Eight Zn(II) and Cd(II) complexes based on the aromatic C-centered triangular multicarboxylate and N-donor mixed ligands

摘要

Eight new Zn(II) and Cd(II) complexes based on the aromatic multicarboxylate and N-donor mixed ligands, namely Zn-2(TCOPM)(2,2'-bipy)(OH)center dot 1.25DMF (TCOPM = tris(p-carboxyphenyl)methane; 2,2'-bipy = 2,2'-bipyridine; DMF = N,N'-dimethylformamide) (1), Zn-2(alpha(OH)-TCOPM)(phen)(OH)center dot DMF (alpha(OH)-TCOPM = tris(p-carboxyphenyl)methanol; phen = 1,10-phenanthroline) (2), Zn-2(alpha(OH)-TCOPM)(tpy)(OH)(H2O) (tpy = 2,2':6',2 ''-terpyridine) (3), Zn-3(alpha(OH)-TCOPM)(2)(dpe)center dot 2H(2)O (dpe = 4,4'-vinylenedipyridine) (4), Cd-3(TCOPM)(2)(DMF)(2)(H2O)(2) (5), Cd-3(TCOPM)(2)(4,4'-bipy) (6), Cd-3(TCOPM)(2)(dpe) (7), and Cd-3(alpha(OH)-TCOPM) 2(2,2'-bipy)(2)center dot 2DMF (8) were synthesized through a solvothermal reaction. The aOH-TCOPM ligand is generated in situ by the nucleophilic addition of the TCOPM ligand. X-ray crystallographic analysis reveals that complexes 1-3, 5, and 8 exhibit a two-dimensional (2D) layered structure, while 4, 6, and 7 possess a 3D open framework. The coordination mode of TCOPM and the type of N-donors ligands have obvious effects on the final structures. The luminescence properties in the solid state of 1-4, 7, and 8 were also investigated.