Crystallography Open Database

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Searching space group like 'C 2 2 21 (a,b,c+1/4)'

COD ID: 9017293
CIF file Formula: - O2 Si -
Comments: Dollase, W. A. The crystal structure at 220 C of orthothombic high tridymite from the Steinbach meteorite Note: T = 220 C Acta Crystallographica 23 (1967) 617-623
Space group: C 2 2 21 (a,b,c+1/4)
Cell volume: 362.969
Cell parameters: 8.74; 5.04; 8.24; 90; 90; 90;  

COD ID: 9017371
CIF file Formula: - O2 Si -
Comments: Kihara, K.; Matsumoto, T.; Imamura, M. Structural change of orthorhombic-I tridymite with temperature: A study based on second-order thermal-vibrational parameters Note: Dollase's model, T = 733 K Zeitschrift fur Kristallographie 177 (1986) 27-38
Space group: C 2 2 21 (a,b,c+1/4)
Cell volume: 362.969
Cell parameters: 8.74; 5.04; 8.24; 90; 90; 90;  


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