(IUCr) Crystallography Journals Online checkcif report

[Contents scheme]

Acta Cryst. (2003). E59, o756-o758 [ doi:10.1107/S1600536803008948 ]

(5aR,8aR,9R)-9-(3,4,5-Trimethoxyphenyl)-5a,6,8a,9-tetrahydrofuro[3',4':6,7]naphtho[2,3-d][1,3]dioxole-5,8-dione

J.-F. Shi and Y.-G. Wang

Online 9 May 2003

Key indicators

Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.004 Å
R factor = 0.033
wR factor = 0.112
Data-to-parameter ratio = 9.6

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level C:



ABSMU_01  Alert C The ratio of given/expected absorption coefficient lies       
          outside the range 0.99 <> 1.01                                        
          Calculated value of mu =     0.106                                    
          Value of mu given      =     0.110                                    

General Notes



REFLT_03                                                                        
         From the CIF: _diffrn_reflns_theta_max           27.50                 
         From the CIF: _reflns_number_total               2610                  
         Count of symmetry unique reflns         2621                           
         Completeness (_total/calc)             99.58%                          
         TEST3: Check Friedels for noncentro structure                          
         Estimate of Friedel pairs measured         0                           
         Fraction of Friedel pairs measured     0.000                           
         Are heavy atom types Z>Si present           no                         
          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.          


 0 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 1 Alert Level C = Please check