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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 6
BKCSDE 33(6)
June 20, 2012 

One-Pot Synthesis, Crystal Structures and Thermal Properties of Two Three-Dimensional Cobalt(II) Complexes
Bo Tao, Wen Lei, Feiran Cheng, Hua Xia*
Cobalt (II) complexes, One-pot synthesis, Crystal structure, Thermal properties, Supramolecular
Two cobalt(II) compounds [Co(2,2'-bipy)(H2O)2(SO4)]n (1) and [Co2(2,2'-bipy)2(btec)(H2O)6]·2H2O (2) (2,2'- bipy = 2,2'-bipyridine, H4btec = 1,2,4,5-benzenetetracarboxylic acid), have been simultaneously synthesized by a one-pot slow solvent evaporation reaction. Their structures were determined by single-crystal X-ray diffraction and further characterized by X-ray powder diffraction (XRPD), IR, elemental and thermogravimetric analysis (TGA). The structural analysis reveals that compound 1 exhibits an infinite 1D chain structure with the octahedral Co(II) centers bridging by the tetrahedral μ2-SO4 2− ligands, while compound 2 possesses a dinuclear Co2(2,2'-bipy)2(btec)(H2O)6 unit and the two adjacent octahedral Co(II) ions are linked by the bismonodentately coordinated btec ligand. Additionally, compound 2 exhibits blue fluorescent emission in the solid state at room temperature.
1929 - 1933
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