Syntheses, structures, and luminescence of three 4-connected zinc coordination polymers with bis(1,2,4-triazol-1-yl)propane and benzenebiscarboxylate

Abstract

Three zinc(II) coordination polymers {[Zn(btp)(1,2-bdc)(H₂O)] · H₂O} _n (1), {[Zn(btp)(1,3-bdc)(H₂O)] · 1.5H₂O} _n (2), and {[Zn(btp)(NO₂-1,3-bdc)(H₂O)] · 2H₂O} _n (3) were synthesized by 1,3-bis(1,2,4-triazol-1-yl)propane (btp) and bis-carboxylate. Compound 1 is a thick 2-D network; 2 and 3 are undulated 2-D (4,4) networks. In 2 and 3, two adjacent networks interpenetrate to form a new 2-D double-layer network, which is sustained by hydrogen-bonding interactions. Compounds 1 and 2 reveal blue emission maximum at 351 and 403, respectively, in the solid state at room temperature.

Keywords:

• Coordination polymer
• 2-D network
• Zinc complex
• 1,3-Bis(1,2,4-triazol-1-yl)propane
• Benzenebiscarboxylate

Acknowledgments

This study was supported by the Natural Science Foundation of China (no. 20671066), the Jiangsu Province (no. BK2006049), and the Funds of Key Laboratory of Organic Synthesis of Jiangsu Province.