A 3D chiral metal-organic framework based on left-handed helices containing 3-amino-1 H-1,2,4-triazole ligand

作者：Liu, Bing^*; Yang, Tian-Yi; Feng, Hui-Jun; Zhang, Zong-Hui; Xu, Ling

来源：Journal of Solid State Chemistry, 2015, 230: 90-94.

DOI：10.1016/j.jssc.2015.06.016

• 1,2,4-Triazole
• Metal-organic framework
• Crystal structure
• Chirality
• Topology

A chiral metal-organic framework, [Cu(atr)(OH)]center dot 0.5H(2)O center dot 0.5en (1) (Hatr=3-amino-1 H-1,2,4-triazole, en=ethylenediamine), was constructed via diffusion reaction of the achiral Hatr ligand and CuSO4 as starting materials. Compound 1 crystallizes in the chiral space group P3(2)21 and features a porous metalorganic framework with 44.1% solvent-accessible volume fabricated by left-handed helices with a pitch height of l(p)=10.442 angstrom. Six helices gather around in a cycle forming a large honeycomb channel with a 6.58 angstrom inner diameter. Cu(II) center and atr(-) ligand regarded as 3-connected nodes, compound 1 can be simplified to a 3-c uninodal {4.12(2)} (qtz-h) topological network. A gradual decreasing in the magnetic moment depending on temperature decreasing indicates an antiferromagnetic interaction in I. The powder XRD confirms the bulk sample is a single crystal pure phase, and the thermogravimetric analysis shows the thermal stability of 1 is up to ca. 240 degrees C.

• 出版日期2015-10
• 单位陕西科技大学; 陕西师范大学