Two new compounds constructed from polyoxoanions, metal ions and organic ligands

• Published in: Inorganica Chimica Acta 2013-06, Vol.402, p.123-127
• Main Authors: Shi, Shu-Yun, Xu, Zhan-Lin, Teng, Hong-Hui, Zhao, Ling-Zi, Cui, Xiao-Bing, Xu, Ji-Qing
• Format: Article
• Language: English
• Subjects: Characterization; Hydrothermal synthesis; POMMOF compounds; Structure
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/j.ica.2013.03.031

Two new compounds, [Cu4(4,4′-bpy)4][SiW12O40]·6H2O (1) and [Cu2(4,4′-bpy)2][SiMo12O40]·(H24,4′-bpy) (2) (bpy=bipyridine), have been hydrothermally synthesized and characterized. Crystal diffraction analyses reveal that the two compounds represent two new examples of compounds constructed from polyoxoanions, metal ions and organic ligands. [Display omitted] •Two novel compounds constructed from Keggin polyanions, metal ions and organic ligands.•Compound 1 shows a 2-D framework structure presenting large pores viewed along the a axis.•Compound 2 exhibits a novel 1-D ladder-like structure. Two new compounds, namely [Cu4(4,4′-bpy)4][SiW12O40]·6H2O (1) and [Cu2(4,4′-bpy)2][SiMo12O40]·(H24,4′-bpy) (2) (bpy=bipyridine), have been hydrothermally synthesized and characterized by IR, UV–Vis, X-ray photoelectron spectroscopy (XPS), powder XRD, elemental analyses and single crystal X-ray diffraction. The two compounds represent new examples of compounds constructed from Keggin polyanions, metal ions and organic ligands. Compounds 1 and 2 both contains Cu(4,4′-bpy)nn+ infinite chains and [SiM12O40]4− anions (M=W for 1 and M=Mo for 2). However, the structures of compounds 1 and 2 are thoroughly different. The Cu(4,4′-bpy)nn+ infinite chains and [SiW12O40]4− anions in compound 1 are connected into a 2-D layered framework structure, and the Cu(4,4′-bpy)nn+ infinite chains and [SiMo12O40]4− anions in compound 2 are linked into a 1-D ladder-like structure.