Zn[BPO4(OH)2]: a zinc borophosphate with the rare moganite-type topology |
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Authors: | Huang Ya-Xi Prots Yurii Kniep Rüdiger |
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Institution: | Max‐Planck‐Institut für Chemische Physik fester Stoffe, N?thnitzer Strasse 40, 01187 Dresden, Germany, Fax: (+49)?351‐4646‐3002 |
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Abstract: | A novel zinc borophosphate ZnBPO(4)(OH)(2)] with moganite-type topology (a rare polymorph of silica) has been prepared from a mixture of ZnO, B(2)O(3), and P(2)O(5) by hydrothermal treatment at 443 K. The crystal structure was determined from single-crystal X-ray data (orthorhombic, Pbcn (no. 60), a=915.07(3), b=897.22(3), c=1059.19(3) pm, V=869.62(5)x10(6) pm(3), Z=8, R1=0.028, wR2=0.075). The crystal structure comprises unbranched vierer-single borophosphate chains running along 010] and interconnected via ZnO(2)(OH)(2)-tetrahedra by sharing common vertices. The resulting topology of the three-dimensional tetrahedral framework structure is described by the Schl?fli symbol (4(2).6(2).8(2))(4.6(4).8)(2). Although showing Zn in a tetrahedral coordination, the title compound does not belong to the group of zincoborophosphates but is a special case of a borophosphate containing vierer single rings of tetrahedra with the sequence Zn-B-Zn-P. |
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Keywords: | borophosphate moganite‐type topology solid‐state chemistry tetrahedral framework zinc |
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