Synthesis, Characterization, and X-Ray Crystal Structure of a New 2D Cu(II) Complex with a Novel 4,4′ -Diazenediyldiphthalic Acid

Abstract

An exploration of the cadmium-L system under hydrothermal condition has led to the isolation of a novel framework [Cu₂(L)(H₂O)₂]· 2H₂O _n (H₄L = 4,4′ -diazenediyldiphthalic acid). Single-crystal X-ray analyses reveal that it crystallizes in the monoclinic space group P2 ₁ /c. a = 17.182(7) Å,b = 6.677(3) Å,c = 8.095(4) Å, β = 90.247(7). The Cu ^II ions are linked into an extended 2-D rectangle-like structure via L ligands, which represents an attractive four-connected gear topological network.

Keywords:

• Cu complex
• crystal structure
• porous framework
• topology

The authors are grateful to the Weinan Teachers University for financial support.

Notes

∗Symmetrical codes: #1: x, 1 + y, z; #2: x, 3/2 − y, ½ + z.