摘要
The compound K<sub>4</sub>[α-SiNiW<sub>11</sub>O<sub>38</sub>]·10H<sub>2</sub>O,Mr=3053.86,crystallizes in the orthorhombic, space group Pnn2 with cell dimensions a=14.203（8）,b=14.214（6）,c=12.460（3）,V=2515（2）,Z=2,Dc=4.03 g/cm￣3,λ（MoKα）=0.71069,μ=273.1 cm（-1）,F（000）=2672.The structure was solved by direct methods.The least-square refinement based on 1190 observed reflections[I】 6σ（I）] converged to a final R=0.076.The anion in the title compound is of α type Keggin structure,although the octahedron MO6 is greatly distorted. Atoms Ni and W are statistically distributed in the crystal.
The compound K<sub>4</sub>[α-SiNiW<sub>11</sub>O<sub>38</sub>]·10H<sub>2</sub>O,Mr=3053.86,crystallizes in the orthorhombic, space group Pnn2 with cell dimensions a=14.203（8）,b=14.214（6）,c=12.460（3）,V=2515（2）,Z=2,Dc=4.03 g/cm￣3,λ（MoKα）=0.71069,μ=273.1 cm（-1）,F（000）=2672.The structure was solved by direct methods.The least-square refinement based on 1190 observed reflections[I> 6σ（I）] converged to a final R=0.076.The anion in the title compound is of α type Keggin structure,although the octahedron MO6 is greatly distorted. Atoms Ni and W are statistically distributed in the crystal.
