A two-fold interpenetrating Pb(II) coordination compound: synthesis, crystal structure, and luminescence properties

Abstract

A novel lead coordination compound based on an extend viologen derivated ligand, [Pb₄(TTVTC)Cl₆(H₂O)₂] was successfully assembled under solvothermal condition and characterized. Single crystal structure study reveals that compound 1 is a 2D layer. Adjacent Pb²⁺ ions are doubly bridged by isophthalates and µ₂-Cl ions to form an infinite one dimensional (1D) ladder-like chain. The chains are further interlinked by the TTV moieties to generate a 2D layer. And hydrogen bond interaction based on C–H···Cl and C–H···O forms the supramolecular 3D structure. Additionally, Solid- state fluorescence shows that 1 emits pale green fluorescence, which can be assigned to the inter-ligand π*–π and/or π*–n transitions.

Keywords:

• Coordination compound
• extend viologen
• fluorescence

Additional information

Funding

We are thankful for the financial support from the NSFC (grant no. 21201069) and The Natural Science Foundation of Anhui Educational Bureau (grant no. KJ2020ZD006) and Innovation Team of Design and Application of Advanced Energetic Materials (grant no. KJ2015TD003).