Synthesis, Crystal Structure and Luminescence Properties of a New Cd(II) Complex Based on 5-Methylisophthalic Acid and 1,3-Bis(1,2,4-triazole)propane

Abstract

A new complex, [Cd₂(mip)₂(1,3-btp)(H₂O)₂]_n [H₂mip = 5-methylisophthalic acid; 1,3-btp = 1,3-bis(1,2,4-triazole)propane], has been obtained by hydrothermal reaction of Cd(II) acetate, H₂mip and 1,3-btp ligands. Its crystal structure was characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. The X-ray crystal structure shows that the complex belongs to the triclinic system, P space group, a = 10.1350(11) Å, b = 12.1708(13) Å, c = 12.7495(14) Å, and α = 99.3140(10) °, β = 91.0330(10) °, γ = 113.2160(10) °. The dinuclear Cd(II) units are bridged by mip²⁻ ligands to form a 1D chain and then these 1D chains are further bridged by 1,3-btp co-ligands to form a 2D layer. Adjacent 2D layers are linked by weak hydrogen bonding interactions to form a 2D double layer. In addition, the thermal behavior and luminescence properties of the title complex were investigated.

Keywords:

• 5-methylisophthalic acid
• 1,3-bis(1,2,4-triazole)propane
• luminescent properties

Acknowledgments

This work was supported by the National Natural Science Foundation of China (21073082), Supported by Program for New Century Excellent Talents in University, and sponsored by Program for Science & Technology Innovation Talents in Universities of Henan Province (2011HASTIT027).