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Chemical Research in Chinese Universities ›› 2006, Vol. 22 ›› Issue (1): 1-5.

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Structure of Metal Aluminophosphates:Al9-xMxP12O48(TREN)4·yNH4·zH2O[TREN=N(CH2CH2NH3)Hm, M=Mn, Co]

XU Yao-hua1,2, LI Yong-xiu3, FENG Shou-hua2, CHEN Xiao-feng1, JIN Hai-ying2, PANG Wen-qin2, DUAN Chun-ying1, YOU Xiao-zeng1   

  1. 1. Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P. R. China;
    2. College of Chemistry, Jilin University, Changchun 130023, P. R. China;
    3. Department of Chemistry, Nanchang University, Nanchang 330047, P. R. China
  • Received:2005-03-18 Online:2006-02-24 Published:2011-08-06
  • Supported by:

    Supported by the Youth Foundation of Jilin University, the Creative Foundation of Jilin University, the Project of Major Basic Research and Key Project of the National Natural Foundation of China.

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Abstract: Two large-pore metal-doped aluminophosphates, Mn4Al5(PO4)12[N(C2H4NH3)3]3[N(C2H4NH3)2·(C2H4NH2)](NH4)2·14H2O(Mn4-NJU) and Co4Al5(PO4)12[N(C2H4NH3)3][N(C2H4NH3)2(C2H4NH2)]3·(NH4)4·13H2O(Co4-NJU), which have the same open framework structures, were hydrothermally synthesized. The structures of these compounds consist of TO4 tetrahedra, which are linked together by corner-sharing to form an open framework with unique intersecting twelve-membered ring channels in three dimensions. The compounds crystallize in cubic space group I(-4)3m with a=1.6795(2) nm and V=4.7374(9) nm3 for Mn4-NJU, and a=1.67372(19) nm and V=4.6887(9) nm3 for Co4-NJU, respectively. Single crystal structure analyses show that the protruding O atoms of the frameworks of the compounds are linked to protonated 4-(2-aminoethyl)diethylenetriamine(TREN, C6H18N4) ions in the windows by means of hydrogen-bonding under the hydrothermal condition. It is also found that the components inside the super cages of the compounds are changeable, and the metal ions M2+(M=Mn, Co) and Al3+ disorderedly occupy the same crystallographic positions.

Key words: Phosphate, TREN, Transition metal, Aluminophosphates, Hydrothermal, Synthesis