Hydrothermal Syntheses and Crystal Structures of Three Zn(II) Coordination Compounds Constructed with 3,5-Pyrazoledicarboxylic Acid

作者：Liu Chun Bo; Liu Ling; Wang Shan Shan; Li Xiu Ying; Che Guang Bo^*; Zhao Han; Xu Zhan Lin

来源：Journal of Inorganic and Organometallic Polymers and Materials, 2012, 22(6): 1370-1376.

DOI：10.1007/s10904-012-9741-5

• 3,5-Pyrazoledicarboxylic acid
• Zinc(II)
• Crystal structure
• Photoluminescence

Three novel metal-organic coordination compounds, [Zn(Hdcp)(H2O)(4)]center dot 1.5H(2)O (1), [Zn(Hdcp)(H2O)(2)](a) (2) and [Zn-3(dcp)(2)(H2O)(5)](a) (3) with the ligand 3,5-pyrazoledicarboxylic acid were prepared by the hydrothermal method. The complexes were structurally characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction. Compound 1 is a mononuclear molecule that is linked into a 3D supramolecular framework via N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds. In 2, two types of carboxylic bridges were found between Zn-II ions to form a 1D double-chain. The 1D chains were further construct into a 3D structure by hydrogen bonds. Trinuclear 3 consists of 1D bi-infinite parallelogram chains of [Zn-3(dcp)(2)(H2O)(3)] trimers. In the basic trinuclear unit a further bridging mode of the ligand is seen where two dcp(3-) ligands chelate three Zn-II ions by utilizing five donors of the dcp(3-) ligand. The photoluminescent properties of 1, 2 and 3 were investigated.

• 出版日期2012-11
• 单位吉林师范大学