An unprecedented seven-connected coordination network based on octanuclear supertetrahedral lead(II) cluster as a secondary building unit

作者：Cheng, Shaomin; Dong, Baoxia; Wang, Xiangfei; Yang, Fang; Tang, Meng; Chen, Hang; Yuan, Limin; Liu, Wenlong^*

来源：Inorganic Chemistry Communications, 2014, 46: 244-247.

DOI：10.1016/j.inoche.2014.06.015

• Lead(II) coordination polymer
• Octanuclear lead(II) secondary building unit
• 7-Connected net
• Photoluminescence

A novel two-dimensional (2D) lead(II) coordination polymer, {[(Me2NH2)(4)[Pb-8(mu(4)-O)(1,2,3-btc)(6)]](2)center dot 6DMF center dot 2H(2)O}(n) (1) (1,2,3-H(3)btc = benzene-1,2,3-tricarboxylic acid; DMF = N,N-dimethylformamide; Me2NH2+ = the countercationic dimethylammonium ion, generated in situ via the hydrolysis of the solvent DMF), was synthesized solvothermally and fully characterized by single crystal X-ray diffraction, thermogravimetry and solid-state luminescence analysis. Structural analysis reveals that complex 1 contains an unusual octanudear tetrahedron @ tetrahedron lead(II) secondary building units (SBUs) [Pb-8(mu(4)-O)(O2C)(18)] and is extended topologically into a rare uninodal 7-connected framework structure. At room temperature, I in the solid-state exhibits strong emission peak at 495 nm originated from ligand to metal charge transfer (LMCT) between delocalized is bonds of carboxylate groups and p orbitals of lead(II) centers.

• 出版日期2014-8
• 单位扬州大学