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一种新的含有低价态钼磷酸盐{P_4Mo_6~V}建筑单元超分子化合物的溶剂热合成和晶体结构 被引量:1

Hydrothermal synthesis and crystal structure of a new reduced molybdenum phosphate{P_4Mo^6~V}based supermolecular compound
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摘要 通过水热合成法合成了一个新的夹心型钼磷酸基"三明治"状有机-无机杂化化合物[C3N2H5]2[C7NH10]2{Mn[Mo6O12(OH)3(PO4)(H2PO4)3]2}[C5NH5]4·2H2O(化合物1),并对其进行元素分析、红外光谱、热重分析和X射线单晶衍射表征。单晶结构解析表明,该化合物属于正交晶系,Pbca空间群,晶胞参数a=1.697 74(17)nm,b=2.043 8(2)nm,c=2.504 7(3)nm,α=90°,β=90°,γ=90°,V=8.690 8(15)nm3,Z=4。化合物1中的夹心结构阴离子是由2个{Mn[Mo6O12(OH)3(PO4)(H2PO4)3]2}建筑单元通过1个八面体配位的金属Mn2+离子键连形成。化合物[C3N2H5]2[C7NH10]2{Mn[Mo6O12(OH)3(PO4)(H2PO4)3]2}[C5NH5]4·2H2O中,具有夹心结构的Mn(P4Mo6)2与质子化的咪唑、N-乙基吡啶、吡啶及水分子通过氢键连接形成超分子化合物。室温固态荧光光谱分析表明,该化合物在437nm处具有较强的荧光发射。化合物1的合成表明溶剂在多金属氧酸盐的合成中起到了重要的作用。 One novel molybdenum phosphate based inorganic-organic hybrid compound, [ Ca N2 H10 ]2 Ca NH0 ]2 { Mn No6012 (OH) a (PO4) (H2 PO4 ) a ]e } [Cs NH514 2 He O (compound 1) has been hydrothermally synthesized and characterized by elemental analysis, infrared spectroscopy, thermogravimetrie analysis and single crystal X-ray diffraction. ?(ray single crystal analysis re- veals that compound 1 belongs to orthorhombic system, with Pbca space group and cell parameters a= 1. 697 74(17) nm, b = 2. 043 8(2) nm, c=2. 504 7(3) nm, a=90 °B=90 °, y=90 °, V=8. 690 8(15) nma , Z=4. The sandwich-shaped anion {Mn [ Mo6 O12 (OH)a (PO4) ( Hz PO4 )a 12 }4- is composed of two { P4 Mo6 } units that are covalently linked via one octahedrally-coordina ted Mn2+ ion. The { Mn[Mo6 O12 (OH)3 (PO4) (H2 PO4 )a ]2 }4- is further linked with hydrogen bonds of protonated imidazole, N- ethylpyridine, pyridine and water to construct a 3D supramolecular network. Simultaneously, the luminescent property of com- pound 1 has been explored. The synthesis of compound 1 shows that the solvent plays an important role in the synthesis of poly- oxometalates.
出处 《中国科技论文》 CAS 北大核心 2013年第12期1204-1208,共5页 China Sciencepaper
基金 黑龙江省教育厅科学技术研究项目(12511348) 高等学校博士学科点专项科研基金资助项目(20103221120002)
关键词 夹心型磷钼酸盐 多金属氧酸盐 水热合成 超分子 sandwich-shaped molybdenum phosphate polyoxometalates hydrothermal synthesis supramolecule
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参考文献12

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