Two compounds, namely [Cd（HINA）2（μ2-H2O）（H2O）2]2[SiW1240].6H2O （1） and [Co（HINA）3（HzO）3]- [Co（HINA）2（H2O）4][SiW12O40]·2H2O （2）, have been synthesized from the aqueous mixture containing H4SiW12...Two compounds, namely [Cd（HINA）2（μ2-H2O）（H2O）2]2[SiW1240].6H2O （1） and [Co（HINA）3（HzO）3]- [Co（HINA）2（H2O）4][SiW12O40]·2H2O （2）, have been synthesized from the aqueous mixture containing H4SiW12040, isonicotinic acid （HINA）, and M（CH3COO）2 （M=Cd and Co）. The compounds have been characterized by ele- mental analysis, IR spectroscopy, TG analysis, and single-crystal X-ray diffraction. The dinuclear coordinated cad- mium units in compound 1 are linked to form 2D layer parallel to ab plane through n-n interactions and hydrogen bonds. Compound 2 contains two different types of coordinated metal cations, [Co（HINA）3（HaO）3]2＋ and [Co（HINA）2（H2O）4]2＋, which construct 2D layer along be plane through π-π interactions and hydrogen bonds. In both compounds, the Keggin anions are located inside the channels and cavities formed from stack of the coordi- nated metal cations, which further achieve the 3D supramolecular structure through hydrogen bonds. The lumines- cent property of compounds 1 and 2 has been investigated.展开更多
文摘Two compounds, namely [Cd（HINA）2（μ2-H2O）（H2O）2]2[SiW1240].6H2O （1） and [Co（HINA）3（HzO）3]- [Co（HINA）2（H2O）4][SiW12O40]·2H2O （2）, have been synthesized from the aqueous mixture containing H4SiW12040, isonicotinic acid （HINA）, and M（CH3COO）2 （M=Cd and Co）. The compounds have been characterized by ele- mental analysis, IR spectroscopy, TG analysis, and single-crystal X-ray diffraction. The dinuclear coordinated cad- mium units in compound 1 are linked to form 2D layer parallel to ab plane through n-n interactions and hydrogen bonds. Compound 2 contains two different types of coordinated metal cations, [Co（HINA）3（HaO）3]2＋ and [Co（HINA）2（H2O）4]2＋, which construct 2D layer along be plane through π-π interactions and hydrogen bonds. In both compounds, the Keggin anions are located inside the channels and cavities formed from stack of the coordi- nated metal cations, which further achieve the 3D supramolecular structure through hydrogen bonds. The lumines- cent property of compounds 1 and 2 has been investigated.
