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论文类型：期刊论文

发表时间：2014-11-01

发表刊物：EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

收录刊物：SCIE、Scopus

卷号：2014

期号：31

页面范围：5362-5369

ISSN号：1434-1948

关键字：Cobalt; Zinc; Polymers; N ligands; Zeolites; Thermal properties

摘要：Herein, we present two benzobisimidazole-based 3D open coordination framework structures. Single-crystal X-ray analyses reveal that the title compounds [Zn(H-2-BBIM)(SO4)]center dot DMSO (1) (H-2-BBIM = benzobisimidazole; DMSO = dimethyl sulfoxide) and [Co(H-2-BBIM)(SO4)(DMSO)(0.5)] (2) possess two different framework structures, although both of them have been synthesized under similar conditions. Compounds 1 and 2 exhibit cubic diamondoid and tetragonal CrB4 topological nets, respectively, in which the four-connected tetrahedral {MN2O2} (M-II = Zn, Co) coordination units are located at the vertices and the edges are occupied by H-2-BBIM ligands and sulfate anions. Only tetracoordination is observed in 1, whereas both tetra-and pentacoordination is present in 2. The phase purity of the compounds was ascertained by X-ray powder diffraction (XRPD) analysis, infrared spectroscopy, and elemental analysis. Variable-temperature XRPD analysis indicated that 1 and 2 are stable up to 90 and 140 degrees C, respectively.