期刊
CRYSTAL GROWTH & DESIGN
卷 10, 期 6, 页码 2650-2660出版社
AMER CHEMICAL SOC
DOI: 10.1021/cg100144p
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资金
- National Natural Science Foundation of China [20671071, 20971098]
- Program for New Century Excellent Talents in University [NCET-07-0613]
- Tianjin Normal University [52X09004]
- SRF for ROCS, SEM
A series of Cd-II Co-II, Ni-II, and Pb-II mixed-ligand coordination complexes 1-8 based on 5-sulfoisophthalic acid (H(3)sip) and the bent dipyridyl ligand 2,5-bis(3-pyridyl)-1,3,4-oxadiazole (3-bpo) or its 4-pyridyl N-donor analogue (4-bpo) have been synthesized and fully characterized by IR spectra, microanalyses, and single crystal and powder X-ray diffraction techniques. The significant pH effect on assembly of the Cd-II complexes 1-4 has been demonstrated, which leads to the formation of distinct crystalline products, whereas the Co-II, and Pb-II systems 5-8 are independent to pH condition of the synthetic reaction. Complexes 1-8 display various coordination motifs with different existing forms, conformations, and coordination modes of the organic ligands. Further, extended supramolecular networks are constructed via secondary interactions such as hydrogen-bonding and aromatic stacking. Solid-state properties of thermal stability and fluorescence for these crystalline materials are also presented.
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