Chem. J. Chinese Universities ›› 1991, Vol. 12 ›› Issue (8): 1009.

• Articles • Previous Articles     Next Articles

Crystal Structure of α-K3H4[SiW9Al3(H2O)3O37]·7H2O

Qu Lun-yu1, Chen Ya-guang1, Peng Jun1, Lin Yong-hua2, Yu Zuo-long2   

  1. 1. Department Chemistry, Northeast Normal University, Changchun, 130024;
    2. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1990-05-21 Online:1991-08-24 Published:1991-08-24

Abstract: The title complex was obtained from α-SiW9. The crystal structure determination shows that the complex crystallizes in the monoclinic space group P21/α with α= 1. 0996 nm, b=3. 9181nm, c=1. 1987 nm, β= 114. 30°, Dc= 3. 60 g/cm3, Z=4, the final R= 0.081, and the SiW9O34in the complex is A-αa-type tri-lacuna heteropoly anion. Three Al atoms fill into the lacunas linking each other by sharing a corner of the octahedra AlO5(H2O) and with three W2O10by sharing a edge of octahedra, completing a pseudo-Keggin unit. K+ions and crystal water molecules lie in between the anions.

Key words: Potassium aluminotungstosilicate, Trisubstituted heteropoly complex, Crystal structure, Isomer

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