A CuBr Metal–Organic Framework: From Two Dimensional Net to Quasi-Three Dimensional Frame Through Encapsulated Cu2Br2 Cluster

摘要: A new metal–organic framework of [(CuBrL1)(CuBr)0.25] (1) [L1 = 1,3,5-tris(4′-pyridyloxadiazole)-2,4,6-triethylbenzene] has been synthesized and characterized by single crystal X-ray diffraction, elemental analysis, infrared spectroscopy, thermogravimetric analyses powder diffraction. As revealed the there exist one kind L1 ligand two kinds (CuBr)x units in complex 1. fully occupied CuBr monomer form a 3 × 3 two-dimensional wavelike net. Each 2D net is composed Cu-organic cycles, Cu4 with four Cu(I) centers Cu2 only two. The nets are packed into 3D frameworks through π–π interactions AB fashion. This structure feature can be attributed to flexibility tri-armed ligand. second unit ca. 1/4 Cu2Br2 dimer. From viewpoint host–guest chemistry, dimer seen as guest encapsulated cycle Br1–Cu2 coordination bond Br2–π interactions. 1 displays typical dual photo-luminescence solid which assigned fixed ligands clusters respectively. CCDC number 1958712.