Acta Cryst. (2002). E58, o927-o928  [ doi:10.1107/S1600536802012916 ]

Redetermination of silicon(IV) acetate

L. Wicke, E. Alig, H.-W. Lerner and M. Bolte

Key indicators

• Single-crystal X-ray study
• T = 173 K
• Mean (C-C) = 0.001 Å
• R factor = 0.023
• wR factor = 0.063
• Data-to-parameter ratio = 27.3

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level A:



DIFF_019  Alert A _diffrn_standards_number is missing                           
          Number of standards used in measurement.                              

DIFF_020  Alert A _diffrn_standards_interval_count and                          
          _diffrn_standards_interval_time are missing. Number of measurements   
          between standards or time (min) between standards.                    

DIFF_022  Alert A _diffrn_standards_decay_% is missing                          
          Percentage decrease in standards intensity.                           

 Alert Level B:



ABSTM_02  Alert B The ratio of expected to reported Tmax/Tmin(RR') is < 0.75    
          Tmin and Tmax reported:      0.659     0.952                          
          Tmin' and Tmax expected:      0.897     0.952                         
          RR' =      0.735                                                      
          Please check that your absorption correction is appropriate.          

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           32.74                 
         From the CIF: _reflns_number_total               1091                  
         Count of symmetry unique reflns          650                           
         Completeness (_total/calc)            167.85%                          
         TEST3: Check Friedels for noncentro structure                          
         Estimate of Friedel pairs measured       441                           
         Fraction of Friedel pairs measured     0.678                           
         Are heavy atom types Z>Si present          yes                         
          Please check that the estimate of the number of Friedel pairs is      
          correct. If it is not, please give the correct count in the           
          _publ_section_exptl_refinement section of the submitted CIF.          


 3 Alert Level A = Potentially serious problem

 1 Alert Level B = Potential problem

 0 Alert Level C = Please check

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