Assemblies of Two New Metal−Organic Frameworks Constructed from Cd(II) with 2,2‘-Bipyrimidine and Cyclic Oxocarbon Dianions CnOn2- (n = 4, 5)
| Autor: | † Chen-Tsung Kuo, Chih-Chieh Wang, Gene-Hsiang Lee, † Jing-Chun Yang, Hwo-Shuenn Sheu, and Wei-Ju Shih |
|---|---|
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Crystal Growth & Design. 7:1476-1482 |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/cg070189r |
| Popis: | Two extended networks of Cd(II) with 2,2‘-bipyrimidine (bpym) and cyclic oxocarbon dianions CnOn2- (n = 4, 5) with formulas [Cd(C4O4)(bpym)0.5(H2O)] (1) and [Cd(C5O5)(bpym)0.5(H2O)] (2) have been synthesized and characterized by single-crystal X-ray diffraction studies. Structural determination reveals that, in compounds 1, each Cd center lies in a seven-coordinate environment bonded to two bpym nitrogen atoms and five oxygen donors from four squarate and one water molecules. The squarate acts as a bridging ligand with two different binding modes, a tetramonodentate (μ4) and a bis-bridging (μ4) coordination mode, linking the Cd(II) ions to form a two-dimensional (2D) metal−squarate layer. Adjacent layers are then mutually linked via bridges of bis-bidentate bpym ligands constructing a three-dimensional (3D) triangular metal−organic framework (MOF). In compound 2, each Cd center lies in an eight-coordinate environment bonded to two bpym nitrogen atoms and six oxygen donors from three croconate ligands and ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|