1,2-cyclohexanediamine configuration on iodoplumbate organic–inorganic hybrid structures

Abstract

Reactions of R, R-, cis- and trans-1,2-cyclohexanediamine with lead(II) iodide in concentrated HI aqueous solution afforded three organic–inorganic hybrid compounds, [(R, R-1,2-C₆H₁₆N₂)PbI₄] (1), [(cis-1,2-C₆H₁₆N₂)₂Pb₂I₈]·2H₂O (2) and [(trans-1,2-C₆H₁₆N₂)₂PbI₆]·2H₂O (3), respectively. Single-crystal X-ray diffraction revealed that the inorganic components in 1–3 are constructed with a 2-D monolayer perovskite sheet, a 1-D zigzag chain and only a concrete [PbI₆] octahedron which were caused by the different configurations of 1,2-cyclohexanediamine. In addition, 1–3 have been investigated by UV–vis, TG analysis and fluorescence spectra.

Graphical Abstract

Keywords:

• Organic–inorganic hybrid
• 1,2-cyclohexanediamine
• iodoplumbate
• geometric configuration

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

We thank the National Natural Science Foundation of China (nos. 21571094 and 21661021) and the Jiangxi Provincial Department of Science and Technology (no. 20161BAB203073) for financial support.